STMicroelectronics Stereo audio amplifier system Datasheet
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TS4956
Stereo audio amplifier system with I
2
C bus interface
Features
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Operating from V
CC
= 2.7 V to 5.5 V
I
2
C bus control interface
38 mW output power at V
CC
= 3.3 V,
THD = 1%, F = 1 kHz, with 16 Ω load
Ultra low consumption in standby mode: 0.5 µA
Digital volume control range from +12 dB to
-34 dB
32-step digital volume control
Stereo loudspeaker option by I
2
C
8 different output mode selections
Pop and click reduction circuitry
Flip-chip package, 18 bumps with 300 µm diameter
Lead-free flip chip package
Output power limitation on headphone for eardrum damage consideration
Applications
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Mobile phones (cellular/cordless)
PDAs
Laptop / notebook computers
Portable audio devices
Description
TS4956 - flip-chip 18
Pin connections (top view) headphone, one loudspeaker drive and one mono line for a hands-free set. The stereo headphone is capable of delivering more than 25 mW per channel of continuous average power into 16 Ω single-ended loads with 0.3% THD+N from a 5 V power supply. The device functions are controlled via an I
2
C bus, which minimizes the number of external components needed.
The overall gain and the different output modes of the TS4956 are controlled digitally by the control registers which are programmed via the I²C interface. It has also an internal thermal shutdown protection mechanism.
March 2009 Rev 4 1/55 www.st.com
55
Contents
Contents
TS4956
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4
Typical application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
C interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Gain and mode setting operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Single-ended output configuration (modes 5 and 6) . . . . . . . . . . . . . . . 38
Phantom ground output configuration (modes 3 and 4) . . . . . . . . . . . . . 38
BTL output configuration (modes 1, 2, 7) . . . . . . . . . . . . . . . . . . . . . . . 39
Power limitation in the phantom ground configuration . . . . . . . . . . . . . . . 39
Power dissipation and efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Single-ended output configuration (modes 5 and 6) . . . . . . . . . . . . . . . 40
Phantom ground output configuration (modes 3, 4): . . . . . . . . . . . . . . . 41
BTL output configuration (modes 1, 2, 7) . . . . . . . . . . . . . . . . . . . . . . . 42
Low frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Single-ended input configuration in modes 1, 3 and 5 . . . . . . . . . . . . . . . 45
PSRR measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
How is PSRR measured? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Pop and click performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
2/55
TS4956
Contents
18-bump flip-chip package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Obsolete Product(s) - Obsolete Product(s)
3/55
Absolute maximum ratings and operating conditions
1
TS4956
Absolute maximum ratings and operating conditions
Table 1.
Absolute maximum ratings
Symbol Parameter
V
CC
V i
T oper
T stg
T j
R thja
P diss
Supply voltage
Input voltage
(2)
(1)
Operating free air temperature range
Storage temperature
Maximum junction temperature
Thermal resistance junction to ambient
Power dissipation
Susceptibility - human body model
(5)
ESD
Susceptibility - machine model
Latch-up Latch-up immunity
(3)
Lead temperature (soldering, 10sec)
Value
6
G
ND
to V
CC
-40 to + 85
-65 to +150
150
200
Internally limited
(4)
2
150
200
260
Unit
V
V
°C
°C
°C
°C/W kV
V mA
°C
1.
All voltage values are measured with respect to the ground pin.
2.
The magnitude of input signal must never exceed V
CC
+ 0.3 V / GND - 0.3 V
3.
Device is protected in case of over temperature by a thermal shutdown activated at 150°C.
4.
Exceeding the power derating curves during a long period may involve abnormal operating conditions.
5.
Human body model, 100 pF discharged through a 1.5 k
Ω
resistor, into pin to V
CC
device
Table 2.
Operating conditions
Parameter Value Unit Symbol
V
CC
(1)
R
L
C
L
Supply voltage
Load resistor
Speaker/BTL output (modes 1,2,7)
Headphone, MLO output (modes 3,4,5,6,)
Load capacitor
R
L
R
L
= 8 Ω to 100 Ω ( speaker/BTL output - modes 1,2,7)
= 16 Ω to 100 Ω (headphone, MLO output - modes
3,4,5,6)
R
L
> 100
Ω
Flip-chip thermal resistance junction to ambient
2.7 to 5.5 V
≥ 8
≥ 16
500
400
100
90
(2)
V
Ω pF
°C/W R thja
1.
For proper functionality of I2C bus, V
CC
pins must not be grounded. ESD protection diodes ground data and clock wires and cause dysfunction of I
2
C bus in this condition.
2.
With heat sink surface 120 mm
2
.
Obsolete Product(s) - Obsolete Product(s)
Symbol Parameter Value Unit
I2C supply voltage
(1)
I
2
CV
CC
V
ILl
V
IH
I
IN
F
SCL
V ol
Maximum low level input voltage on pins SDA, SCL
Minimum high level input voltage
Maximum input current (pins SDA, SCL), 0.4 V < V in
< 4.5 V
SCL maximum clock frequency
Max low level output voltage, SDA pin, I sink
= 3 mA
2.7 to 5.5 V
0.3 I2CVCC
0.7 I2CVCC
10
400
0.4
V
V
V
µA kHz
V
1.
Must be less than or equal to the power supply voltage V
CC
of the device.
4/55
TS4956
2 Typical application schematic
Typical application schematic
Table 4.
Description of external components
Components Functional description
C s1
, C s2
C b
C in1
to C in4
C out
R
1
Supply bypass capacitors which provide power supply filtering.
Bypass capacitor which provides half-supply filtering.
Input capacitors which form together with input impedance Z in
first-order high pass filter to block DC voltage on inputs
Output capacitor which forms with output load R
L first-order high pass filter to block half-supply voltage on single-ended output.
Resistor to keep C out
charged for better pop performance on single-ended output.
Figure 1.
Typical application for the TS4956 (modes 1, 2, 3, 4, 5 and 6)
Vcc
C s 1
1 µ F
C s 2
100nF
Diff. inp u t +
Cin1
+
33 0nF
Diff. inp u t -
Cin2
+
33 0nF
S E inp u t left
Cin 3
+
33 0nF
T S 4956
A1
MIP S tereo
Inp u t Left
A2 MIN
S tereo
Inp u t Right
B4
LIN S tereo
Inp u t Left
S E inp u t right
Cin4
+
33 0nF
A5
RIN
S tereo
Inp u t Right
BYPA SS I2CVCC
C b
1 µ F
I2CVCC
S CL
S DA
I2C BU S
Mode
S elect
I2C
LHP Amplifier
LHP
B6
MODE 3 : Gx(MIP+MIN)
MODE4: GxLIN
16/ 3 2 Ohm s
PHG Amplifier
PHG
RHP Amplifier
RHP
S pe a ker Amplifier
S RP+
MLO Amplifier
S RN-
MLO
A7
D6
MODE 3 : Gx(MIP+MIN)
MODE4: GxRIN
16/ 3 2 Ohm s
B2
MODE1: Gx(MIP+MIN)
MODE2: Gx(LIN+RIN)
8 Ohm s
D2
E7
MODE5: Gx(MIP+MIN)
MODE6: Gx(LIN + RIN)
Co u t
+
220 µ F
R1
1k
16/ 3 2 Ohm s
Digit a l vol u me
5/55
Typical application schematic
Figure 2.
Typical application for the TS4956 (mode 7)
Vcc
C s 1
1 µ F
C s 2
100nF
TS4956
T S 4956
A1 MIP S tereo
Inp u t Left
A2 MIN
S tereo
Inp u t Right
S E inp u t left
Cin 3
+
33 0nF
B4
LIN S tereo
Inp u t Left
S E inp u t right
Cin4
+
33 0nF
A5
RIN
S tereo
Inp u t Right
Bi as
BYPA SS I2CVCC
I2C
C b
1 µ F
I2CVCC
S CL
S DA
I2C BU S
Mode
S elect
LHP Amplifier
LHP B6
PHG Amplifier
PHG A7
RHP Amplifier
RHP
S pe a ker Amplifier
S RP+
MLO Amplifier
S RN-
MLO
D6
B2
D2
E7
MODE7: BTL - GxRIN
8 Ohm s
MODE7: GxLIN
8 Ohm s
Digit a l vol u me control
Obsolete Product(s) - Obsolete Product(s)
6/55
TS4956 Typical application schematic
2.1 I
2
C interface
The TS4956 uses a serial bus, which conforms to the I
2
C protocol (the TS4956 must be powered when it is connected to the I
2
C bus), to control the chip’s functions via two wires: clock and data.
The clock and data lines are bidirectional (open-collector) with an external chip pull-up resistor (typically 10 k Ω ). The maximum clock frequency in fast-mode specified by the I
2
C standard is 400 kHz, and this frequency is supported by the TS4956. In this application, the
TS4956 is always the slave device and the controlling MCU is the master device.
The I2CVCC pin determines the power supply of the TS4956’s I
2
C interface. The voltage connected to this pin must be equal to or less than the TS4956 power supply voltage V
CC
.
The minimum value of the I2CVCC voltage is 2.7 V.
When the I2CVCC pin is connected to an I
2
C voltage, the TS4956 is ready to communicate via the I
2
C bus.
When the I2CVCC pin is connected to the ground, the TS4956 is in total standby mode, with an ultra-low standby current on the order of a few nanoamperes. In this condition the
TS4956 cannot receive I
2
C commands from the I
2
C bus.
In both cases, pins SDA and SCL must respect logic HI or logic LOW thresholds (not
floating) presented in Table 3 on page 4 , in order for the circuit to function properly.
Table 5 summarizes the pin descriptions for the I²C bus interface.
Table 5.
SDA
SCL
I2CVCC
I²C bus interface: pin descriptions
Pin Functional description
Serial data pin
Clock input pin
I
2
C interface power supply
The host MCU can write into the TS4946 control register to control the TS4956 and read from the control register to get the current configuration of the TS4956. The TS4956 is addressed by a single byte consisting of a 7-bit slave address and an R/W bit. The TS4956 control register address is $5Dh.
Table 6.
First byte after the START message for addressing the device
A6
1
A5
0
A4
1
A3
1
A2
1
A1
0
A0
1
Rw
X
●
●
In order to write data into the TS4956 control register, after the "start" message the MCU must send the following data: send byte with the I²C 7-bit slave address and with the R/W bit set low.
send the data (control register setting).
All bytes are sent with the MSB bit first. The transfer of written data ends with a "stop" message. When transmitting several bits of data, the data can be written without having to repeat the "start" message or address byte with the slave address.
7/55
Typical application schematic TS4956
●
●
In order to read data from the TS4956, after the "start" message, the MCU must send and receive the following data: send byte with the I²C 7-bit slave address and with the R/W bit set high.
receive the data (control register value).
All bytes are read with the MSB bit first. The transfer of read data is ended with a "stop" message. When transmitting several bits of data, the data can be read with having to repeat the "start" message and the byte with slave address. In this case the value of the control register is read repeatedly.
Figure 3.
I²C read/write operation
S 1 0 1 1 1 0 0 A
Output
Mode settings
A P
Table 7.
Output mode selection: G from -34.5 dB to + 12 dB (by steps of 1.5 dB)
Output mode # RHP LHP Speaker P/N Mono L/O
(1)
6
7
4
5
2
3
0
1
SD
SD
SD
GX (MIP + MIN)
G x RIN
SD
SD
BTL: G x RIN
SD
SD
SD
GX (MIP + MIN)
G x LIN
SD
SD
BTL: G x RIN
SD
Gx (MIP + MIN)
GX (RIN + LIN)
SD
SD
SD
SD
G x LIN
SD
SD
SD
SD
SD
GX (MIP + MIN)
GX (RIN + LIN)
SD
1.
SD = shutdown mode
G = audio gain
MIP = mono input positive
MIN = mono input negative
RIN = stereo input right
LIN = stereo input left Obsolete Product(s) - Obsolete Product(s)
8/55
TS4956
2.1.2
Typical application schematic
Gain and mode setting operations
The gain of the TS4956 ranges from -34.5 dB to +12 dB. At power-up, the output channels are set to standby mode.
Table 8.
Gain settings truth table
G: Gain (dB) # D7 (MSB) D6
-21
-19.5
-18
-16.5
-15
-13.5
-12
-10.5
-34.5
-33
-31.5
-30
-28.5
-27
-25.5
-24
-22.5
-9
-7.5
-6
-4.5
-3
-1.5
0
+1.5
+3
+4.5
+7.5
+9
+10.5
+12
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
1
0
0
0
0
0
0
1
0
1
1
1
1
1
1
0
0
0
0
1
0
0
0
0
D5
1
1
1
0
1
0
0
1
0
1
1
0
1
0
0
1
0
1
1
0
1
0
0
1
1
1
1
0
0
0
0
0
D4
0
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
0
0
1
1
0
0
D3
1
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
1
0
1
0
0
1
0
1
9/55
Typical application schematic
Table 9.
Output mode settings truth table
D2 D1 D0
1
1
0
1
1
0
0
0
0
1
1
0
1
0
0
1
1
0
1
0
1
0
1
0
Comments
OUTPUT MODE 0
OUTPUT MODE 1
OUTPUT MODE 2
OUTPUT MODE3
OUTPUT MODE 4
OUTPUT MODE 5
OUTPUT MODE 6
OUTPUT MODE 7
TS4956
The number of data bytes transferred between the start and the stop conditions from the
CPU master to the TS4956 slave is unlimited. Each byte of eight bits is followed by one acknowledge bit.
The addressed TS4956 generates an acknowledge after receiving each byte that has been clocked out.
Obsolete Product(s) - Obsolete Product(s)
10/55
TS4956 Electrical characteristics
Table 10.
V
CC
= +2.7 V, GND = 0 V, T amb
= 25° C (unless otherwise specified)
Symbol Parameter Conditions Min.
Typ.
Max.
Unit
I
CC
I
STBY
V
OO
P out
THD+N
Supply current
Mode 1, 2, no input signal, no load
Mode 3, no input signal, no load
Mode 4, no input signal, no load
3.4
4.6
4.4
4.4
6
5.7
Mode 5, 6, no input signal, no load
Mode 7, no input signal, no load
Standby current No input signal
Output offset voltage
Headphone output power
(phantom ground mode)
BTL, speaker output power
No input signal
Modes 1, 2 speaker output, RL = 8 Ω
Mode 3 headphone outputs, RL = 16
Ω
Mode 4 headphone outputs, RL = 16
Ω
Mode 7
BTL, speaker output, R
L
= 8
Ω
Modes 3, 4
THD+N = 1% max, F = 1 kHz, R
L
THD+N = 1% max, F = 1 kHz, R
L
= 16 Ω
= 32 Ω
Modes 1, 2, 7
THD+N = 1% max, F = 1 kHz, R
L
= 8 Ω
MLO output power
Total harmonic distortion
+ noise
Power supply rejection
Modes 5, 6
THD+N = 1% max, F = 1 kHz, R
L
THD+N = 1% max, F = 1 kHz, R
L
= 16 Ω
= 32 Ω
G = +1.5 dB, 20 Hz < F < 20 kHz
Modes 1, 2, 7, RL = 8 Ω , Pout = 200 mW
Modes 3, 4, RL = 16 Ω , Pout = 15 mW
Modes 5, 6, R
L
= 16 Ω , P out
= 30 mW
F = 217Hz, G = +1.5 dB, V ripple
Inputs grounded, C b
= 1 µF
= 200 mVpp,
Mode 1, speaker output, RL = 8 Ω
Mode 2, speaker output, RL = 8 Ω
Mode 3, headphone outputs, RL = 16 Ω
Mode 4, headphone outputs, RL = 16
Ω
Mode 5, MLO output, RL = 16 Ω
Mode 6, MLO output, RL = 16 Ω
Mode 7, BTL, speaker outputs, RL = 8 Ω
30
20
35
20
1.75
5.7
0.5
5
5
5
5
35
25
270 285
42
25
0.5
0.5
0.5
75
62
57
73
60
55
61
2.3
7.4
2
50
50
20
20 dB mA
µA mV mW
%
11/55
Electrical characteristics TS4956
Table 10.
V
CC
= +2.7 V, GND = 0 V, T amb
= 25° C (unless otherwise specified) (continued)
Symbol Parameter Conditions Min.
Typ.
Max.
Unit
Crosstalk Channel separation
SNR Signal-to-noise ratio
Mode 4
F = 1 kHz, R
L
= 16 Ω, P out
F = 20 Hz to 20 kHz, R
L
= 15 mW
= 16 Ω,
P out
= 15 mW
Mode 7
F = 1 kHz, R
L
= 8 Ω, P out
F = 20 Hz to 20 kHz, R
L
= 200 mW
= 8 Ω,
P out
= 200 mW
A-weighted, G = +1.5 dB, THD+N < 0.5%,
20 Hz < F < 20 kHz
Mode 1 - speaker output, RL = 8 Ω
Mode 2 - speaker output, RL = 8 Ω
Mode 3 - headphone output, RL = 16 Ω
Mode 4 - headphone output, RL = 16 Ω
Mode 5 - MLO output, RL = 16 Ω
Mode 6 - MLO output, R = 16 Ω
Mode 7 - BTL, speaker output, R
G = +10.5 dB
L
= 8
Ω
,
50
50
80
60
91
90
84
90
85
85
92
G Digital gain range
Digital gain stepsize
Stepsize error
-34.5
1.5
+12
0.1
Z in
Input impedance, all gain setting
Differential input
Differential input impedance (MIP to MIN)
MIP input impedance referenced to ground
MIN input impedance referenced to ground
Stereo input
RIN input impedance
LIN input impedance
48
24
36
24
24
60
30
45
30
30 t
WU t
STBY
Wake-up time
Standby time
70
1
1.
Dynamic measurements - 20*log(rms(V out
)/rms(V ripple
)). V ripple
is an added sinus signal to V
CC
at f = 217 Hz.
0.6
72
36
54
36
36
90 dB dB dB dB dB k Ω ms
µs
Obsolete Product(s) - Obsolete Product(s)
12/55
TS4956 Electrical characteristics
Table 11.
V
CC
= +3.3 V, GND = 0 V, T amb
= 25° C (unless otherwise specified)
Symbol Parameter Conditions Min.
Typ.
Max.
Unit
I
CC
Supply current
Mode 1, 2, no input signal, no load
Mode 3, no input signal, no load
Mode 4, no input signal, no load
Modes 5, 6, no input signal, no load
Mode 7, no input signal, no load
3.6
4.8
4.6
1.8
6
4.7
6.2
6
2.4
7.8
mA
Standby current No input signal 0.5
2 µA I
STBY
V
OO
P out
THD+N
Output offset voltage
Headphone output power
(phantom ground mode)
BTL, speaker output power
MLO output power
No input signal
Modes 1, 2 speaker output, RL = 8 Ω
Mode 3 headphone outputs, RL = 16 Ω
Mode 4 headphone outputs, RL = 16 Ω
Mode 7
BTL, speaker output, R
L
= 8 Ω
Modes 3, 4
THD+N = 1% max, F = 1 kHz, RL = 16
Ω
THD+N = 1% max, F = 1 kHz, RL = 32 Ω
Modes 1, 2, 7
THD+N = 1% max, F = 1 kHz, RL = 8 Ω
Modes 5, 6
THD+N = 1% max, F = 1 kHz, RL = 16 Ω
THD+N = 1% max, F = 1 kHz, RL = 32
Ω
Total harmonic distortion + noise
G = +1.5 dB, 20 Hz < F < 20 kHz
Modes 1, 2, 7, RL = 8 Ω , Pout = 300 mW
Modes 3, 4, RL = 16 Ω , Pout = 15 mW
Modes 5, 6, RL = 16 Ω , Pout = 50 mW
32
30
5
5
5
5
38
(1)
36
(1)
430 450
58
32
65
38
0.5
0.5
0.5
50
50
20
20
F = 217Hz, G = +1.5 dB,
Vripple = 200 mVpp, inputs grounded,
Cb = 1 µF
63
Mode 1, speaker output, RL = 8
Ω
Mode 2, speaker output, RL = 8 Ω
57
PSRR
Power supply rejection
63 dB ratio
(2) Mode 3, headphone outputs, RL = 16 Ω
Mode 4, headphone outputs, RL = 16 Ω
Obsolete Product(s) - Obsolete Product(s)
Mode 6, MLO output, RL = 16 Ω
77
64
58
74
Mode 7, BTL, speaker outputs, RL = 8
Ω mV mW
%
13/55
Electrical characteristics TS4956
Table 11.
V
CC
= +3.3 V, GND = 0 V, T amb
= 25° C (unless otherwise specified) (continued)
Symbol Parameter Conditions Min.
Typ.
Max.
Unit
Crosstalk Channel separation
SNR Signal-to-noise ratio
Mode 4
F = 1 kHz, RL = 16 Ω, Pout = 15 mW
F = 20 Hz to 20 kHz, RL = 16 Ω,
Pout = 15 mW
Mode 7
F = 1 kHz, RL = 8 Ω, Pout = 300 mW
F = 20 Hz to 20 kHz, RL = 8 Ω,
Pout = 300 mW
A-weighted, G = +1.5 dB, THD+N < 0.5%,
20 Hz < F < 20 kHz
Mode 1 - speaker output, RL = 8 Ω
Mode 2 - speaker output, RL = 8 Ω
Mode 3 - headphone output, RL = 16
Ω
Mode 4 - headphone output, RL = 16 Ω
Mode 5 - MLO output, RL = 16 Ω
Mode 6 - MLO output, R = 16 Ω
Mode 7 - BTL, speaker output, RL = 8
Ω
,
G = +10.5 dB
50
50
80
60
93
92
85
91
87
87
95
G Digital gain range
Digital gain stepsize
-34.5
1.5
+12
Stepsize error 0.1
0.6
Z in
Input impedance, all gain setting
Differential input
Differential input impedance (MIP to MIN)
MIP input impedance referenced to ground
MIN input impedance referenced to ground
Stereo input
RIN input impedance
LIN input impedance
48
24
36
24
24
60
30
45
30
30
72
36
54
36
36 t
WU t
STBY
Wake-up time
Standby time
70
1
1.
Internal power limitation on headphone outputs (see application information).
2.
Dynamic measurements - 20*log(rms(V out
)/rms(V ripple
)). V ripple
is an added sinus signal to V
CC
at F = 217 Hz.
90 dB dB dB dB dB k Ω ms
µs
Obsolete Product(s) - Obsolete Product(s)
14/55
TS4956 Electrical characteristics
Table 12.
V
CC
= +5 V, GND = 0 V, T amb
= 25° C (unless otherwise specified)
Symbol Parameter Conditions Min.
Typ.
Max.
Unit
I
CC
Supply current
Mode 1, 2, no input signal, no load
Mode 3, no input signal, no load
Mode 4, no input signal, no load
Modes 5, 6, no input signal, no load
Mode 7, no input signal, no load
4
5.3
5.2
1.9
6.7
5.2
6.9
6.8
2.5
8.7
mA
Standby current No input signal 0.5
2 µA I
STBY
V
OO
P out
THD+N
Output offset voltage
Headphone output power
(phantom ground mode)
BTL, speaker output power
MLO output power
No input signal
Modes 1, 2 speaker output, RL = 8 Ω
Mode 3 headphone outputs, RL = 16 Ω
Mode 4 headphone outputs, RL = 16 Ω
Mode 7
BTL, speaker output, RL = 8 Ω
Modes 3, 4
THD+N = 1% max, F = 1 kHz, RL = 16
Ω
THD+N = 1% max, F = 1 kHz, RL = 32 Ω
Modes 1, 2, 7
THD+N = 1% max, F = 1 kHz, RL = 8 Ω
Modes 5, 6
THD+N = 1% max, F = 1 kHz, RL = 16 Ω
THD+N = 1% max, F = 1 kHz, RL = 32
Ω
Total harmonic distortion + noise
G = +1.5 dB, 20 Hz < F < 20 kHz
Modes 1, 2, 7, RL = 8 Ω , Pout = 700 mW
Modes 3, 4, RL = 16 Ω , Pout = 15 mW
Modes 5, 6, RL = 16 Ω , Pout = 100 mW
32
35
5
5
5
5
39
(1)
43
(1)
1000 1055
140
80
150
88
0.5
0.5
0.5
50
50
20
20
F = 217Hz, G = +1.5 dB,
Vripple = 200 mVpp, inputs grounded,
Cb = 1 µF
PSRR
Power supply rejection ratio
(2)
Mode 1, speaker output, RL = 8
Ω
Mode 2, speaker output, RL = 8 Ω
Mode 3, headphone outputs, RL = 16 Ω
66
60
65 dB
Mode 4, headphone outputs, RL = 16 Ω
Obsolete Product(s) - Obsolete Product(s)
Mode 6, MLO output, RL = 16 Ω
78
66
61
Mode 7, BTL, speaker outputs, RL = 8
Ω
75 mV mW
%
15/55
Electrical characteristics TS4956
Table 12.
V
CC
= +5 V, GND = 0 V, T amb
= 25° C (unless otherwise specified) (continued)
Symbol Parameter Conditions Min.
Typ.
Max.
Unit
Crosstalk Channel separation
SNR Signal-to-noise ratio
Mode 4
F = 1 kHz, RL = 16 Ω, Pout = 15 mW
F = 20 Hz to 20 kHz, RL = 16 Ω,
Pout = 15 mW
Mode 7
F = 1 kHz, RL = 8 Ω, Pout = 700 mW
F = 20 Hz to 20 kHz, RL = 8 Ω,
Pout = 700 mW
A-weighted, G = +1.5 dB, THD+N < 0.5%,
20 Hz < F < 20 kHz
Mode 1 - speaker output, RL = 8 Ω
Mode 2 - speaker output, RL = 8 Ω
Mode 3 - headphone output, RL = 16
Ω
Mode 4 - headphone output, RL = 16 Ω
Mode 5 - MLO output, RL = 16 Ω
Mode 6 - MLO output, R = 16 Ω
Mode 7 - BTL, Speaker output, RL = 8
Ω
,
G = +10.5 dB
50
50
80
60
96
96
85
91
90
90
98
G Digital gain range
Digital gain stepsize
-34.5
1.5
+12
Stepsize error 0.1
0.6
Z in
Input impedance, all gain setting
Differential input
Differential input impedance (MIP to MIN)
MIP input impedance referenced to ground
MIN input impedance referenced to ground
Stereo input
RIN input impedance
LIN input impedance
48
24
36
24
24
60
30
45
30
30
72
36
54
36
36 t
WU t
STBY
Wake-up time
Standby time
70
1
1.
Internal power limitation on headphone outputs (see application information).
2.
Dynamic measurements - 20*log(rms(V out
)/rms(V ripple
)). V ripple
is an added sinus signal to V
CC
at F = 217 Hz.
90 dB dB dB dB dB k Ω ms
µs
Obsolete Product(s) - Obsolete Product(s)
16/55
TS4956 Electrical characteristics
Table 13.
Output noise V
CC
= 2.7 V to 5.5 V (all inputs grounded)
G = +12 dB G = +10.5 dB G = +1.5 dB
A-weighted filter
Unweighted filter
(20Hz - 20kHz)
A-weighted filter
Unweighted filter
(20Hz - 20kHz)
A-weighted filter
Unweighted filter
(20Hz - 20kHz)
Mode 1 - SPK out
V out
(µV)
54
V out
(µV)
80
V out
(µV)
67
V out
(µV)
100
V out
(µV)
45
V out
(µV)
66
Mode 2 - SPK out
Mode 3 - LHP, RHP
Mode 4 - LHP, RHP
Mode 5 - MLO
Mode 6 - MLO
Mode 7 - BTL,
SPK out
67
55
29
53
65
29
99
80
43
80
96
42
75
68
35
66
73
35
111
100
52
97
106
52
45
45
23
45
45
23
69
67
34
66
67
34
Obsolete Product(s) - Obsolete Product(s)
17/55
Electrical characteristics
Figure 4.
THD+N vs. output power
10
1
Mode 1, 2 - SPK out
RL = 8 Ω , G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=5V
F=20kHz
Vcc=3.3V
F=20kHz
Vcc=2.7V
F=20kHz
Figure 5.
THD+N vs. output power
10
1
Mode 1, 2 - SPK out
RL = 8 Ω , G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=5V
F=20kHz
Vcc=3.3V
F=20kHz
TS4956
0.1
0.01
Vcc=2.7V
F=1kHz
0.01
Vcc=3.3V
F=1kHz
0.1
Output power (W)
Vcc=5V
F=1kHz
1
Figure 6.
THD+N vs. output power
10
1
Mode 1, 2 - SPK out
RL = 16 Ω , G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=2.7V
F=20kHz
Vcc=5V
F=20kHz
Vcc=3.3V
F=20kHz
0.1
0.01
Vcc=2.7V
F=1kHz
Vcc=3.3V
F=1kHz
0.01
0.1
Output power (W)
Vcc=5V
F=1kHz
Figure 8.
THD+N vs. output power
10
1
Mode 3 - LHP, RHP
RL = 16 Ω , G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=3.3V
F=20kHz
Vcc=5V
F=20kHz
Vcc=2.7V
F=20kHz
0.1
0.01
Vcc=2.7V
F=20kHz
Vcc=2.7V
F=1kHz
0.01
Vcc=3.3V
F=1kHz
0.1
Output power (W)
Vcc=5V
F=1kHz
1
Figure 7.
THD+N vs. output power
10
1
Mode 1, 2 - SPK out
RL = 16 Ω , G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=5V
F=20kHz
Vcc=3.3V
F=20kHz
1
0.1
0.01
Vcc=2.7V
F=20kHz
Vcc=2.7V
F=1kHz
Vcc=3.3V
F=1kHz
0.01
0.1
Output power (W)
Vcc=5V
F=1kHz
Figure 9.
THD+N vs. output power
10
1
Mode 3 - LHP, RHP
RL = 16 Ω , G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=3.3V
F=20kHz
Vcc=5V
F=20kHz
Vcc=2.7V
F=20kHz
1
0.01
1E-3
Vcc=5V
F=1kHz
Vcc=3.3V
F=1kHz
0.01
Output power (W)
Vcc=2.7V
F=1kHz
0.1
0.1
0.01
1E-3
Vcc=5V
F=1kHz Vcc=3.3V
F=1kHz
0.01
Output power (W)
Vcc=2.7V
F=1kHz
0.1
18/55
TS4956 Electrical characteristics
Figure 10.
THD+N vs. output power
10
1
Mode 3 - LHP, RHP
RL = 32 Ω , G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=2.7V
F=20kHz
Figure 11.
THD+N vs. output power
10
Mode 3 - LHP, RHP
RL = 32 Ω , G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
1
Vcc=2.7V
F=20kHz
0.1
Vcc=3.3V
F=20kHz
0.01
1E-3
Vcc=5V
F=20kHz
Vcc=2.7V
F=1kHz
0.01
Output power (W)
Figure 12.
THD+N vs. output power
10
1
Mode 4 - LHP, RHP
RL = 16 Ω , G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=2.7V
F=20kHz
Vcc=5V
F=20kHz
Vcc=3.3V
F=20kHz
0.1
Vcc=5V
F=1kHz
Vcc=3.3V
F=1kHz
0.1
0.1
Vcc=3.3V
F=20kHz
0.01
1E-3
Vcc=5V
F=20kHz
Vcc=2.7V
F=1kHz
0.01
Output power (W)
Figure 13.
THD+N vs. output power
10
1
Mode 4 - LHP, RHP
RL = 16 Ω , G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=2.7V
F=20kHz
Vcc=3.3V
F=20kHz
Vcc=5V
F=20kHz
0.1
Vcc=5V
F=1kHz
Vcc=3.3V
F=1kHz
0.1
Vcc=2.7V
F=1kHz
Vcc=3.3V
F=1kHz
0.01
1E-3
Vcc=5V
F=1kHz
0.01
Output power (W)
Vcc=2.7V
F=1kHz
0.1
Vcc=3.3V
F=1kHz
0.01
1E-3
Vcc=5V
F=1kHz
0.01
Output power (W)
0.1
Figure 14.
THD+N vs. output power Figure 15.
THD+N vs. output power
10 10
Mode 4 - LHP, RHP
RL = 32 Ω , G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=5V
F=20kHz
Mode 4 - LHP, RHP
RL = 32 Ω , G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=5V
F=20kHz
1 1
Vcc=2.7V
F=20kHz
Vcc=3.3V
F=20kHz
Vcc=2.7V
F=20kHz
Vcc=3.3V
F=20kHz
0.1
0.1
Obsolete Product(s) - Obsolete Product(s)
Vcc=5V
F=1kHz
0.01
Vcc=2.7V
F=1kHz
Vcc=3.3V
F=1kHz
0.01
Vcc=2.7V
F=1kHz
Vcc=3.3V
F=1kHz
Vcc=5V
F=1kHz
1E-3 0.1
1E-3 0.1
0.01
Output power (W)
0.01
Output power (W)
19/55
Electrical characteristics TS4956
Figure 16.
THD+N vs. output power
10
1
Mode 5, 6 - MLO
RL = 16 Ω , G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=2.7V
F=20kHz
Vcc=5V
F=20kHz
Vcc=5V
F=1kHz
Figure 17.
THD+N vs. output power
10
1
Mode 5, 6 - MLO
RL = 16 Ω , G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=2.7V
F=20kHz
Vcc=5V
F=20kHz
Vcc=5V
F=1kHz
0.1
Vcc=3.3V
F=20kHz
0.01
1E-3
Vcc=2.7V
F=1kHz
Vcc=3.3V
F=1kHz
0.01
0.1
Output power (W)
Figure 18.
THD+N vs. output power
10
1
Mode 5, 6 - MLO
RL = 32 Ω , G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=2.7V
F=1kHz
Vcc=2.7V
F=20kHz
Vcc=5V
F=20kHz
Vcc=5V
F=1kHz
1
0.1
0.01
1E-3
Vcc=2.7V
F=1kHz
Vcc=3.3V
F=1kHz
0.01
0.1
Output power (W)
Vcc=3.3V
F=20kHz
Figure 19.
THD+N vs. output power
10
1
Mode 5, 6 - MLO
RL = 32 Ω , G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=2.7V
F=1kHz
Vcc=2.7V
F=20kHz
Vcc=5V
F=20kHz
Vcc=5V
F=1kHz
1
0.1
0.01
1E-3 0.01
Output power (W)
Vcc=3.3V
F=20kHz
0.1
Vcc=3.3V
F=1kHz
Figure 20.
THD+N vs. output power
10
1
Mode 7 - BTL, SPK out
RL = 8 Ω , G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=5V
F=20kHz
Vcc=3.3V
F=20kHz
Vcc=2.7V
F=20kHz
Vcc=2.7V
F=1kHz
0.01
1E-3
Vcc=3.3V
F=1kHz Vcc=5V
F=1kHz
0.01
0.1
Output power (W)
1
0.1
0.01
1E-3 0.01
Output power (W)
Vcc=3.3V
F=20kHz
0.1
Vcc=3.3V
F=1kHz
Figure 21.
THD+N vs. output power
10
1
Mode 7 - BTL, SPK out
RL = 16 Ω , G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=3.3V
F=20kHz
Vcc=2.7V
F=20kHz
Vcc=5V
F=20kHz
0.1
0.01
1E-3
Vcc=2.7V
F=1kHz
0.01
0.1
Output power (W)
Vcc=5V
F=1kHz
Vcc=3.3V
F=1kHz
1
20/55
TS4956
Figure 22.
THD+N vs. frequency
10
1
Mode 1, 2 - SPK out
RL = 8 Ω
G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=5V
Po=700mW
Vcc=2.7V
Po=200mW
Vcc=3.3V
Po=300mW
0.1
Electrical characteristics
Figure 23.
THD+N vs. frequency
10
1
Mode 1, 2 - SPK out
RL = 8 Ω
G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=5V
Po=700mW
Vcc=2.7V
Po=200mW
Vcc=3.3V
Po=300mW
0.1
0.01
20 100 1000
Frequency (Hz)
10000
Figure 24.
THD+N vs. frequency
10
1
Mode 1, 2 - SPK out
RL = 16 Ω
G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=5V
Po=400mW
Vcc=2.7V
Po=120mW
Vcc=3.3V
Po=200mW
0.1
0.01
20 100 1000
Frequency (Hz)
10000
Figure 25.
THD+N vs. frequency
10
1
Mode 1, 2 - SPK out
RL = 16 Ω
G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=5V
Po=400mW
Vcc=2.7V
Po=120mW
Vcc=3.3V
Po=200mW
0.1
0.01
20 100 1000
Frequency (Hz)
Figure 26.
THD+N vs. frequency
10
1
Mode 3 - LHP, RHP
RL = 16 Ω
G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=3.3V
Po=15mW
Vcc=2.7V
Po=15mW
10000
0.01
20 100 1000
Frequency (Hz)
Vcc=5V
Po=15mW
10000
0.01
20 100 1000
Frequency (Hz)
10000
Figure 27.
THD+N vs. frequency
10
1
Mode 3 - LHP, RHP
RL = 16 Ω
G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=3.3V
Po=15mW
Vcc=2.7V
Po=15mW
0.1
0.01
20 100 1000
Frequency (Hz)
Vcc=5V
Po=15mW
10000
21/55
Electrical characteristics
Figure 28.
THD+N vs. frequency
10
1
Mode 3 - LHP, RHP
RL = 32 Ω
G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=3.3V
Po=10mW
Vcc=2.7V
Po=10mW
0.1
0.01
20 100 1000
Frequency (Hz)
Vcc=5V
Po=10mW
10000
Figure 30.
THD+N vs. frequency
10
1
Mode 4 - LHP, RHP
RL = 16 Ω
G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=3.3V
Po=15mW
Vcc=5V
Po=15mW
0.1
Vcc=2.7V
Po=15mW
TS4956
Figure 29.
THD+N vs. frequency
10
1
Mode 3 - LHP, RHP
RL = 32 Ω
G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=3.3V
Po=10mW
Vcc=2.7V
Po=10mW
0.1
0.01
20 100 1000
Frequency (Hz)
Vcc=5V
Po=10mW
10000
Figure 31.
THD+N vs. frequency
10
1
Mode 4 - LHP, RHP
RL = 16 Ω
G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=2.7V
Po=15mW
Vcc=3.3V
Po=15mW
0.1
Vcc=5V
Po=15mW
0.01
20 100 1000
Frequency (Hz)
10000
Figure 32.
THD+N vs. frequency
10
1
Mode 4 - LHP, RHP
RL = 32 Ω
G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=2.7V
Po=10mW
Vcc=3.3V
Po=10mW
Vcc=5V
Po=10mW
0.01
20 100 1000
Frequency (Hz)
10000
Figure 33.
THD+N vs. frequency
10
1
Mode 4 - LHP, RHP
RL = 32 Ω
G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=2.7V
Po=10mW
Vcc=3.3V
Po=10mW
0.1
Vcc=5V
Po=10mW
0.01
20 100 1000
Frequency (Hz)
10000
0.01
20 100 1000
Frequency (Hz)
10000
22/55
TS4956
Figure 34.
THD+N vs. frequency
10
1
Mode 5, 6 - MLO
RL = 16 Ω
G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=5V
Po=100mW
Vcc=2.7V
Po=30mW
Vcc=3.3V
Po=50mW
0.1
Figure 35.
THD+N vs. frequency
10
1
Mode 5, 6 - MLO
RL = 16 Ω
G = +10.5dB
BW < 125kHz
Tamb = 25 ° C Vcc=5V
Po=100mW
Vcc=2.7V
Po=30mW
Vcc=3.3V
Po=50mW
0.1
Electrical characteristics
0.01
20 100 1000
Frequency (Hz)
10000
Figure 36.
THD+N vs. frequency
10
1
Mode 5, 6 - MLO
RL = 32 Ω
G = +1.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=5V
Po=60mW
Vcc=2.7V
Po=20mW
Vcc=3.3V
Po=30mW
0.1
0.01
20 100 1000
Frequency (Hz)
10000
Figure 37.
THD+N vs. frequency
10
1
Mode 5, 6 - MLO
RL = 32 Ω
G = +10.5dB
BW < 125kHz
Tamb = 25 ° C Vcc=5V
Po=60mW
Vcc=2.7V
Po=20mW
Vcc=3.3V
Po=30mW
0.1
0.01
20 100 1000
Frequency (Hz)
10000
Figure 38.
THD+N vs. frequency
10
1
Mode 7 - BTL, SPK out
RL = 8 Ω
G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
Vcc=2.7V
Po=200mW
Vcc=3.3V
Po=300mW
Vcc=5V
Po=700mW
0.01
20 100 1000
Frequency (Hz)
Figure 39.
THD+N vs. frequency
10
1
Mode 7 - BTL, SPK out
RL = 16 Ω
G = +10.5dB
BW < 125kHz
Tamb = 25 ° C
0.1
10000
Vcc=2.7V
Po=120mW
Vcc=3.3V
Po=200mW
Vcc=5V
Po=400mW
0.01
20 100 1000
Frequency (Hz)
10000
0.01
20 100 1000
Frequency (Hz)
10000
23/55
TS4956 Electrical characteristics
Figure 40.
Output power vs. power supply voltage
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
2.5
Mode 1, 2, 7
BTL, SPK out
F = 1kHz
BW < 125 kHz
Tamb = 25 ° C
3.0
RL=16 Ω
3.5
RL=8
4.0
Vcc (V)
Ω
4.5
RL=32 Ω
5.0
5.5
Figure 41.
Output power vs. power supply voltage
1600
1400
1200
1000
Mode 1, 2, 7
BTL, SPK out
F = 1kHz
BW < 125 kHz
Tamb = 25 ° C
800
600
400
200
0
2.5
3.0
3.5
RL=16 Ω
4.0
RL=8
Vcc (V)
Ω
4.5
RL=32 Ω
5.0
5.5
Figure 42.
Output power vs. power supply voltage
50
40
30
20
10
0
2.5
3.0
RL=32 Ω
3.5
RL=16 Ω
RL=64 Ω
4.0
Vcc (V)
4.5
Mode 3, 4
LHP, RHP
F = 1kHz
BW < 125 kHz
Tamb = 25 ° C
5.0
5.5
Figure 43.
Output power vs. power supply voltage
70
60
50
40
30
20
10
0
2.5
3.0
RL=32 Ω
3.5
RL=16 Ω
RL=64 Ω
4.0
Vcc (V)
4.5
Mode 3, 4
LHP, RHP
F = 1kHz
BW < 125 kHz
Tamb = 25 ° C
5.0
5.5
Figure 44.
Output power vs. power supply voltage
Figure 45.
Output power vs. power supply voltage
200 280
Mode 5, 6 Mode 5, 6
180
MLO MLO
240
F = 1kHz F = 1kHz
160
140
BW < 125 kHz
Tamb = 25 ° C
200
BW < 125 kHz
Tamb = 25 ° C Obsolete Product(s) - Obsolete Product(s)
100 RL=32 Ω
RL=16 Ω
160
RL=32 Ω
RL=16 Ω
120
80
60
40
20
RL=64 Ω
80
40
RL=64 Ω
0
2.5
0
2.5
3.0
3.5
4.0
Vcc (V)
4.5
5.0
5.5
3.0
3.5
4.0
Vcc (V)
4.5
5.0
5.5
24/55
TS4956 Electrical characteristics
Figure 46.
Output power vs. load resistance Figure 47.
Output power vs. load resistance
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
8
Vcc=5.5V
Vcc=3.3V
12
Vcc=5V
Vcc=2.7V
16 20 24
Load resistance ( Ω )
Mode 1, 2, 7
BTL, SPK out
F = 1kHz
BW < 125 kHz
Tamb = 25 ° C
28 32
1600
1400
1200
1000
800
600
400
200
0
8 12
Vcc=5.5V
Vcc=3.3V
Vcc=5V
Vcc=2.7V
16 20 24
Load resistance ( Ω )
Mode 1, 2, 7
BTL, SPK out
F = 1kHz
BW < 125 kHz
Tamb = 25 ° C
28 32
Figure 48.
Output power vs. load resistance Figure 49.
Output power vs. load resistance
70
60
50
40
30
Vcc=5.5V
Vcc=5V
Mode 3, 4
LHP, RHP
F = 1kHz
BW < 125 kHz
Tamb = 25 ° C
20
Vcc=3.3V
10
Vcc=2.7V
0
16 20 24 28 32 36 40 44 48 52 56 60 64
Load resistance ( Ω )
90
80
70
Vcc=5.5V
Mode 3, 4
LHP, RHP
F = 1kHz
BW < 125 kHz
Tamb = 25 ° C
60
50
Vcc=5V
40
30
20
10
Vcc=3.3V
Vcc=2.7V
0
16 20 24 28 32 36 40 44 48 52 56 60 64
Load resistance ( Ω )
Figure 50.
Output power vs. load resistance Figure 51.
Output power vs. load resistance
200 300
180
160
140
Vcc=5.5V
Mode 5, 6
MLO
F = 1kHz
BW < 125 kHz
Tamb = 25 ° C
250
200
Vcc=5.5V
Mode 5, 6
MLO
F = 1kHz
BW < 125 kHz
Tamb = 25 ° C
120 Vcc=5V
Vcc=5V
100 150
Vcc=2.7V
Vcc=3.3V
80 Obsolete Product(s) - Obsolete Product(s)
40
Vcc=2.7V
100
50
20
0
16
0
16 24 32 40 48
Load resistance ( Ω )
56 64 24 32 40 48
Load resistance ( Ω )
56 64
25/55
TS4956 Electrical characteristics
Figure 52.
PSRR vs. frequency
0
-20
Mode 1 - SPK out
Vcc = 2.7V
RL ≥ 8 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
-40
G=+12dB, +10.5dB
G=+6dB
G=+1.5dB
Figure 53.
PSRR vs. frequency
0
-20
Mode 1 - SPK out
Vcc = 5V
RL ≥ 8 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
-40
G=+12dB
-60
G=+10.5dB
G=+6dB
-60
-80
G=-34.5dB
G=-9dB
G=-18dB
-100
20 100 1000
Frequency (Hz)
Figure 54.
PSRR vs. frequency
0
-10
-20
-30
-40
-50
-60
Mode 2 - SPK out
Vcc = 3.3V
RL ≥ 8 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
-70
-80
-90
20
G=-34.5dB
100
G=+10.5dB
G=-18dB
1000
Frequency (Hz)
10000
G=+12dB
G=+6dB
G=+1.5dB
G=-9dB
10000
-80
-100
20
G=+1.5dB
100
G=-9dB
1000
Frequency (Hz)
G=-18dB
G=-34.5dB
10000
Figure 55.
PSRR vs. frequency
0
-20
Mode 1 - SPK out
Vcc = 3.3V
RL ≥ 8 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
-40
G=+12dB G=+10.5dB
G=+1.5dB
G=+6dB
-60
-80
-100
20 100
G=-18dB
1000
Frequency (Hz)
G=-9dB
G=-34.5dB
10000
Figure 56.
PSRR vs. frequency Figure 57.
PSRR vs. frequency
0 0
-10
-20
-30
Mode 2 - SPK out
Vcc = 2.7V
RL ≥ 8 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
G=+12dB
G=+10.5dB
G=+6dB
-10
-20
-30
Mode 2 - SPK out
Vcc = 5V
RL ≥ 8 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
G=+12dB, +10.5dB
G=+6dB
G=+1.5dB
-40 -40
G=+1.5dB
-50 -50
Obsolete Product(s) - Obsolete Product(s)
-70 -70
G=-9dB
-80
G=-18dB
-80
G=-34.5dB
G=-9dB
G=-34.5dB
G=-18dB
-90
20
-90
20 100 1000
Frequency (Hz)
10000 100 1000
Frequency (Hz)
10000
26/55
TS4956 Electrical characteristics
Figure 58.
PSRR vs. frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
20
Mode 3 - LHP, RHP
Vcc = 2.7V
RL ≥ 16 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
G=+6dB
G=-18dB
100
G=+1.5dB
G=+10.5dB
G=+12dB
G=-9dB
1000
Frequency (Hz)
G=-34.5dB
10000
Figure 59.
PSRR vs. frequency
-50
-60
-70
-80
-90
20
0
-10
-20
-30
-40
Mode 3 - LHP, RHP
Vcc = 5V
RL ≥ 16 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
G=+12dB G=+6dB
G=-18dB
100
G=+1.5dB
1000
Frequency (Hz)
G=+10.5dB
G=-34.5dB
G=-9dB
10000
Figure 60.
PSRR vs. frequency
0
-10
-20
-30
-40
Mode 4 - LHP, RHP
Vcc = 3.3V
RL ≥ 16 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
G=+10.5dB
G=+1.5dB
G=+12dB
G=+6dB
-50
-60
-70
-80
-90
-100
20
G=-18dB
100
G=-9dB
1000
Frequency (Hz)
G=-34.5dB
10000
Figure 61.
PSRR vs. frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
20
Mode 3 - LHP, RHP
Vcc = 3.3V
RL ≥ 16 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
G=+6dB
100
G=+1.5dB
G=-9dB
G=+10.5dB
G=+12dB
G=-34.5dB
1000
Frequency (Hz)
G=-18dB
10000
Figure 62.
PSRR vs. frequency Figure 63.
PSRR vs. frequency
0 0
-10
Mode 4 - LHP, RHP
Vcc = 2.7V
-10
Mode 4 - LHP, RHP
Vcc = 5V
-20 -20 RL ≥ 16 Ω , Cb = 1 μ F RL ≥ 16 Ω , Cb = 1 μ F
Inp. grounded Inp. grounded
-30 -30
Vripple = 200mVpp Vripple = 200mVpp
G=+10.5dB
-40 -40
G=+1.5dB
G=+10.5dB
G=+12dB
-50
G=+6dB
G=+1.5dB
-50
-60
G=+6dB
G=+12dB
-60 Obsolete Product(s) - Obsolete Product(s)
-80 -80
G=-34.5dB
-90
-100
20
G=-18dB
100
G=-9dB
1000
G=-34.5dB
10000
-90
G=-18dB
100 1000
G=-9dB
10000
-100
20
Frequency (Hz) Frequency (Hz)
27/55
TS4956 Electrical characteristics
Figure 64.
PSRR vs. frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
20
Mode 5 - MLO
Vcc = 2.7V
RL ≥ 16 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
100
G=-9dB
G=+12dB
G=+6dB
G=+10.5dB
G=+1.5dB
1000
Frequency (Hz)
G=-18dB
G=-34.5dB
10000
Figure 65.
PSRR vs. frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
20
Mode 5 - MLO
Vcc = 5V
RL ≥ 16 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
G=+1.5dB
100
G=+12dB
G=+6dB
1000
Frequency (Hz)
G=+10.5dB
G=-9dB
G=-18dB
G=-34.5dB
10000
Figure 66.
PSRR vs. frequency
-50
-60
-70
-80
-90
-100
20
0
-10
-20
-30
-40
Mode 6 - MLO
Vcc = 3.3V
RL ≥ 16 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
100
G=-9dB
G=+12dB
G=+6dB
G=+1.5dB
1000
Frequency (Hz)
G=+10.5dB
G=-34.5dB
G=-18dB
10000
Figure 67.
PSRR vs. frequency
0
-10
-20
-30
-40
Mode 5 - MLO
Vcc = 3.3V
RL ≥ 16 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
-50
-60
-70
-80
-90
-100
20
G=+1.5dB
G=-9dB
100
G=+12dB
1000
Frequency (Hz)
G=+10.5dB
G=+6dB
G=-18dB
G=-34.5dB
10000
Figure 68.
PSRR vs. frequency Figure 69.
PSRR vs. frequency
0 0
-10
-20
-30
Mode 6 - MLO
Vcc = 2.7V
RL ≥ 16 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
G=+12dB
G=+10.5dB
-10
-20
-30
Mode 6 - MLO
Vcc = 5V
RL ≥ 16 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
G=+12dB G=+10.5dB
G=+6dB
-40
G=+6dB
G=+1.5dB
-40
G=+1.5dB
-50 -50
-60 Obsolete Product(s) - Obsolete Product(s)
-80
G=-34.5dB
-70
-80
G=-18dB
G=-9dB
-60
G=-9dB
G=-34.5dB
-90 -90
G=-18dB
-100
20
-100
20 100 1000 10000 100 1000 10000
Frequency (Hz) Frequency (Hz)
28/55
TS4956 Electrical characteristics
Figure 70.
PSRR vs. frequency
0
-10
-20
-30
Mode 7 - BTL, SPK out
Vcc = 2.7V
RL ≥ 8 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
-40
-50
-60
-70
-80
-90
-100
20
G=-9dB
100
G=+12dB
G=+6dB
G=+1.5dB
G=-18dB
1000
Frequency (Hz)
G=+10.5dB
G=-34.5dB
10000
Figure 74.
CMRR vs. frequency
0
-20
Mode 1 - SPK out
Vcc = 2.7V, 3.3V, 5V
RL ≥ 8 Ω , Cb = 1 μ F
Cin = 470 μ F
Vic = 200mVpp
-40
G=+12dB
G=+6dB
G=+10.5dB
Figure 71.
PSRR vs. frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
20
Mode 7 - BTL, SPK out
Vcc = 5V
RL ≥ 8 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
G=-34.5dB
100
G=-18dB
G=+12dB
G=+6dB
G=+1.5dB
1000
Frequency (Hz)
G=+10.5dB
G=-9dB
10000
Figure 72.
PSRR vs. frequency
-50
-60
-70
-80
-90
-100
20
0
-10
-20
-30
-40
Mode 7 - BTL, SPK out
Vcc = 3.3V
RL ≥ 8 Ω , Cb = 1 μ F
Inp. grounded
Vripple = 200mVpp
G=-9dB
100
G=+12dB
G=+6dB
G=+1.5dB
G=-18dB
1000
Frequency (Hz)
G=+10.5dB
G=-34.5dB
10000
Figure 73.
CMRR vs. frequency
0
-20
Mode 3 - LHP, RHP
Vcc = 2.7V, 3.3V, 5V
RL ≥ 8 Ω , Cb = 1 μ F
Cin = 470 μ F
Vic = 200mVpp
-40
G=+12dB
G=+6dB G=+10.5dB
-60
-80
-100
G=-34.5dB
100
G=-18dB
1000
Frequency (Hz)
G=+1.5dB
G=-9dB
10000
Figure 75.
CMRR vs. frequency
0
-20
Mode 5 - MLO
Vcc = 2.7V, 3.3V, 5V
RL ≥ 16 Ω , Cb = 1 μ F
Cin = 470 μ F
Vic = 200mVpp
-40
G=+12dB
G=+10.5dB
G=+6dB
-60 -60 Obsolete Product(s) - Obsolete Product(s)
-80
G=+1.5dB
-80
G=+1.5dB
G=-9dB G=-18dB
G=-9dB
G=-18dB
G=-34.5dB
G=-34.5dB
-100 -100
100 1000 10000 100 1000 10000
Frequency (Hz) Frequency (Hz)
29/55
TS4956 Electrical characteristics
Figure 76.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20 kHz)
Mode 1, SPK out
G = +1.5dB, RL = 8 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 78.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 2, SPK out
G = +1.5dB, RL = 8 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 77.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20 kHz)
Mode 1, SPK out
G = +1.5dB, RL = 16 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 79.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20 kHz)
Mode 1, SPK out
G = +10.5dB, RL = 8 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 80.
SNR vs. power supply voltage Figure 81.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
100
98
96
94
92
90
88
86
84
82
80
78
76 Obsolete Product(s) - Obsolete Product(s)
70
68
Weighted filter type A
Mode 1, SPK out
G = +10.5dB, RL = 16 Ω
78
76
74
70
68
Weighted filter type A
Mode 2, SPK out
G = +10.5dB, RL = 8 Ω
66
64
62
60
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
5
66
64
62
60
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
5
Vcc (V) Vcc (V)
30/55
TS4956 Electrical characteristics
Figure 82.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 2, SPK out
G = +1.5dB, RL = 16 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 84.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 3 - LHP, RHP
G = +1.5dB, RL = 32 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 83.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 3 - LHP, RHP
G = +1.5dB, RL = 16 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 85.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 2, SPK out
G = +10.5dB, RL = 16 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 86.
SNR vs. power supply voltage Figure 87.
SNR vs. power supply voltage
90
88
86
84
82
80
78
76
74
72
70
90
88
86
84
82
80
78
76
74
72
70
68
66 Obsolete Product(s) - Obsolete Product(s)
60
58
Weighted filter type A
Mode 3 - LHP, RHP
G = +10.5dB, RL = 16 Ω
68
66
64
60
58
Weighted filter type A
Mode 3 - LHP, RHP
G = +10.5dB, RL = 32 Ω
56
54
52
50
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
5
56
54
52
50
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
5
Vcc (V) Vcc (V)
31/55
TS4956 Electrical characteristics
Figure 88.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 4 - LHP, RHP
G = +1.5dB, RL = 16 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 90.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 5 - MLO
G = +1.5dB, RL = 16 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 89.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 5 - MLO
G = +1.5dB, RL = 32 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 91.
SNR vs. power supply voltage
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
58
56
54
52
50
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 4 - LHP, RHP
G = +10.5dB, RL = 16 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 92.
SNR vs. power supply voltage Figure 93.
SNR vs. power supply voltage
90
88
86
84
82
80
78
76
74
72
70
90
88
86
84
82
80
78
76
74
72
70
68
66 Obsolete Product(s) - Obsolete Product(s)
60
58
Weighted filter type A
Mode 4 - LHP, RHP
G = +10.5dB, RL = 32 Ω
68
66
64
60
58
Weighted filter type A
Mode 5 - MLO
G = +10.5dB, RL = 16 Ω
56
54
52
50
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
5
56
54
52
50
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
5
Vcc (V) Vcc (V)
32/55
TS4956 Electrical characteristics
Figure 94.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 5 - MLO
G = +1.5dB, RL = 32 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 96.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 6 - MLO
G = +1.5dB, RL = 32 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 95.
SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 6 - MLO
G = +1.5dB, RL = 16 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 97.
SNR vs. power supply voltage
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
58
56
54
52
50
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 5 - MLO
G = +10.5dB, RL = 32 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 98.
SNR vs. power supply voltage Figure 99.
SNR vs. power supply voltage
90
88
86
84
82
80
78
76
74
72
70
90
88
86
84
82
80
78
76
74
72
70
68
66 Obsolete Product(s) - Obsolete Product(s)
60
58
Weighted filter type A
Mode 6 - MLO
G = +10.5dB, RL = 16 Ω
68
66
64
60
58
Weighted filter type A
Mode 6 - MLO
G = +10.5dB, RL = 32 Ω
56
54
52
50
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
5
56
54
52
50
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
5
Vcc (V) Vcc (V)
33/55
TS4956 Electrical characteristics
Figure 100. SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 7 - BTL, SPKout
G = +10.5dB, RL = 8 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
Figure 102. Current consumption vs. power supply voltage
2
1
0
0
4
3
8
7
No loads
Tamb = 25 ° C
6 Mode4
5
Mode 1,2
Mode 5,6
1
Mode3
2 3
Vcc (V)
Mode7
4 5
Figure 103. Frequency response modes 1, 2, 7
12
10
8
6
4
2
0
-2
Figure 101. SNR vs. power supply voltage
100
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
68
66
64
62
60
Weighted filter type A
Unweighted filter (20Hz to 20kHz)
Mode 7 - BTL, SPKout
G = +10.5dB, RL = 16 Ω
THD+N < 0.5%
Tamb = 25 ° C
2.7
3.3
Vcc (V)
5
G=+12dB, RL=16 Ω
G=+12dB, RL=8 Ω
Mode 1, 2, 7
BTL, SPK out
Cin = 330nF
Tamb 25 ° C
G=+6dB, RL=16 Ω
G=+6dB, RL=8 Ω
G=+1.5dB, RL=16 Ω
100
G=+1.5dB, RL=8 Ω
1000
Frequency (Hz)
10000
Figure 104. Frequency response modes 3, 4 Figure 105. Frequency response modes 5, 6
12
10
10
8
G=+12dB, RL=16 Ω ,32 Ω
Mode 3, 4
LHP, RHP
Cin = 330nF
Tamb 25 ° C
8
6
G=+12dB, RL=32 Ω
G=+12dB, RL=16 Ω
4
6
2
Obsolete Product(s) - Obsolete Product(s)
2
-2
-4
G=+6dB, RL=16 Ω
Ω
Mode 5, 6 - MLO
G=+1.5dB, RL=32 Ω
-6 Cin = 330nF
0 G=+1.5dB, RL=16 Ω ,32 Ω
-8 G=+1.5dB, RL=16 Ω
Cout = 220 μ F
Tamb 25 ° C
-2 -10
100 1000 10000 100 1000 10000
Frequency (Hz)
12
Frequency (Hz)
34/55
TS4956 Electrical characteristics
Figure 106. Frequency response modes 5, 6
-4
-6
-8
-10
0
-2
4
2
12
10
8
6
G=+12dB, RL=32 Ω
G=+12dB, RL=16 Ω
100
G=+6dB, RL=32 Ω
G=+6dB, RL=16 Ω
G=+1.5dB, RL=32
G=+1.5dB, RL=16 Ω
Ω
1000
Mode 5, 6 - MLO
Cin = 330nF
Cout = 470 μ F
Tamb 25 ° C
10000
Frequency (Hz)
Figure 107. Standby current consumption vs. power supply voltage
0.5
No loads
Tamb = 25 ° C
0.4
0.3
0.2
0.1
0.0
0 1 2 3
Vcc (V)
4 5
Figure 108. Power dissipation vs. output power
(per channel)
Figure 109. Power dissipation vs. output power
(per channel)
200
180
160
140
120
100
80
60
40
20
0
0
THD+N=1%
RL=8 Ω
50
RL=16 Ω
Mode 1, 2, 7
BTL, SPK out
Vcc = 2.7V
F = 1kHz
THD+N < 10%
100 150 200 250 300 350 400
Output Power (mW)
700
650
600
550
500
450
400
350
300
250
200
150
100
50
0
0
THD+N=1%
200
RL=8 Ω
RL=16 Ω
400 600 800
Output Power (mW)
Mode 1, 2, 7
BTL, SPK out
Vcc = 5V
F = 1kHz
THD+N < 10%
1000 1200 1400
Figure 110. Power dissipation vs. output power
(per channel)
Figure 111. Power dissipation vs. output power
(per channel)
300
900
800 250
700
200
150
THD+N=1%
RL=8 Ω
600
Obsolete Product(s) - Obsolete Product(s)
500
THD+N=1%
RL=8 Ω
400
300
100
50
0
0 100
RL=16 Ω
200 300 400
Output Power (mW)
Mode 1, 2, 7
BTL, SPK out
Vcc = 3.3V
F = 1kHz
THD+N < 10%
500 600
200
100
0
0
RL=16 Ω
Mode 1, 2, 7
BTL, SPK out
Vcc = 5.5V
F = 1kHz
THD+N < 10%
200 400 600 800 1000 1200 1400 1600 1800
Output Power (mW)
6
35/55
TS4956 Electrical characteristics
90
80
70
60
50
40
30
20
10
0
0
Figure 112. Power dissipation vs. output power
(per channel)
Figure 113. Power dissipation vs. output power
(per channel)
THD+N=1%
10
RL=16 Ω
RL=32 Ω
20
Mode 3, 4 - LHP, RHP
Vcc = 2.7V
F = 1kHz
THD+N < 10%
30
Output Power (mW)
40 50
220
200
180
160
140
120
100
80
60
40
20
0
0
THD+N=1%
10
RL=16 Ω
RL=32 Ω
20 30
Mode 3, 4 - LHP, RHP
Vcc = 5V
F = 1kHz
THD+N < 10%
40
Output Power (mW)
50 60 70
Figure 114. Power dissipation vs. output power
(per channel)
Figure 115. Power dissipation vs. output power
(per channel)
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0 10
THD+N=1%
RL=16 Ω
RL=32 Ω
20 30
Mode 3, 4 - LHP, RHP
Vcc = 3.3V
F = 1kHz
THD+N < 10%
40
Output Power (mW)
50 60
260
240
220
200
180
160
140
120
100
80
60
40
20
0
0
THD+N=1%
10
RL=16 Ω
RL=32 Ω
20 30
Mode 3, 4 - LHP, RHP
Vcc = 5.5V
F = 1kHz
THD+N < 10%
40
Output Power (mW)
50 60 70
Figure 116. Power dissipation vs. output power Figure 117. Power dissipation vs. output power
40
24
22
20
35
18
30
16
14
THD+N=1% Obsolete Product(s) - Obsolete Product(s)
10
8
25
15
THD+N=1%
RL=16 Ω
6
4
2
0
0
RL=32 Ω
Mode 5, 6 - MLO
Vcc = 2.7V
F = 1kHz
THD+N < 10%
10
5
0
0
RL=32 Ω
Mode 5, 6 - MLO
Vcc = 3.3V
F = 1kHz
THD+N < 10%
10 20 30 40 50 60 70
10 20 30 40 50 60 70 80 90 100
Output Power (mW)
Output Power (mW)
36/55
TS4956 Electrical characteristics
Figure 118. Power dissipation vs. output power Figure 119. Power dissipation vs. output power
90
80
70
60
THD+N=1%
50
40
RL=16 Ω
30
20
Mode 5, 6 - MLO
Vcc = 5V
10
RL=32 Ω
F = 1kHz
THD+N < 10%
0
0 20 40 60 80 100 120 140 160 180 200 220 240
Output Power (mW)
100
90
80
70
60
50
40
30
20
10
0
0
THD+N=1%
RL=16 Ω
RL=32 Ω
50 100 150 200
Output Power (mW)
Mode 5, 6 - MLO
Vcc = 5.5V
F = 1kHz
THD+N < 10%
250 300
Figure 120. Power derating curves
1.6
1.4
1.2
1.0
0.8
0.6
Heat sink surface = 125mm
0.4
0.2
0.0
0
No Heat sink
25 50 75 100
Ambiant Temperature ( ° C)
125
2
150
Figure 121. Crosstalk vs. frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
Mode 4
RL = 8 Ω
BTL out -> SPK out
SPK out -> BTL out
Tamb = 25 ° C
Vcc=2.7V
Po=200mW
100
Vcc=3.3V
Po=300mW
1000
Frequency (Hz)
Vcc=5V
Po=700mW
10000
Figure 122. Crosstalk vs. frequency
0
-10
-20
Vcc = 5V, 3.3V, 2.7V
Mode 4
LHP -> RHP
RHP -> LHP
Tamb = 25 ° C
-30
-40
RL=16 Ω
Po=15mW
RL=32 Ω
Po=10mW
-50
Obsolete Product(s) - Obsolete Product(s)
-60
-70
-80
100 1000
Frequency (Hz)
10000
37/55
TS4956 Application information
The TS4956 integrates four monolithic power amplifiers and has one differential input and two single-ended inputs. The output amplifiers can be configured in 7 different modes as one SE (single-ended) capacitively-coupled output, two phantom ground headphone outputs and two BTL outputs.
configuration schemes and Table 7 on page 8 describes these configurations in different
modes.
This chapter gives information on how to configure the TS4956 in an application.
4.1.1 Shutdown
When the device is in shutdown mode, all of the device’s outputs are in a high impedance state.
When the device is woken-up via the I²C interface, output amplifier on output MLO is biased to the V
CC
/2 voltage. In this configuration an output capacitor, C out
, on the single-ended output is needed to block the V
CC
/2 voltage and couples the audio signal to the load.
V
CC
/2 voltage is present on this output in all modes (modes 1 to 7) to keep the output capacitor C out
charged and to improve pop performance on this output during the switching between any given mode to mode 5 or 6.
When the device is in mode 5 or 6 where the single-ended output MLO is active, all other outputs are in a high impedance state.
In a phantom ground output configuration (modes 3 and 4) the internal buffer is connected to the PHG pin and biased to the V
CC
/2 voltage. Output amplifiers (pins LHP and RHP) are also biased to the V
CC
/2 voltage. One end of the load is connected to output amplifier and one to the PHG buffer. Therefore, no output capacitors are needed. The advantage of the
PHG output configuration is that there are fewer external components compared to an SE configuration. However, note that in this configuration, the device has a higher power
dissipation (see Section 4.3: Power dissipation and efficiency on page 40 ).
Obsolete Product(s) - Obsolete Product(s) is biased to V
CC
/2 voltage.
To achieve better crosstalk results in this case, each speaker should be connected with a separate PHG wire (two speakers connected with four wires) as shown in
Figure 1 on page 5 (instead of using only one common PHG wire for both speakers, that is, two
speakers connected with three wires).
38/55
TS4956 Application information
4.2
In a BTL (bridge tied load) output configuration (modes 1, 2 and 4), active outputs are biased to the V
CC
/2 voltage. All other inactive outputs are in the high impedance state except for the MLO output, which is biased to V
CC
/2 voltage.
BTL means that each end of the load is connected to two single-ended output amplifiers.
Therefore we have: single-ended output 1 = V out1
= V out
(V) single-ended output 2 = V out2
= -V out
(V) and
V out1
- V out2
= 2V out
(V)
For the same power supply voltage, the output voltage amplitude is twice as high as the output voltage in the single-ended or phantom ground configurations and the output power is four times higher than the output power in the single-ended or phantom ground configurations.
Power limitation in the phantom ground configuration
A power limitation is imposed on the headphones in mode 3 and 4. Limitation of output power is achieved by limiting the output voltage and output current on each amplifier.
The maximum value of the output voltage, V out max
, is set to a value of 1.65 V in order to reach a maximum output power of the sinusoidal signal of around 40 mW per channel with a
32 Ω load resistance and THD+N<1%.
The maximum value of output current I out max is set to value 70 mA in order to reach a maximum output power of the sinusoidal signal of around 40 mW per channel with a 16 Ω load resistance and THD+N<1%.
shows the functionality of the power limitation with different load resistances.
The maximum output power with these voltage and current limitations is reached with load values above 16 Ω and below 32 Ω
Figure 123. Voltage and current limitation on headphones
RL=32 Ohms
Vout
RL=24 Ohms
Vpeak
MAX
=1.65V
Ipeak
MAX
=70mA Iout
39/55
TS4956
4.3
Application information
Power dissipation and efficiency
Hypotheses:
●
●
The voltage and current in the load are sinusoidal (V out and I out
).
The supply voltage is a pure DC source (V
CC
).
Regarding the load we have:
V out
= V
PEAK sin ω t V and
I out
=
V out
R
L and
P out
=
V
2
----------------- A
2R
L
( ) cc
AVG
=
2 π
∫
0
V
-----------------
R
L sin ( ) d t =
V
PEAK
π R
L
( )
Figure 124. Current delivered by supply voltage in a single-ended output configuration
The power delivered by the supply voltage is:
P supply
= V
CC
I
CC
AVG
W
Therefore, the power dissipation by the single-ended amplifier is
= P supply
– P out
P diss
=
2V
------------------- P
π R
L out
– P out and the maximum value is obtained when:
∂ P diss
∂ P out
= 0
40/55
TS4956
Note:
Application information and its value is:
P diss
MAX
=
V
2
( )
π 2
R
L
This maximum value depends only on the power supply voltage and load values.
The efficiency is the ratio between the output power and the power supply:
η =
P
-------------------
P supply
=
π
V
PEAK
---------------------
2V
CC
The maximum theoretical value is reached when V
PEAK
= V
CC
/2, so
η
=
π
4
= 78.5%
The average current delivered by the supply voltage is:
Icc
AVG
=
π
∫
0
π
V
-----------------
R
L sin t d t =
2V
PEAK
π R
L
( )
Figure 125. Current delivered by supply voltage in a phantom ground output configuration
The power delivered by the supply voltage is:
P supply
= V
CC
I
CC
AVG
W
Then, the power dissipation by each amplifier is
P diss
= ⎜
⎝
⎛
2 2V
---------------------- P
π
R
L out
⎞
⎟
⎠
– P out
Obsolete Product(s) - Obsolete Product(s)
∂ P diss
∂ P out
= 0 and its value is:
P diss
MAX
=
2V
2
( )
π 2
R
L
This maximum value depends only on the power supply voltage and load values.
Note:
41/55
TS4956 Application information
The efficiency is the ratio between the output power and the power supply.
η
=
P
-------------------
P supply
=
π V
PEAK
---------------------
4V
CC
The maximum theoretical value is reached when V
PEAK
= V
CC
/2 , so
η =
π
8
= 39.25%
In modes 3 and 4, the TS4956 has two active output power amplifiers. Each amplifier produces heat due to its power dissipation. Therefore the maximum die temperature is the sum of each amplifier’s maximum power dissipation. It is calculated as follows.
P diss 1
= power dissipation due to the first power amplifier.
P diss 2
= power dissipation due to the second power amplifier.
Total P diss
= P diss 1
+ P diss 2
(W)
In most cases, P diss 1
= P diss 2
, giving:
TotalP diss
= 2P diss1
TotalP diss
=
4 2V
---------------------- P
π R
L out
– 2P out
The average current delivered by the supply voltage is:
Icc
AVG
=
π
∫
0
π
V
-----------------
R
L sin t d t =
2V
PEAK
π
R
L
( )
Figure 126. Current delivered by supply voltage in a BTL output configuration
Obsolete Product(s) - Obsolete Product(s)
P
AVG
W supply
= V
CC
I
CC
Then, the power dissipation by each amplifier is:
P diss
=
2 2V
---------------------- P
π R
L out
– P out
42/55
TS4956
Note:
Application information and the maximum value is obtained when:
∂ P diss
∂ P out
= 0 and its value is:
P diss
MAX
=
2V
2
( )
π
2
R
L
This maximum value depends only on the power supply voltage and load values.
The efficiency is the ratio between the output power and the power supply.
η
=
P
-------------------
P supply
=
π V
PEAK
---------------------
4V
CC
The maximum theoretical value is reached when V
PEAK
= V
CC
, so
η
=
π
4
= 78.5%
The TS4956 has one active output BTL power amplifier when in modes 1 and 2. In mode 7, the TS49656 has two active output BTL power amplifiers.
Each amplifier produces heat due to its power dissipation. Therefore the maximum die temperature is the sum of each amplifier’s maximum power dissipation. It is calculated as follows.
●
●
P diss 1
= power dissipation due to the first BTL power amplifier.
P diss 2
= power dissipation due to the second BTL power amplifier.
● Total P diss
= P diss 1
+ P diss 2
(W)
In most cases, P diss 1
= P diss 2
, giving:
TotalP diss
= 2P diss1
TotalP diss
=
4 2V
---------------------- P
π R
L out
– 2P out
(W)
Obsolete Product(s) - Obsolete Product(s)
43/55
TS4956
4.4 Low frequency response
Application information
Note:
The input coupling capacitor blocks the DC part of the input signal at the amplifier input. In the low-frequency region, C in
starts to have an effect. C pass filter with -3 dB cut-off frequency.
in
with Z in
forms a first-order, high-
F
CL
=
2 π Z
1
----------------------- (Hz) in
C in
Z in
is the input impedance of the corresponding input.
For all inputs, the impedance value remains constant for all gain settings. This means that the lower cut-off frequency does not change with the gain setting. Note also that 30 k
Ω
is a typical value and there is tolerance around this value. Using
you can easily establish the C in
value required for a -3 dB cut-off frequency.
Figure 127. 3dB lower cutoff frequency vs. input capacitance
100
All gain setting
Tamb=25 ° C
Minimum Input
Impedance
10
Typical Input
Impedance
Maximum Input
Impedance
0.1
Input Capacitor Cin ( μ F)
1
In the single-ended configuration an external output coupling capacitor, C out
, is needed.
This coupling capacitor C out
, together with the output load R
L
, forms a first-order high-pass filter with -3 dB cut off frequency.
F
CL
= -------------------------- Hz
2 R
L
C out
)
Obsolete Product(s) - Obsolete Product(s)
See
to establish the C out
value for a -3 dB cut-off frequency required.
These two first-order filters form a second-order high-pass filter. The -3 dB cut-off frequency of these two filters should be the same, so the following formula should be respected:
2
π
Z in
C in
≅
2
π
R
L
C out
44/55
TS4956 Application information
Figure 128. 3dB lower cut off frequency vs. output capacitance
100
All gain setting
Tamb = 25 ° C
10
RL=16 Ω
RL=32 Ω
1
100 1000
Output capacitor Cout ( μ F)
4.5 Single-ended input configuration in modes 1, 3 and 5
It is possible to use the differential inputs MIP and MIN of the TS4956 as one single-ended input in modes where the differential inputs are active (modes 1, 3 and 5).
Figure 129 illustrates this configuration.
Figure 129. Single-ended input in modes 1, 3 and 5 for a typical application
Vcc
A A
C s 1
1 µ F
C s 2
100nF
B B
T S 4956
LHP Amplifier MODE 3 : GxMIP
Cin1
A1 MIP LHP B6
S tereo
Inp u t Left
16/ 3 2 Ohm s
+
33 0nF
PHG Amplifier
Cin2
A2 MIN PHG A7
C
S tereo
Inp u t Right
C
+
33 0nF
MODE 3 : GxMIP
RHP Amplifier
RHP D6 16/ 3 2 Ohm s
Mode
S elect
B4 LIN S pe a ker Amplifier
B2
MODE1: GxMIP
S tereo
Inp u t Left
S RP+
8 Ohm s
D D
A5 RIN
S RN-
MLO Amplifier
D2
MODE5: GxMIP
S tereo
Inp u t Right
Co u t
+ MLO E7 Obsolete Product(s) - Obsolete Product(s)
E
Bi as I2C
Digit a l vol u me control
R1
1k
E
BYPA SS I2CVCC
C b
1 µ F
I2CVCC
S CL
S DA
I2C BU S
F F
45/55
TS4956
4.6
Application information
Decoupling of the circuit
Two capacitors are needed to properly bypass the TS4956 — a power supply capacitor C s and a bias voltage bypass capacitor C b
.
C s
has a strong influence on the THD+N at high frequencies (above 7 kHz) and indirectly on the power supply disturbances.
With a C s
value of about 1 μ F, you can expect to obtain THD+N performances similar to those shown in the datasheet.
If C s
is lower than 1 μ F, THD+N increases in high frequency and disturbances on power supply rail are less filtered.
On the contrary, if C s
is higher than 1 μ F, disturbances on the power supply rail are more filtered.
C b
has an influence on THD+N at lower frequencies, but its value has critical impact on the final result of PSRR with inputs grounded at lower frequencies:
● If C b
is lower than 1
μ
F, THD+N increases at lower frequencies and the PSRR worsens upwards.
● If C b
is higher than 1 μ F, the benefit on THD+N and PSRR in the lower frequency range is small.
The value of C b
also has an influence on startup time.
When power is applied to V
CC
, an internal power-on reset holds the TS4956 in a reset state
(shutdown) until the supply voltage reaches its nominal value. The power-on reset has a typical threshold of 1.75 V.
During this reset state the output configuration is the same as in the shutdown mode.
Obsolete Product(s) - Obsolete Product(s)
46/55
TS4956 Application information
4.8.2
The PSRR is the power supply rejection ratio. The PSRR of a device is the ratio between a power supply disturbance and the result on the output. In other words, the PSRR is the ability of a device to minimize the impact of power supply disturbance to the output.
How is PSRR measured?
The PSRR was measured with the TS4956 configured as shown in
Figure 130. Configuration of TS4956 for PSRR measurement
A
Vripple
A
Vcc
B B
C
D
E
10 Ohm s
10 Ohm s
10 Ohm s
T S 4956
Diff. inp u t +
Cin1
A1
+
33 0nF
MIP S tereo
Inp u t Left
Cin2
+
33 0nF
Diff. inp u t -
A2 MIN
S E inp u t left
Cin 3
+
33 0nF
B4 LIN
S tereo
Inp u t Right
S tereo
Inp u t Left
10 Ohm s
Cin4
+
33 0nF
S E inp u t right
A5
RIN S tereo
Inp u t Right
Mode
S elect
LHP Amplifier
PHG Amplifier
LHP
PHG
B6
A7
MODE7
RL
16 Ohm s
RL
8 Ohm s
RL
16 Ohm s RHP Amplifier
RHP
S pe a ker Amplifier
S RP+
MLO Amplifier
S RN-
MLO
D6
B2
D2
E7
Co u
+
220 µ F
RL
8 Ohm s
RL
16 Ohm s
Digit a l vol u me control
C
D
E
Bi as
BYPA SS I2CVCC
I2C
F
C b
1 µ F
I2CVCC
S CL
S DA
I2C BU S
F
Main operating principles of TS4956 for purposes of PSRR measurement
Obsolete Product(s) - Obsolete Product(s)
● The AC sinusoidal ripple voltage (V ripple
) is fixed.
● No bypass capacitor C s
is used.
The PSRR value for each frequency is calculated as:
PSRR = 20Log
RMS
---------------------------------- dB
)
RMS
(
Vripple
)
RMS is a rms selective measurement.
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TS4956
4.9
Application information
Pop and click performance
The TS4956 has an internal pop and click reduction circuitry which eliminates the output transients, such as, for example, during switch-on or switch-off phases, or during a switch from one output mode to another, or when changing the volume. The performance of this circuitry is closely linked to the values of the input capacitor C in
, the output capacitor C out
(for single-ended configuration) and the bias voltage bypass capacitor C b
.
The values of C in
and C out
are determined by the lower cut-off frequency value requested.
The value of C b
will affect the THD+N and PSRR values at lower frequencies.
The TS4956 is optimized to have low pop and click in the typical schematic configurations
(
).
The TS4956 device has an internal thermal shutdown protection in the event of extreme temperatures. Thermal shutdown is active when the device reaches a temperature of
150° C.
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TS4956 Application information
A demonstration board for the TS4956 is available.
For more information about this demonstration board, refer to the application note AN2465, which you can find on www.st.com.
Figure 131. Demonstration board schematic for the TS4956
I2C S UPPLY
Cn1
I2CVCC Vcc
3
2
1
Cn5
Vcc
Cn2
T S 4956 POWER S UPPLY
C s 1
1 µ F
C s 2
100nF
Diff. inp u t +
JP1
4
3
2
1
Diff. inp u t -
Cin1
+
33 0nF
Cin2
+
33 0nF
T S 4956
7 MIP S tereo
Inp u t Left
5 MIN
S tereo
Inp u t Right
S E inp u t left
JP2
1
2
Cin 3
+
33 0nF
JP 3
1
2
S E inp u t right
Cin4
+
33 0nF
4
LIN S tereo
Inp u t Left
3
RIN S tereo
Inp u t Right
Mode
S elect
Bi as
BYPA SS I2CVCC
I2C
LHP Amplifier
LHP 1
PHG Amplifier
PHG 2
RHP Amplifier
RHP
S pe a ker Amplifier
S RP+
S RN-
MLO Amplifier
MLO
15
6
10
16
C2
+
R7
1K
220 µ F
Digit a l vol u me control
JP6
1
2
3
JP4
1
2
JP5
1
2
PHONEJACK S TEREO
1
2
3
J2
C1
1 µ F
J1
DB9
5
9
4
8
3
7
GND
DTR
TXD
RT S
1
D S R
16
1A
15
KP1040
GND2
R2
1K
R1
2k2
R 3
1K
I2CVCC
R4
1 8 0R
1
2
D1
1B
1N414 8
D2
1N414 8
4
KP1040
GND2
5
1C
6
KP1040
GND2
I2CVCC
Cn 3 Cn4
S DA
T1
B S 170
S CL S DA
S CL S DA
I2CVCC I2CVCC
R5
10K
R6
10K
S CL S DA
14
1 3
12
11
I2C BU S
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TS4956 Package information
5.1
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK
® specifications, grade definitions and product status are available at: www.st.com.
ECOPACK
®
is an ST trademark.
18-bump flip-chip package
Figure 132. 18-bump flip-chip package
2500
μ m
750
μ m
500
μ m
2400
μ m
Die size: 2.5 x 2.4 mm ± 30 µm
Die height (including bumps): 600 µm
Bumps diameter: 315 µm ±50 µm
Bump diameter before reflow: 300 µm
±10 µm
Bumps height: 250 µm ±40 µm
Die height: 350 µm ±20 µm
Pitch: 500 µm ±50 µm
Coplanarity: 50 µm max
Optional*: back coating height: 40 µm
866
μ m
866 μ m
600
μ m
40 μ m*
Figure 133. Footprint recommendations
500 μ m
Φ =250 μ m
500 μ m
100 μ m max.
Φ =400 μ m
150
μ m min.
Obsolete Product(s) - Obsolete Product(s)
Pad in Cu 18
μ m with Flash NiAu ( 2-6
μ m, 0.2
μ m max)
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TS4956
Figure 134. Pinout (top view)
Package information
Figure 135. Marking (top view)
Markings are:
– ST logo
– First two letters give part number code: 56
– Third letter gives assembly plant code: X
– Three digit date code: YWW
– Lead-free EcoPack symbol: E
– The dot marks pin A1
Figure 136. Tape and reel schematic (top view) holes.
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TS4956 Package information
The daisy chain sample features pins connected two by two. Figure 137
illustrates the way in which the pins are connected to each other. This sample is used for testing continuity on the board. The PCB needs to be designed the opposite way, so that pins that are unconnected in the daisy chain sample are connected on the PCB. If you do this, by simply connecting an ohmmeter between pin A1 and pin A3, the soldering process continuity can be tested.
Figure 137. Top view of daisy chain sample
Obsolete Product(s) - Obsolete Product(s)
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TS4956 Ordering information
Table 14.
Order code for daisy chain sample
Order code
TSDC02JT
Temperature range
-40, +85 ° C
Package
Flip-Chip18
Table 15.
Order codes
Order code Temperature range
TS4956EIJT -40°C to +85°C
Package
Lead free flip-chip18
Packing
Tape & reel
Marking
DC2
Marking
56
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TS4956 Revision history
Table 16.
Document revision history
Date Revision
01-Nov-2005
01-Dec-2005
01-May-2006
10-Mar-2009
1
2
3
4
Changes
First release corresponding to the preliminary data version.
Cancellation of the back coating sale type.
Final datasheet.
Document reformatted.
Updated input impedance values in all tables in
Chapter 3: Electrical characteristics .
Obsolete Product(s) - Obsolete Product(s)
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TS4956
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Obsolete Product(s) - Obsolete Product(s)
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