STMicroelectronics TS2007 Datasheet
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TS2007
3 W filter-free Class D audio power amplifer with
6-12 dB fixed gain select
Features
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Operating range from V
CC
= 2.4 V to 5.5 V
Standby mode active low
Output power: 1.4 W at 5 V or 0.45 W at 3.0 V into 8 Ω with 1% THD+N max.
Output power: 2.3 W at 5 V or 0.75 W at 3.0 V into 4 Ω with 1% THD+N max.
Fixed gain select: 6 dB or 12 dB
Low current consumption
Efficiency: 88% typ.
Signal-to-noise ratio: 94 dB typ.
PSRR: 63 dB typ at 217 Hz with 6 dB gain
PWM base frequency: 280 kHz
Low pop & click noise
Thermal shutdown protection
DFN8 3 x 3 mm package
Applications
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Cellular phones
PDAs
Notebook PCs
TS2007IQT - DFN8
TS2007IQT - DFN8
Description
The TS2007 is a class D power audio amplifier.
Able to drive up to 1.4 W into an 8 Ω load at 5 V, it Obsolete Product(s) - Obsolete Product(s) typical class AB audio power amplifiers.
The TS2007 is available in DFN8 3 x 3 mm leadfree packages.
This device allows switching between two different gains: 6 or 12dB via a logic signal on the
GS pin. A pop & click reduction circuitry provides low on/off switching noise while allowing the device to start within 5 ms. A standby function
(active low) allows lowering the current consumption down to 10 nA typ.
May 2011 Doc ID 13123 Rev 4 1/29 www.st.com
29
TS2007 Contents
Contents
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Differential configuration principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Common-mode feedback loop limitations . . . . . . . . . . . . . . . . . . . . . . . . 22
Low frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
wu
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Consumption in shutdown mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Single-ended input configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Obsolete Product(s) - Obsolete Product(s)
2/29 Doc ID 13123 Rev 4
TS2007
1
Absolute maximum ratings and operating conditions
Absolute maximum ratings and operating conditions
Table 1.
Symbol
V
CC
V i
T oper
T stg
T j
R thja
Pd
ESD
ESD
Absolute maximum ratings
Parameter
Supply voltage
(1)
Input voltage
(2)
Operating free air temperature range
Storage temperature
Maximum junction temperature
Thermal resistance junction to ambient
(3)
Power dissipation
Value
6
GND to V
CC
-40 to + 85
-65 to +150
150
200
Internally limited
HBM: human body model
MM: machine model
Latch-up Latch-up immunity
Lead temperature (soldering, 10 sec)
2
200
Class A
260
R
L
Minimum load resistor 3.2
1.
All voltage values are measured with respect to the ground pin.
2.
The magnitude of the input signal must never exceed V
CC
+ 0.3 V / GND - 0.3 V.
3.
The device is protected in case of over temperature by a thermal shutdown active @ 150 °C.
4.
Exceeding the power derating curves during a long period will cause abnormal operation.
(4)
Table 2.
Symbol
Operating conditions
Parameter Value
V
CC
V
I
V ic
Supply voltage
Input voltage range
Input common mode voltage
(1)
2.4 to 5.5
GND to V
CC
GND+0.15 V to V
CC
-0.7 V
V
STBY
Standby voltage input
(2)
Device ON
Device OFF
1.4
≤
V
GND ≤ V
STBY
STBY
≤
≤
V
CC
0.4
(3)
Gain select input:
R
L
Load resistor
GND ≤ V
GS
1.4
≤ V
GS
≤ 0.4
≤ V
CC
≥ 4
R thja
Thermal resistance junction to ambient
(4)
40
1.
I V oo
I
≤
35 mV max with both differential gains.
2.
Without any signal on V
STBY
, the device is in standby (internal 300 k
Ω
pull down resistor).
3.
Minimum current consumption is obtained when V
STBY
= GND.
4.
When mounted on 4-layer PCB.
Unit
V
V
V
Unit
V
V
°C
°C
°C
°C/W kV
V
°C
Ω
V
V
Ω
°C/W
Doc ID 13123 Rev 4 3/29
Typical application
Figure 1.
Typical application schematics
VCC
VCC
In-
Differential
Input
In+
Input capacitors are optional
Cin
Cin
4
3
GS
IN-
IN+
Gain
Select
-
+
Standby
Control
Standby
Cs
1uF
TS2007
Vcc
PWM
OUT+
H
Bridge
OUT-
8
5
Oscillator
Gnd
Speaker
TS2007
In-
Differential
Input
In+
VCC
VCC
VCC
Input capacitors are optional
Cin
Cin
4
3
GS
IN-
IN+
Gain
Select
-
+
Standby
Control
Standby
Cs
1uF
TS2007
Vcc
PWM
OUT+
H
Bridge
OUT-
8
5
Oscillator
Gnd
Load
Obsolete Product(s) - Obsolete Product(s)
VCC
Table 3.
External component descriptions
Components Functional description
C
S
C in
Supply capacitor that provides power supply filtering.
Input coupling capacitors (optional) that block the DC voltage at the amplifier input terminal. The capacitors also form a high pass filter with Z in
(F cl
= 1 / (2 x Pi x Z in
x C in
)).
4/29 Doc ID 13123 Rev 4
TS2007
Table 4.
Pin number
Pin descriptions
Pin name
6
7
4
5
8
1
2
3
STBY
GS
IN+
IN-
OUT-
VCC
GND
OUT+
Pin description
Standby pin ( active low )
Gain select input
Positive differential input
Negative differential input
Negative differential output
Power supply
Ground
Positive differential output
Typical application
Obsolete Product(s) - Obsolete Product(s)
Doc ID 13123 Rev 4 5/29
Electrical characteristics TS2007
3.1 Electrical characteristic tables
Table 5.
Symbol
V
CC
= +5 V, GND = 0 V, V ic
=2.5 V, T amb
= 25 °C (unless otherwise specified)
Parameter Min.
Typ.
Max.
Unit
I
CC
I
CC-STBY
V oo
P o
THD + N
Efficiency
PSRR
CMRR
Supply current
No input signal, no load
Standby current
(1)
No input signal, V
STBY
= GND
Output offset voltage
Floating inputs, R
L
= 8 Ω
Output power
THD = 1% max, f = 1 kHz, R
L
THD = 1% max, f = 1 kHz, R
L
= 4 Ω
= 8 Ω
THD = 10% max, f = 1 kHz, R
L
THD = 10% max, f = 1 kHz, R
L
= 4 Ω
= 8 Ω
Total harmonic distortion + noise
P o
= 1W
RMS
, G = 6 dB, f =1 kHz, R
L
= 8 Ω
Efficiency
P o
P o
= 2.1 W
RMS
, R
L
= 1.3 W
RMS
, R
L
= 4 Ω (with LC output filter)
= 8
Ω
(with LC output filter)
Power supply rejection ratio with inputs grounded, C in
=1µF
(2) f = 217 Hz, R
L f = 217 Hz, R
L
= 8
Ω,
Gain=6 dB
,
V ripple
= 200 mV pp
= 8 Ω, Gain=12 dB , V ripple
= 200 mV pp
Common mode rejection ratio 20 Hz < f < 20 kHz
2.3
10
2.3
1.4
2.8
1.7
0.4
84
90
63
60
60
3.3
1000
25 mA nA mV
W
%
% dB dB
Gain
Z in
F
PWM
Gain value
G
S
=0 V
G
S
= V
CC
Single input impedance
(3)
Pulse width modulator base frequency
11.5
5.5
68
190
12
6
75
280
12.5
6.5
82
370 dB k Ω kHz
SNR
Signal-to-noise ratio (A-weighting)
Po=1.5 W, R
L
=4 Ω (with LC output filter)
94
Obsolete Product(s) - Obsolete Product(s) dB ms
6/29 Doc ID 13123 Rev 4
TS2007 Electrical characteristics
Table 5.
Symbol
V
CC
= +5 V, GND = 0 V, V ic
=2.5 V, T amb
= 25 °C (unless otherwise specified) (continued)
Parameter Min.
Typ.
Max.
Unit t
STBY
V
N
Standby time
Output voltage noise f = 20 Hz to 20 kHz, R
L
=4 Ω
Unweighted (Filterless, G=6 dB)
A-weighted (Filterless, G=6 dB)
Unweighted (with LC output filter, G=6 dB)
A-weighted (with LC output filter, G=6 dB)
Unweighted (Filterless, G=12 dB)
A-weighted (Filterless, G=12 dB)
Unweighted (with LC output filter, G=12 dB)
A-weighted (with LC output filter, G=12 dB)
5
74
50
69
49
94
65
86
64
1.
Standby mode is active when V
STBY
is tied to GND.
2.
Dynamic measurements - 20*log(rms(V out
)/rms(V ripple
)). V ripple
is the superimposed sinus signal to V
CC
@ f = 217Hz.
3.
Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
ms
μ V
RMS
Obsolete Product(s) - Obsolete Product(s)
Doc ID 13123 Rev 4 7/29
Electrical characteristics TS2007
Table 6.
Symbol
V
CC
= +4.2 V, GND = 0 V, V ic
=2.1 V, T amb
= 25 °C (unless otherwise specified)
(1)
Parameter Min.
Typ.
Max.
Unit
I
I
CC
CC-STBY
V
P oo o
THD + N
Efficiency
PSRR
Supply current
No input signal, no load
Standby current
(2)
No input signal, V
STBY
= GND
Output offset voltage
Floating inputs, R
L
= 8 Ω
Output power
THD = 1% max, f = 1 kHz, R
L
THD = 1% max, f = 1 kHz, R
L
= 4 Ω
= 8 Ω
THD = 10% max, f = 1 kHz, R
THD = 10% max, f = 1 kHz, R
L
= 4 Ω
L
= 8 Ω
Total harmonic distortion + noise
P o
= 800 mW
RMS
, G = 6 dB, f =1 kHz, R
L
= 8 Ω
Efficiency
P o
= 1.5 W
RMS
P o
= 0.95 W
, R
L
RMS
, R
= 4 Ω (with LC output filter)
L
= 8 Ω (with LC output filter)
Power supply rejection ratio with inputs grounded, C in
= 1 µF
(3) f = 217 Hz, R
L f = 217 Hz, R
L
= 8 Ω, Gain = 6 dB , V ripple
= 200 mV pp
= 8 Ω, Gain = 12 dB , V ripple
= 200 mV pp
CMRR Common mode rejection ratio 20 Hz < f < 20 kHz
2.1
10
1.6
0.95
1.95
1.1
0.45
85
90
63
60
3
1000
25 mA nA mV
W
%
% dB
60 dB
Gain
Gain value
G
S
= 0 V
G
S
= V
CC
Single input impedance
(4)
Z in
F
PWM
Pulse width modulator base frequency
SNR t
WU
Signal-to-noise ratio (A-weighting)
Po=1.2 W, R
L
=4 Ω (with LC output filter)
Wake-up time
11.5
5.5
68
190
12
6
75
280
93
5
12.5
6.5
82
370
10 dB k Ω kHz dB ms
Standby time 5 ms t
STBY
Output voltage noise f = 20 Hz to 20 kHz, R
L
=4
Ω
Unweighted (Filterless, G=6 dB) 72
A-weighted (Filterless, G=6 dB) Obsolete Product(s) - Obsolete Product(s)
V
N
A-weighted (with LC output filter, G=6 dB)
50
68
49
μ V
RMS
Unweighted (Filterless, G=12 dB) 93
A-weighted (Filterless, G=12 dB) 65
Unweighted (with LC output filter, G=12 dB)
A-weighted (with LC output filter, G=12 dB)
85
64
1.
All electrical values are guaranteed with correlation measurements at 2.4 V and 5 V.
2.
Standby mode is active when V
STBY
is tied to GND.
3.
Dynamic measurements - 20*log(rms(V out
)/rms(V ripple
)). V ripple
is the superimposed sinus signal to V
CC
@ f = 217 Hz.
4.
Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
8/29 Doc ID 13123 Rev 4
TS2007 Electrical characteristics
Table 7.
Symbol
V
CC
= +3.6 V, GND = 0 V, V ic
=1.8 V, T amb
= 25 °C (unless otherwise specified)
(1)
Parameter Min.
Typ.
Max.
Unit
I
I
CC
CC-STBY
V
P oo o
THD + N
Efficiency
PSRR
CMRR
Supply current
No input signal, no load
Standby current
(2)
No input signal, V
STBY
= GND
Output offset voltage
Floating inputs, R
L
= 8 Ω
Output power
THD+N = 1% max, f = 1 kHz, R
L
THD+N = 1% max, f = 1 kHz, R
L
= 4 Ω
= 8 Ω
THD = 10% max, f = 1 kHz, R
L
THD = 10% max, f = 1 kHz, R
L
= 4 Ω
= 8 Ω
Total harmonic distortion + noise
P o
= 500 mW
RMS
, G = 6 dB, f = 1 kHz, R
L
= 8 Ω
Efficiency
P o
= 1.1 W
RMS
P o
= 0.65 W
, R
L
RMS
, R
= 4 Ω (with LC output filter)
L
= 8
Ω
(with LC output filter)
Power supply rejection ratio with inputs grounded, C in
=1 µF
(3) f = 217 Hz, R
L f = 217 Hz, R
L
= 8
Ω,
Gain = 6 dB
,
V ripple
= 200 mV pp
= 8 Ω, Gain = 12 dB , V ripple
= 200 mV pp
Common mode rejection ratio 20 Hz < f < 20 kHz
Gain
Gain value
G
S
= 0 V
G
S
= V
CC
Single input impedance
(4)
Z in
F
PWM
Pulse width modulator base frequency
SNR
Signal-to-noise ratio (A-weighting)
Po = 0.9 W, R
L
= 4 Ω (with LC output filter)
Wake-up time t
WU t
STBY
Standby time
Output voltage noise f = 20 Hz to 20 kHz, R
L
=4 Ω
Unweighted (Filterless, G=6 dB)
11.5
5.5
68
190
2
10
1.1
0.65
1.4
0.85
0.3
84
90
63
60
60
12
6
75
280
92
5
5
2.8
1000
25
12.5
6.5
82
370
10
V
N
A-weighted (with LC output filter, G=6 dB)
Unweighted (Filterless, G=12 dB)
A-weighted (Filterless, G=12 dB)
Unweighted (with LC output filter, G=12 dB)
A-weighted (with LC output filter, G=12 dB)
72
50
68
49
93
65
85
64
1.
All electrical values are guaranteed with correlation measurements at 2.4 V and 5 V.
2.
Standby mode is active when V
STBY
is tied to GND.
3.
Dynamic measurements - 20*log(rms(V out
)/rms(V ripple
)). V ripple
is the superimposed sinus signal to V
CC
@ f = 217 Hz.
4.
Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
mA nA mV
W
%
% dB dB dB k Ω kHz dB ms ms
μ V
RMS
Doc ID 13123 Rev 4 9/29
Electrical characteristics TS2007
Table 8.
Symbol
V
CC
= +3.0 V, GND = 0 V, V ic
=1.5 V, T amb
= 25 °C (unless otherwise specified)
(1)
Parameter Min.
Typ.
Max.
Unit
I
I
CC
CC-STBY
Supply current
No input signal, no load
Standby current
(2)
No input signal, V
STBY
= GND
V
P oo o
THD + N
Output offset voltage
Floating inputs, R
L
= 8 Ω
Output power
THD+N = 1% Max, f = 1 kHz, R
L
THD+N = 1% Max, f = 1 kHz, R
L
= 4 Ω
= 8 Ω
THD = 10% Max, f = 1 kHz, R
THD = 10% Max, f = 1 kHz, R
L
= 4 Ω
L
= 8 Ω
Total harmonic distortion + noise
P o
= 400 mW
RMS
, G = 6 dB, f = 1 kHz, R
L
= 8 Ω
Efficiency
PSRR
Efficiency
P o
= 0.75 W
RMS
, R
P o
= 0.45 W
RMS
, R
L
= 4 Ω (with LC output filter)
L
= 8 Ω (with LC output filter)
Power supply rejection ratio with inputs grounded, C in
= 1 µF
(3) f = 217 Hz, R f = 217 Hz, R
L
= 8 Ω, Gain=6 dB , V ripple
= 200 mV pp
L
= 8 Ω, Gain=12 dB , V ripple
= 200 mV pp
CMRR Common mode rejection ratio 20 Hz < f < 20 kHz
Gain
Gain value
G
S
= 0 V
G
S
= V
CC
Single input impedance
(4)
Z in
F
PWM
Pulse width modulator base frequency
SNR
Signal-to-noise ratio (A-weighting)
Po = 0.6 W, R
L
= 4 Ω (with LC output filter)
Wake-up time t
WU t
STBY
Standby time
Output voltage noise f = 20 Hz to 20 kHz, R
L
=4 Ω
Unweighted (Filterless, G=6 dB)
11.5
5.5
68
190
1.9
10
0.75
0.45
1
0.6
0.5
83
90
63
60
60
12
6
75
280
90
5
5
2.7
1000
25
12.5
6.5
82
370
10
V
N
A-weighted (with LC output filter, G=6 dB)
Unweighted (Filterless, G=12 dB)
A-weighted (Filterless, G=12 dB)
Unweighted (with LC output filter, G=12 dB)
A-weighted (with LC output filter, G=12 dB)
71
50
67
49
92
65
85
64
1.
All electrical values are guaranteed with correlation measurements at 2.4 V and 5 V.
2.
Standby mode is active when V
STBY
is tied to GND.
3.
Dynamic measurements - 20*log(rms(V out
)/rms(V ripple
)). V ripple
is the superimposed sinus signal to V
CC
@ f = 217 Hz.
4.
Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
mA nA mV
W
%
% dB dB dB k
Ω kHz dB ms ms
μ V
RMS
10/29 Doc ID 13123 Rev 4
TS2007 Electrical characteristics
Table 9.
Symbol
V
CC
= +2.4 V, GND = 0 V, V ic
=1.2 V, T amb
= 25 °C (unless otherwise specified)
Parameter Min.
Typ.
Max.
Unit
I
CC-STBY
THD + N
Efficiency
PSRR
CMRR
F
PWM t
Gain
SNR t
I
CC
V
P
Z oo o in
WU
STBY
Supply current
No input signal, no load
Standby current
(1)
No input signal, V
STBY
= GND
Output offset voltage
Floating inputs, R
L
= 8 Ω
Output power
THD+N = 1% Max, f = 1 kHz, R
L
THD+N = 1% Max, f = 1 kHz, R
L
= 4 Ω
= 8 Ω
THD = 10% Max, f = 1 kHz, R
L
THD = 10% Max, f = 1 kHz, R
L
= 4 Ω
= 8 Ω
Total harmonic distortion + noise
P o
= 200 mW
RMS
, G = 6 dB, f = 1 kHz, R
L
= 8 Ω
Efficiency
P o
= 0.38 W
RMS
, R
P o
= 0.25 W
RMS
, R
L
= 4 Ω (with LC output filter)
L
= 8
Ω
(with LC output filter)
Power supply rejection ratio with inputs grounded, C in
= 1 µF
(2) f = 217 Hz, R
L f = 217 Hz, R
L
= 8
Ω,
Gain=6 dB
,
V ripple
= 200 mV pp
= 8 Ω, Gain=12 dB , V ripple
= 200 mV pp
Common mode rejection ratio 20 Hz < f < 20 kHz
Gain value
G
S
= 0 V
G
S
= V
CC
Single input impedance
(3)
Pulse width modulator base frequency
Signal-to-noise ratio (A-weighting)
Po=0.4 W, R
L
=4 Ω (with LC output filter)
Wake-up time
Standby time
Output voltage noise f = 20 Hz to 20 kHz, R
L
= 4 Ω
Unweighted (filterless, G=6 dB)
11.5
5.5
68
190
1.7
10
0.48
0.3
0.6
0.36
0.1
82
90
63
60
60
12
6
75
280
88
5
5
2.4
1000
25
12.5
6.5
82
370
10
V
N
A-weighted (with LC output filter, G=6 dB)
Unweighted (filterless, G=12 dB)
A-weighted (filterless, G=12 dB)
Unweighted (with LC output filter, G=12 dB)
A-weighted (with LC output filter, G=12 dB)
70
50
66
49
91
65
84
64
1.
Standby mode is active when V
STBY
is tied to GND.
2.
Dynamic measurements - 20*log(rms(V out
)/rms(V ripple
)). V ripple
is the superimposed sinus signal to V
CC
@ f = 217 Hz.
3.
Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
mA nA mV
W
%
% dB dB dB k Ω kHz dB ms ms
μ V
RMS
Doc ID 13123 Rev 4 11/29
Electrical characteristics
3.2
TS2007
Electrical characteristic curves
The graphs shown in this section use the following abbreviations:
●
●
R
L
+ 15 µH or 30 µH = pure resistor + very low series resistance inductor
Filter = LC output filter (1 µF+30 µH for 4 Ω and 0.5 µF+60 µH for 8 Ω )
All measurements are done with C
S1
=1 µF and C
S2
, except for the
PSRR where C
S1 is removed (see
Figure 2.
Test diagram for measurements
VCC
Cs1
1 F
Cs2
100nF
Cin
Cin
GND
In+
Out+
In-
TS2007
Out-
GND or
LC Filter
GND
Audio Measurement
Bandwith < 30kHz
RL
4 or 8 Ω
5th order
50kHz low-pass filter
Figure 3.
Test diagram for PSRR measurements
VCC
Cs2
100nF
20Hz to 20kHz
Vripple
Vcc
GND GND
RL
Cin
In+
Out+
4 or 8
Obsolete Product(s) - Obsolete Product(s)
TS2007 or
Ω
5th order
50kHz low-pass filter
In-
LC Filter
Out-
Cin
1 F
GND GND
5th order
50kHz low-pass filter reference
RMS Selective Measurement
Bandwith =1% of Fmeas
12/29 Doc ID 13123 Rev 4
TS2007
Table 10.
Index of graphics
Description
Current consumption vs. power supply voltage
Current consumption vs. standby voltage
Efficiency vs. output power
Output power vs. power supply voltage
PSRR vs. common mode input voltage
PSRR vs. frequency
CMRR vs. common mode input voltage
CMRR vs. frequency
Gain vs. frequency
THD+N vs. output power
THD+N vs. frequency
Power derating curves
Startup and shutdown time
Electrical characteristics
Figure
,
,
Obsolete Product(s) - Obsolete Product(s)
Doc ID 13123 Rev 4 13/29
Electrical characteristics TS2007
Figure 4.
Current consumption vs. power supply voltage
3.0
2.5
T
AMB
=25°C
No Loads
2.0
1.5
1.0
0.5
0.0
2 3 4
Power Supply Voltage (V)
5
Figure 5.
Current consumption vs. standby voltage
2.5
2.0
1.5
1.0
0.5
0.0
0 1
V
CC
=2.4V
2 3
Standby Voltage (V)
V
CC
=5V
V
CC
=3.6V
No Load
T
AMB
=25°C
4 5
Figure 6.
Efficiency vs. output power Figure 7.
Efficiency vs. output power
100 200
Efficiency
80 160
60
40
20
0
0.0
0.1
120
Power
Dissipation
80
0.2
0.3
0.4
0.5
Output Power (W)
Vcc=3V
RL=4 Ω + ≥ 15 μ H
F=1kHz
THD+N ≤ 1%
0.6
0.7
40
0.8
0
100
80
60
40
20
0
0.0
Efficiency
0.5
200
Power
Dissipation
1.0
1.5
Output Power (W)
Vcc=5V
RL=4 Ω + ≥ 15 μ H
F=1kHz
THD+N ≤ 1%
2.0
100
2.5
0
500
400
300
Figure 8.
Efficiency vs. output power
100
80
40
20
0
0.0
50
Efficiency
0.1
40
30
Power
Dissipation
20
0.2
0.3
Output Power (W)
Vcc=3V
RL=8 Ω + ≥ 15 μ H
F=1kHz
THD+N ≤ 1%
0.4
10
0.5
0
Figure 9.
Efficiency vs. output power
100 125
80
60
40
20
0
0.0
0.2
Efficiency
100
75
Power
Dissipation
50
0.4
0.6
0.8
Output Power (W)
Vcc=5V
RL=8 Ω + ≥ 15 μ H
F=1kHz
THD+N ≤ 1%
1.0
1.2
25
1.4
0
14/29 Doc ID 13123 Rev 4
TS2007 Electrical characteristics
Figure 10.
Output power vs. power supply voltage
3.5
3.0
2.5
RL = 4 Ω + ≥ 15 μ H
F = 1kHz
BW < 30kHz
Tamb = 25 ° C
2.0
THD+N=10%
1.5
1.0
0.5
0.0
2 3 4
THD+N=1%
Power Supply Voltage (V)
5 6
Figure 11.
Output power vs. power supply voltage
2.0
1.6
RL = 8 Ω + ≥ 15 μ H
F = 1kHz
BW < 30kHz
Tamb = 25 ° C
1.2
THD+N=10%
0.8
0.4
0.0
2
THD+N=1%
3 4
Power Supply Voltage (V)
5 6
Figure 12.
PSRR vs. common mode input voltage
0
-10
-20
-30
-40
-50
Vripple = 200mVpp, F = 217Hz, G = 6dB
RL ≥ 4 Ω +
Vcc=2.4V
≥ 15 μ H, Tamb = 25
Vcc=3V
° C
Vcc=3.6, 4.2, 5V
-60
-70
-80
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Common Mode Input Voltage (V)
Figure 13.
PSRR vs. frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
20
Inputs grounded, Vripple = 200mVpp,
V
CC
=5V, R
L
=4 Ω +15 μ H, C
IN
=1 μ F, T
AMB
=25°C
Gain=6dB
100
Gain=12dB
1k
Frequency (Hz)
10k 20k
Figure 14.
PSRR vs. frequency
0
-10
-20
Inputs grounded, Vripple = 200mVpp
A
V
=6dB, R
L
=4 Ω +15 μ H, C
IN
=1 μ F, T
AMB
=25°C
-40
-50
-60
-70
-80
20
Vcc=2.4, 3, 3.6, 4.2, 5V
100 1k
Frequency (Hz)
10k 20k
Figure 15.
PSRR vs. frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
20
Inputs grounded, Vripple = 200mVpp
A
V
=6dB, R
L
=4 Ω +30 μ H, C
IN
=1 μ F, T
AMB
=25°C
Vcc=2.4, 3, 3.6, 4.2, 5V
100 1k
Frequency (Hz)
10k 20k
Doc ID 13123 Rev 4 15/29
Electrical characteristics TS2007
Figure 16.
PSRR vs. frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
20
Inputs grounded, Vripple = 200mVpp
A
V
=6dB, R
L
=8 Ω +15 μ H, C
IN
=1 μ F, T
AMB
=25°C
Vcc=2.4, 3, 3.6, 4.2, 5V
100 1k
Frequency (Hz)
10k 20k
Figure 17.
PSRR vs. frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
20
Inputs grounded, Vripple = 200mVpp
A
V
=6dB, R
L
=8 Ω +30 μ H, C
IN
=1 μ F, T
AMB
=25°C
Vcc=2.4, 3, 3.6, 4.2, 5V
100 1k
Frequency (Hz)
10k 20k
Figure 18.
CMRR vs. common mode input voltage
0
-10
-20
-30
-40
-50
Δ Vicm=200mVpp, F = 217Hz, G=6dB
RL ≥ 4 Ω + ≥ 15 μ H, T
AMB
Vcc=2.4V
=25°C
Vcc=3V
Vcc=3.6, 4.2, 5V
-60
-70
-80
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Common Mode Input Voltage (V)
Figure 19.
CMRR vs. frequency
0
-10
Δ Vicm=200mVpp, V
CC
=5V
R
L
=4 Ω +15 μ H, C
IN
=1 μ F, T
AMB
=25°C
-20
-30
-40
-50
Gain=12dB
-60
-70
-80
20 100
Gain=6dB
1k
Frequency (Hz)
10k 20k
Figure 20.
CMRR vs. frequency Figure 21.
CMRR vs. frequency
0
-10
Δ Vicm=200mVpp, G=6dB
R
L
= 4 Ω +15 μ H, C
IN
=1 μ F, T
AMB
=25°C
0
-10
Δ Vicm=200mVpp, G=6dB
R
L
= 4 Ω +30 μ H, C
IN
=1 μ F, T
AMB
=25°C
-20 -20
-30 -30 Obsolete Product(s) - Obsolete Product(s)
-40
Vcc=2.4, 3, 3.6, 4.2, 5V
-40
Vcc=2.4, 3, 3.6, 4.2, 5V
-50 -50
-60
-70
-80
20 100 1k
Frequency (Hz)
10k 20k
-60
-70
-80
20 100 1k
Frequency (Hz)
10k 20k
16/29 Doc ID 13123 Rev 4
TS2007
Figure 22.
CMRR vs. frequency
0
-10
-20
-30
-40
-50
-60
-70
-80
20
Δ Vicm=200mVpp, G=6dB
R
L
= 8 Ω +15 μ H, C
IN
=1 μ F, T
AMB
=25°C
Vcc=2.4, 3, 3.6, 4.2, 5V
100 1k
Frequency (Hz)
Figure 24.
Gain vs. frequency
8 no load
6
Electrical characteristics
10k 20k
Figure 23.
CMRR vs. frequency
0
-10
Δ Vicm=200mVpp, G=6dB
R
L
= 8 Ω +30 μ H, C
IN
=1 μ F, T
AMB
=25°C
-20
-30
-40
-50
Vcc=2.4, 3, 3.6, 4.2, 5V
-60
-70
-80
20 100 1k
Frequency (Hz)
Figure 25.
Gain vs. frequency
14
no load
12
10k 20k
4
2
0
20
Gain = 6dB
Vin = 500 mVpp
T
AMB
= 25 ° C
100
RL=8 Ω +15 μ H
RL=8 Ω +30 μ H
RL=4 Ω
1k
+15
Frequency (Hz)
μ
RL=4
H
Ω +30 μ H
10k 20k
10
RL=8 Ω +15 μ H
RL=8 Ω +30 μ H
8
6
20
Gain = 12dB
Vin = 500 mVpp
T
AMB
= 25 ° C
100
RL=4 Ω
1k
Frequency (Hz)
+15 μ
RL=4
H
Ω +30 μ H
10k 20k
Figure 26.
THD+N vs. output power Figure 27.
THD+N vs. output power
10 10
Vcc=5V
Vcc=5V RL = 4 Ω + 15 μ H
F = 1kHz
RL = 4 Ω + 30 μ H
F = 1kHz
G = 6dB Vcc=3.6V
G = 6dB
Vcc=3.6V
BW < 30kHz BW < 30kHz
Tamb = 25 ° C
Vcc=2.4V
Tamb = 25 ° C
Vcc=2.4V
1 1
Obsolete Product(s) - Obsolete Product(s)
0.1
0.1
1E-3 0.01
0.1
Output Power (W)
1 3 1E-3 0.01
0.1
Output Power (W)
1 3
Doc ID 13123 Rev 4 17/29
TS2007 Electrical characteristics
Figure 28.
THD+N vs. output power
10
1
RL = 8 Ω + 15 μ H
F = 1kHz
G = 6dB
BW < 30kHz
Tamb = 25 ° C
Vcc=5V
Vcc=3.6V
Vcc=2.4V
Figure 29.
THD+N vs. output power
10
1
RL = 8 Ω + 30 μ H
F = 1kHz
G = 6dB
BW < 30kHz
Tamb = 25 ° C
Vcc=5V
Vcc=3.6V
Vcc=2.4V
0.1
0.1
1E-3 0.01
0.1
Output Power (W)
Figure 30.
THD+N vs. output power
10
1
RL = 4 Ω + 15 μ H
F = 100Hz
G = 6dB
BW < 30kHz
Tamb = 25 ° C
Vcc=5V
Vcc=3.6V
Vcc=2.4V
1 2 1E-3 0.01
0.1
Output Power (W)
Figure 31.
THD+N vs. output power
10
1
RL = 4 Ω + 30 μ H
F = 100Hz
G = 6dB
BW < 30kHz
Tamb = 25 ° C
Vcc=5V
Vcc=3.6V
Vcc=2.4V
1 2
0.1
0.1
0.01
1E-3 0.01
0.1
Output Power (W)
1 3
0.01
1E-3 1 3 0.01
0.1
Output Power (W)
Figure 32.
THD+N vs. output power Figure 33.
THD+N vs. output power
10
1
RL = 8 Ω + 15 μ H
F = 100Hz
G = 6dB
BW < 30kHz
Tamb = 25 ° C
Vcc=5V
Vcc=3.6V
Vcc=2.4V
10
1
RL = 8 Ω + 30 μ H
F = 100Hz
G = 6dB
BW < 30kHz
Tamb = 25 ° C
Vcc=5V
Vcc=3.6V
Vcc=2.4V
Obsolete Product(s) - Obsolete Product(s)
0.1
0.1
0.01
1E-3 0.01
0.1
Output Power (W)
1 2
0.01
1E-3 0.01
0.1
Output Power (W)
1 2
18/29 Doc ID 13123 Rev 4
TS2007
Figure 34.
THD+N vs. frequency
10
1
RL=4 Ω + 15 μ H
G=6dB
Bw < 30kHz
Vcc=2.4V
Tamb = 25 ° C
Po=0.4W
Electrical characteristics
Figure 35.
THD+N vs. frequency
10
1
RL=4 Ω + 30 μ H
G=6dB
Bw < 30kHz
Vcc=2.4V
Tamb = 25 ° C
Po=0.4W
0.1
0.1
Po=0.2W
0.01
20 100 1000
Frequency (Hz)
Figure 36.
THD+N vs. frequency
10
1
RL=8 Ω + 15 μ H
G=6dB
Bw < 30kHz
Vcc=2.4V
Tamb = 25 ° C
Po=0.2W
10000 20k
0.01
20 100 1000
Frequency (Hz)
Po=0.2W
Figure 37.
THD+N vs. frequency
10
1
RL=8 Ω + 30 μ H
G=6dB
Bw < 30kHz
Vcc=2.4V
Tamb = 25 ° C
Po=0.2W
10000 20k
0.1
0.1
Po=0.1W
Po=0.1W
0.01
20 10000 20k
0.01
20 100 1000
Frequency (Hz)
10000 20k 100 1000
Frequency (Hz)
Figure 38.
THD+N vs. frequency Figure 39.
THD+N vs. frequency
10 10
1
RL=4 Ω + 15 μ H
G=6dB
Bw < 30kHz
Vcc=3.6V
Tamb = 25 ° C
Po=0.9W
1
RL=4 Ω + 30 μ H
G=6dB
Bw < 30kHz
Vcc=3.6V
Tamb = 25 ° C
Po=0.9W
Obsolete Product(s) - Obsolete Product(s)
0.1
0.1
Po=0.45W
Po=0.45W
0.01
20
0.01
20 100 1000
Frequency (Hz)
10000 20k 100 1000
Frequency (Hz)
10000 20k
Doc ID 13123 Rev 4 19/29
Electrical characteristics
Figure 40.
THD+N vs. frequency
10
1
RL=8 Ω + 15 μ H
G=6dB
Bw < 30kHz
Vcc=3.6V
Tamb = 25 ° C
Po=0.5W
Figure 41.
THD+N vs. frequency
10
1
RL=8 Ω + 30 μ H
G=6dB
Bw < 30kHz
Vcc=3.6V
Tamb = 25 ° C
Po=0.5W
TS2007
0.1
0.1
0.01
20 100 1000
Frequency (Hz)
Po=0.25W
10000 20k
Figure 42.
THD+N vs. frequency
10
1
RL=4 Ω + 15 μ H
G=6dB
Bw < 30kHz
Vcc=5V
Tamb = 25 ° C
Po=1.5W
0.01
20 100 1000
Frequency (Hz)
Po=0.25W
10000 20k
Figure 43.
THD+N vs. frequency
10
1
RL=4 Ω + 30 μ H
G=6dB
Bw < 30kHz
Vcc=5V
Tamb = 25 ° C
Po=1.5W
0.1
0.1
Po=0.75W
0.01
20 100 1000
Frequency (Hz)
10000 20k
0.01
20 100
Po=0.75W
1000
Frequency (Hz)
10000 20k
Figure 44.
THD+N vs. frequency Figure 45.
THD+N vs. frequency
10 10
1
RL=8 Ω + 15 μ H
G=6dB
Bw < 30kHz
Vcc=5V
Tamb = 25 ° C
Po=0.9W
1
RL=8 Ω + 30 μ H
G=6dB
Bw < 30kHz
Vcc=5V
Tamb = 25 ° C
Po=0.9W
Obsolete Product(s) - Obsolete Product(s)
0.1
0.1
Po=0.45W
Po=0.45W
0.01
20
0.01
20 100 1000
Frequency (Hz)
10000 20k 100 1000
Frequency (Hz)
10000 20k
20/29 Doc ID 13123 Rev 4
TS2007 Electrical characteristics
Figure 46.
Power derating curves Figure 47.
Startup and shutdown phase
V
CC
=5 V, G=6 dB, C grounded in
=1 µF, inputs
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
Mounted on a 4-layer PCB
No Heat sink
25 50 75 100
Ambiant Temperature ( ° C)
125 150
Figure 48.
Startup and shutdown phase
V
CC
=5 V, G=6 dB, C in
=1 µF,
V in
=1 V pp
, F=10 kHz
Figure 49.
Startup and shutdown phase
V
CC
=5 V, G=12 dB, C in
=1 µF,
V in
=1 V pp
, F=10 kHz
Obsolete Product(s) - Obsolete Product(s)
Doc ID 13123 Rev 4 21/29
Application information TS2007
The TS2007 is a monolithic fully-differential input/output class D power amplifier. The
TS2007 also includes a common-mode feedback loop that controls the output bias value to average it at V
CC
/2 for any DC common-mode input voltage. This allows the device to always have a maximum output voltage swing, and by consequence, maximize the output power. Moreover, as the load is connected differentially compared to a single-ended topology, the output is four times higher for the same power supply voltage.
●
●
The advantages of a full-differential amplifier are:
●
●
●
High PSRR (power supply rejection ratio)
High common-mode noise rejection
Virtually zero pop without additional circuitry, giving a faster startup time compared to conventional single-ended input amplifiers
Easier interfacing with differential output audio DAC
No input coupling capacitors required thanks to common-mode feedback loop
Note:
In the flat region of the frequency-response curve (no input coupling capacitor or internal feedback loop + load effect), the differential gain can be set to either 6 or 12 dB depending on the logic level of the GS pin:
GS
1
0
Gain (dB)
6 dB
12 dB
Gain (V/V)
2
4
Between the GS pin and V
CC
there is an internal 300 k
Ω
resistor. When the pin is floating the gain is 6 dB.
As explained previously, the common-mode feedback loop allows the output DC bias voltage to be averaged at V
CC
/2 for any DC common-mode bias input voltage.
Obsolete Product(s) - Obsolete Product(s)
Due to the V ic
limitation of the input stage (see Table 2: Operating conditions on page 3 ), the
common-mode feedback loop can fulfill its role only within the defined range.
4.4 Low frequency response
If a low frequency bandwidth limitation is required, it is possible to use input coupling capacitors. In the low frequency region, the input coupling capacitor C in
starts to have an effect. C in
forms, with the input impedance Z in
, a first order high-pass filter with a -3 dB cutoff
to
22/29 Doc ID 13123 Rev 4
TS2007 Application information
4.5
F
CL
=
2 π Z in
⋅ C in
So, for a desired cutoff frequency F
CL we can calculate C in
:
C in
=
2 π Z in
⋅ F
CL with F
CL
in Hz, Z in
in
Ω
and C in
in F.
The input impedance Z in
is for the whole power supply voltage range, typically 75 k
Ω
. There
is also a tolerance around the typical value (see Table 5
to
tolerance, you can also calculate tolerance of F
CL
:
● F
CLmax
=
⋅
CL
● F
CLmin
= ⋅
CL
Decoupling of the circuit
A power supply capacitor, referred to as C
S,
is needed to correctly bypass the TS2007.
The TS2007 has a typical switching frequency of 280 kHz and output fall and rise time of about 5 ns. Due to these very fast transients, careful decoupling is mandatory.
A 1 µF ceramic capacitor is enough, but it must be located very close to the TS2007 in order to avoid any extra parasitic inductance created by a long track wire. Parasitic loop inductance, in relation with di/dt, introduces overvoltage that decreases the global efficiency of the device and may cause, if this parasitic inductance is too high, a TS2007 breakdown.
In addition, even if a ceramic capacitor has an adequate high frequency ESR value, its current capability is also important. A 0603 size is a good compromise, particularly when a
4 Ω load is used.
Another important parameter is the rated voltage of the capacitor. A 1µF/6.3V capacitor used at 5 V, loses about 50% of its value. With a power supply voltage of 5 V, the decoupling value, instead of 1 µF, could be reduced to 0.5 µF. As C
S
has particular influence on the
THD+N in the medium to high frequency region, this capacitor variation becomes decisive.
In addition, less decoupling means higher overshoots which can be problematic if they reach the power supply AMR value (6 V).
4.6 Wake-up (t
wu
)
Obsolete Product(s) - Obsolete Product(s)
When the standby is released to set the device ON, there is a wait of 5 ms typically. The
TS2007 has an internal digital delay that mutes the outputs and releases them after this time in order to avoid any pop noise.
Note:
The gain increases smoothly (see Figure 49 ) from the mute to the gain selected by the GS
).
Doc ID 13123 Rev 4 23/29
Application information TS2007
Note:
4.8
4.9
When the standby command is set, the time required to put the two output stages into high impedance and to put the internal circuitry in shutdown mode, is typically 5 ms. This time is used to decrease the gain and avoid any pop noise during shutdown.
The gain decreases smoothly until the outputs are muted (see
).
Consumption in shutdown mode
Between the shutdown pin and GND there is an internal 300 k Ω resistor. This resistor forces the TS2007 to be in shutdown when the shutdown input is left floating.
However, this resistor also introduces additional shutdown power consumption if the shutdown pin voltage is not 0 V.
Referring to Table 2: Operating conditions on page 3 , with a 0.4 V shutdown voltage pin for
example, you must add 0.4V/300k = 1.3 µA in typical (0.4V/273 k = 1.46 µA in maximum) to the shutdown current specified in
Single-ended input configuration
It is possible to use the TS2007 in a single-ended input configuration. However, input coupling capacitors are needed in this configuration. The following schematic diagram shows a typical single-ended input application.
Figure 50.
Typical application for single-ended input configuration
VCC
Cs
1uF
Gain Select Control
Input Cin
Cin
4
3
GS
IN-
IN+
Gain
Select
-
+
Standby
Control
TS2007
Vcc
PWM
OUT+
H
Bridge
OUT-
8
5
Oscillator
Gnd
Speaker
Standby Control
24/29 Doc ID 13123 Rev 4
TS2007 Application information
4.10 Output filter considerations
The TS2007 is designed to operate without an output filter. However, due to very sharp transients on the TS2007 output, EMI radiated emissions may cause some standard compliance issues.
These EMI standard compliance issues can appear if the distance between the TS2007 outputs and loudspeaker terminal are long (typically more than 50 mm, or 100 mm in both directions, to the speaker terminals). As the PCB layout and internal equipment device are different for each configuration, it is difficult to provide a one-size-fits-all solution.
●
●
However, to decrease the probability of EMI issues, there are several simple rules to follow:
● Reduce, as much as possible, the distance between the TS2007 output pins and the speaker terminals.
Use a ground plane for “shielding” sensitive wires.
●
Place, as close as possible to the TS2007 and in-series with each output, a ferrite bead with a rated current of minimum 2.5 A and impedance greater than 50
Ω at frequencies above 30 MHz. If, after testing, these ferrite beads are not necessary, replace them by a short-circuit.
Allow extra footprint to place, if necessary, a capacitor to short perturbations to ground
).
Figure 51.
Ferrite chip bead placement
From TS2007 output
Ferrite chip bead to speaker about 100pF gnd
In the case where the distance between the TS2007 output and the speaker terminals is too long, it is possible to have low frequency EMI issues due to the fact that the typical operating frequency is 280 kHz. In this configuration, it is necessary to use the output filter represented in
Figure 1 on page 4 as close as possible to the TS2007.
Obsolete Product(s) - Obsolete Product(s)
Doc ID 13123 Rev 4 25/29
Package information TS2007
In order to meet environmental requirements, STMicroelectronics offers these devices in
ECOPACK
®
packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an STMicroelectronics trademark. ECOPACK specifications are available at: www.st.com
.
Figure 52.
Pinout (top view)
Figure 53.
Marking (top view)
Logo: ST
Part number: K007
Three digit date code: YWW
The dot is for marking pin 1
Figure 54.
Recommended footprint for the TS2007 DFN8 package
1.8 mm 0.8 mm
0.35 mm
Obsolete Product(s) - Obsolete Product(s)
2.2 mm
0.65 mm
1.4 mm
26/29 Doc ID 13123 Rev 4
TS2007 Package information
Figure 55.
DFN8 package mechanical data
Dimensions
Ref
D
D2
E
E2
A
A1
A3 b e
L
(1) ddd
Min
0.50
0.25
2.85
1.60
2.85
1.10
0.50
Millimeters
Typ
0.60
0.02
0.30
3.00
1.70
3.00
1.20
0.65
0.55
Max
3.15
1.80
3.15
1.30
0.65
0.05
0.22
0.35
0.60
0.08
Min
19.6
9.8
112.2
63
112.2
43.3
19.6
S EATING
PLANE
C
Mils
Typ
23.6
0.8
11.8
118.1
66.9
118.1
47.2
25.5
21.6
Max
124
70.8
124
51.2
25.6
1.9
8.6
13.8
23.6
3.1
D e
1 2 3 4
Obsolete Product(s) - Obsolete Product(s)
8 7 5 6 b
Note:
D2
1.
The dimension of L is not compliant with JEDEC MO-248 which recommends 0.40 mm +/-0.10 mm.
The DFN8 package has an exposed pad E2 x D2. For enhanced thermal performance, the exposed pad must be soldered to a copper area on the PCB, acting as a heatsink. This copper area can be electrically connected to pin 7 or left floating.
Doc ID 13123 Rev 4 27/29
Ordering information TS2007
Table 11.
Order code
Part number
TS2007IQT
Temperature range
-40 °C, +85 °C
Package
DFN8
Marking
K07
Date
11-Jan-2007
11-May-2007
24-May-2007
02-May-2011
Revision
1
2
3
4
Changes
Initial release (preliminary data).
First complete datasheet. This release of the datasheet includes electrical characteristics curves and application information.
Corrected error in Table 4: Pin descriptions : descriptions of pin 5 and pin
8 were inverted.
Added minimum R
L
to
Table 1: Absolute maximum ratings
Obsolete Product(s) - Obsolete Product(s)
28/29 Doc ID 13123 Rev 4
TS2007
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