TDA7376PD
2 x 35 W power amplifier for car radio
Features
■
■
■
■
■
■
■
■
■
■
■
High output power capability:
– 2 x 40 W max./4
– 2 x 35 W/4
EIAJ
– 2 x 25 W/4
@14.4 V, 1 kHz, 10 %
– 2 x 25 W/2
@14.4 V, 1 kHz, 10 %
2
driving
Differential inputs
Minimum external components count
Internally fixed gain (26 dB)
Mute function (CMOS compatible)
Automute at minimum supply voltage detection
Standby function
No audible pop during mute and standby operations
Clipping detector with programmable distortion threshold
Protections:
– Short circuit (out to ground, out to supply voltage, across the load)
– Overrating chip temperature with soft thermal limiter
– Load dump voltage
– Fortuitous open ground
– Loudspeaker DC current
– ESD
PowerSO36 (Slug up)
Description
The TDA7376PD is a new technology dual bridge audio amplifier in PowerSO36 package designed for car radio applications.
Thanks to the fully complementary PNP/NPN output stage configuration the TDA7376PD delivers a rail-to-rail voltage swing with no need of bootstrap capacitors.
Differential input pairs, that will accept either single ended or differential input signals, guarantee high noise immunity making the device suitable for both car radio and car boosters applications.
The audio mute control, that attenuates the output signal of the audio amplifiers, suppresses pop on - off transients and cuts any noises coming from previous stages. The standby control, that de-biases the amplifiers, reduces the cost of the power switch. The on-board programmable distortion detector allows compression facility whenever the amplifier is overdriven, so limiting the distortion at any levels inside the presettable range.
Table 1.
Device summary
Order code
TDA7376PD
TDA7376PDTR
Package
PowerSO36
PowerSO36
Packing
Tube
Tape and reel
September 2013 Doc ID 10260 Rev 4 1/14 www.st.com
1
3
4
1
2
Contents
Contents
TDA7376PD
Block and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4
Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5
Test and application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2/14 Doc ID 10260 Rev 4
TDA7376PD
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Doc ID 10260 Rev 4 3/14
List of figures
List of figures
TDA7376PD
Figure 1.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2.
Pins connection diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3.
Clip detector threshold vs. THD set. voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 4.
Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 5.
Output power vs. supply voltage (THD = 1 %) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 6.
Output power vs. supply voltage (THD = 10 %) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 7.
EIAJ power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 8.
THD vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 9.
THD vs. output power (RL = 4 W). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 10.
THD vs. output power (RL = 24 W). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 11.
Dissipated power and efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 12.
SVR vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 13.
CMRR vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 14.
Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 15.
Differential inputs test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 16.
Single ended inputs test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 17.
Application board reference circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 18.
PowerSO36 (slug up) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 12
4/14 Doc ID 10260 Rev 4
TDA7376PD
1
Block and pins connection diagrams
Block and pins connection diagrams
Figure 1.
Block diagram
Figure 2.
Pins connection diagram (top view)
NC
PWGND
PWGND
NC
OUT2+
OUT2+
NC
OUT2-
OUT2-
VCC
VCC
IN2+
IN2-
NC
NC
CD-OUT
THDSET
NC
27
26
25
24
31
30
29
28
23
22
21
20
19
36
35
34
33
32
D02AU1348
10
11
12
13
14
15
16
17
18
6
7
8
9
3
4
5
1
2 PWGND
PWGND
NC
OUT1+
OUT1+
NC
OUT1-
OUT1-
VCC
VCC
IN1+
IN1-
NC
NC
MUTE
ST-BY
SGND
Doc ID 10260 Rev 4 5/14
Electrical specifications TDA7376PD
2.1 Absolute maximum ratings
Table 2.
Symbol
V
OP
V s
V peak
I
O
P tot
T stg
, T j
Absolute maximum ratings
Parameter
Operating supply voltage
DC supply voltage
Peak supply voltage (t = 50 ms)
Output peak current (not repetitive t = 100
s)
Output peak current (repetitive f > 10 Hz)
Power dissipation T case
= 85°C
Storage and junction temperature
Value
18
28
50
8
6
36
-40 to 150
Unit
A
A
W
C
V
V
V
Table 3.
Symbol
Thermal data
Parameter
R th j-case
Thermal resistance junction-to-case Max
Value
2
Unit
°C/W
Refer to the test circuits Figure 15
and
16 , V
S
= 14.4 V; R
L unless otherwise specified.
= 4
; f = 1 kHz; T amb
= 25 °C,
Table 4.
Symbol
V
S
I d
V
OS
P
O
P
O max
P
O EIAJ
THD
C
T
Electrical characteristics
Parameter
Supply voltage range
Total quiescent drain current
Output offset voltage
Output power
Max. output power
(1)
EIAJ output power
(1)
Distortion
Cross talk
Test condition
-
-
R
L
=
-
THD = 10 %;
THD = 10 %; R
L
= 2
V
S
= 13.7 V
P
O
= 0.5 to 10 W
P
O
= 0.5 to 15 W f = 1 kHz; R g f = 10 kHz; R g
Min.
-
23
33
36
8
-
32
-
-
Typ.
35
0.03
0.08
80
70
-
25
37
40
-
-
Max.
18
200
120
-
-
-
-
-
Unit
V mA mV
W
W
W
% dB
6/14 Doc ID 10260 Rev 4
TDA7376PD Electrical specifications
Table 4.
Symbol
Electrical characteristics (continued)
Parameter Test condition
R
IN
Input impedance differential input
Single Ended input differential input
G
V
G
E
V
IN
SVR
Voltage gain
Channel gain balance
Input noise voltage
Supply voltage rejection
Single Ended input
-
R g
= 600
; "A" weighted
R g
= 600
; 22 Hz to 33 kHz f = 100 Hz; V r
= 1 Vrms; R g
= 0; f = 10 Hz; V r
= 1 Vrms; R g
= 0;
(-3dB) BW Power bandwidth
CMRR Common mode rejection ratio V
CM
= 1 Vrms input referred
A
SB
Standby attenuation V
SB
= 1.5V; P
O ref
= 1 W
Standby input threshold V
SB IN
V
SB OUT
I sb
A
M
V
M IN
V
M OUT
Standby output threshold -
Standby current consumption V
SB
Mute attenuation
Mute in threshold
Mute out threshold
-
-
V
M
= 0V
= 1.5 V; P
Oref
= 1 W
I
6
D
DL
Mute pin current
Distortion detection level
(2)
-
V
6
= 0 to V
S
,; V
S max.
= 18 V
D
DOUT
Distortion detector output DC current
Output low, sinked current
( V pin10
= 1.5 V )
Output high, leakage current
(V pin10
= V
S
, @ V
Smax
= 18 V)
1.
Saturated square wave output
2.
See
Figure 3 for THD setting.
Min.
45
40
25
25
-
-
-
45
1
-
-
3.5
-
3.5
75
60
80
-
3.5
-
85
-
-
-
-
55
-
-
90
-
-
-
-
Typ.
-
26
26
-
3
4
Max.
-
27
27
1
Unit k
dB dB dB
V
6
-
-
-
1.5
-
20
-
1.5
-
100
-
dB kHz dB dB
V
V
A dB
V
V
A
% mA
10
A
The TDA7376PD is equipped with a programmable clipping distortion detector circuitry that allows to signal out the output stage saturation by providing a current sinking into an open collector output (D
DOUT
) when the total harmonic distortion of the output signal reaches the preset level. The desired threshold is fixed through an external divider that produces a proper voltage level across the THD set pin.
Figure 3 shows the THD detection threshold
versus the THD set voltage. Since it is essential that the THD set voltage be proportional to the supply voltage,
Figure 4 shows its value as a fraction of V
CC
. The actual voltage can be computed by multiplying the fraction corresponding to the desired THD threshold by the application’s supply voltage.
Doc ID 10260 Rev 4 7/14
Electrical specifications TDA7376PD
Figure 3.
Clip detector threshold vs. THD set. voltage
Figure 4.
Quiescent current vs. supply voltage
V
R
S
L
= 14.4V
= 4 Ω f = 1KHz
R
L
= 4
Ω
Figure 5.
Output power vs. supply voltage
(THD = 1 %)
45
Po (W)
40 f= 1 KHz RL= 2
Ω
35
30
25
THD= 1 %
20
15
10
RL= 4
Ω
5
8 9 10 11 12 13 14 15 16 17 18
Vs (V)
Figure 7.
EIAJ power vs. supply voltage
Figure 6.
Output power vs. supply voltage
(THD = 10 %)
30
25
20
15
55
Po (W)
50
45 f= 1 KHz
THD= 10 %
40
35
RL= 2
Ω
RL= 4
Ω
10
5
8 9 10 11 12 13 14 15 16 17 18
Vs (V)
Figure 8.
THD vs. frequency f = 1KHz
V i
= 2.5Vrms
V
R
S
L
= 14.4V
= 4
Ω
P
O
= 12W
R
L
= 3.2
Ω
R
L
= 4
Ω
f (Hz)
8/14 Doc ID 10260 Rev 4
TDA7376PD
Figure 9.
THD vs. output power (R
L
= 4
)
10
THD (%)
Vs = 14.4 V
R L = 4
Ω
1 f= 10 KHz
0.1
f = 1 KHz
Electrical specifications
Figure 10.
THD vs. output power (R
L
= 24
)
10
THD (%)
Vs= 14.4 V
R L = 2
Ω
1 f = 10 KHz
0.1
f= 1 KHz
0.01
0.1
1
Po (W)
10
0.01
0.1
1
Po (W)
Figure 11.
Dissipated power and efficiency vs. output power
Figure 12.
SVR vs. frequency
V
S
R
L
= 14.4V
= 4 Ω f = 1KHz
R i
= 0
Ω
R i
= 600
Ω
V
V
S r
= 14.4V
R
L
= 4
Ω
= 1Vrms
10
Figure 13.
CMRR vs. frequency
f (Hz)
Figure 14.
Crosstalk vs. frequency
V
S
= 14.4V
R
L
= 4 Ω
V i
= 1Vrms
f (Hz)
Doc ID 10260 Rev 4
V
R
L
P
S
O
= 14.4V
= 4 Ω
= 1W
R
L
= 0
f (Hz)
9/14
Electrical specifications
2.5 Test and application circuits
Figure 15.
Differential inputs test and application circuit
TDA7376PD
Figure 16.
Single ended inputs test and application circuit
10/14 Doc ID 10260 Rev 4
TDA7376PD
Figure 17.
Application board reference circuit
Electrical specifications
Doc ID 10260 Rev 4 11/14
Package information TDA7376PD
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.
Figure 18. PowerSO36 (slug up) mechanical data and package dimensions e3
G
H h
L
N s
DIM.
A
A2
A4
A5 a1 b c mm inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
3.270
3.100
-
-
3.410 0.1287
3.180 0.1220
-
-
0.1343
0.1252
0.800
-
0.030
0.220
0.230
D
D1
D2
15.800
9.400
-
E 13.900
E1 10.900
E2
E3
E4 e
-
5.800
2.900
-
-
0.200
-
-
-
-
-
1.000
-
-
-
-
-
0.650
1.000 0.0315
-
-0.040 0.0012
0.380 0.0087
0.320 0.0091
16.000 0.6220
9.800 0.3701
-
14.500 0.5472
11.100 0.4291
2.900
-
6.200 0.2283
0.0394
0.0079
-
-
-0.0016
-
-
-
-
0.0394
-
-
-
-
3.200 0.1142
-
-
0.0256
-
0.075
-
0
0.4350
-
0.0150
0.0126
0.6299
0.3858
-
0.5709
0.4370
0.1142
0.2441
0.1260
-
-
0.0031
15.500
-
0.800
-
-
-
0
11.050
-
-
-
-
-
-
15.900 0.6102
1.100
1.100 0.0315
10˚
8˚
-
-
-
-
-
-
-
-
0.6260
0.0433
0.0433
10˚
8˚
(1) “D and E1” do not include mold flash or protusions.
Mold flash or protusions shall not exceed 0.15mm (0.006”).
(2) No intrusion allowed inwards the leads.
OUTLINE AND
MECHANICAL DATA
PowerSO36 (SLUG UP)
12/14 Doc ID 10260 Rev 4
7183931 G
TDA7376PD Revision history
Table 5.
Date
Document revision history
Revision
13-Dec-2003
16-Apr-2004
11-Dec-2009
17-Sep-2013
1
2
3
4
Changes
Initial release.
Corrected package drawing.
Document reformatted.
Updated Section 3: Package information on page 12
.
Updated Disclaimer.
Doc ID 10260 Rev 4 13/14
TDA7376PD
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14/14 Doc ID 10260 Rev 4
