ST TDA7376PD User Manual

2 x 35 W power amplifier for car radio
Features
High output power capability:
– 2 x 40 W max./4 Ω –2 x 35 W/4 Ω EIAJ –2 x 25 W/4 Ω @14.4 V, 1 kHz, 10 % –2 x 25 W/2 Ω @14.4 V, 1 kHz, 10 %
2 Ω 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

Table 1. Device summary

TDA7376PD
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.
Order code Package Packing
TDA7376PD PowerSO36 Tube
TDA7376PDTR PowerSO36 Tape and reel
December 2009 Doc ID 10260 Rev 3 1/14
www.st.com
1
Contents TDA7376PD
Contents
1 Block and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 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
3 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2/14 Doc ID 10260 Rev 3
TDA7376PD List of tables
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Doc ID 10260 Rev 3 3/14
List of figures TDA7376PD
List of figures
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 3
TDA7376PD Block and pins connection diagrams

1 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
36
35
34
33
32
31
30
29
28
26
25
23
22
21
20
19
D02AU1348
Doc ID 10260 Rev 3 5/14
1
2
3
4
5
6
7
8
9
1027
11
12
1324
14
15
16
17
18
TAB
TAB
PWGND
PWGND
NC
OUT1+
OUT1+
NC
OUT1-
OUT1-
VCC
VCC
IN1+
IN1-
NC
NC
MUTE
ST-BY
SGND
Electrical specifications TDA7376PD

2 Electrical specifications

2.1 Absolute maximum ratings

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit
V
V
V
peak
Operating supply voltage 18 V
OP
DC supply voltage 28 V
s
Peak supply voltage (t = 50 ms) 50 V
Output peak current (not repetitive t = 100 μs) 8 A
I
O
Output peak current (repetitive f > 10 Hz) 6 A
P
T
stg
Power dissipation T
tot
, TjStorage and junction temperature -40 to 150 °C
= 85°C 36 W
case

2.2 Thermal data

Table 3. Thermal data

Symbol Parameter Value Unit
R
th j-case
Thermal resistance junction-to-case Max 2 °C/W

2.3 Electrical characteristics

Refer to the test circuits Figure 15 and 16, VS = 14.4 V; RL = 4 Ω; f = 1 kHz; T unless otherwise specified.

Table 4. Electrical characteristics

= 25 °C,
amb
Symbol Parameter Test condition Min. Typ. Max. Unit
V
V
P
P
O max
P
O EIAJ
THD Distortion
C
Supply voltage range - 8 - 18 V
S
Total quiescent drain current RL = --200mA
I
d
Output offset voltage - - - 120 mV
OS
Output power
O
Max. output power
EIAJ output power
Cross talk
T
(1)
(1)
THD = 10 %; THD = 10 %; R
= 2 Ω
L
23 33
-3640-W
VS = 13.7 V 32 35 - W
P
= 0.5 to 10 W
O
PO = 0.5 to 15 W
f = 1 kHz; R f = 10 kHz; R
g
g
-
-
25 37
0.03
0.08
80 70
-W
-%
-dB
6/14 Doc ID 10260 Rev 3
TDA7376PD Electrical specifications
Table 4. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
R
Input impedance
IN
differential input Single Ended input
45 40
--kΩ
differential input 25 26 27 dB
G
ΔG
E
SVR Supply voltage rejection
Voltage gain
V
Channel gain balance - - - 1 dB
V
Input noise voltage
IN
Single Ended input 25 26 27 dB
R
= 600 Ω; "A" weighted
g
= 600 Ω; 22 Hz to 33 kHz
R
g
f = 100 Hz; V f = 10 Hz; V
= 1 Vrms; Rg = 0;
r
= 1 Vrms; Rg = 0;
r
-
45
3 46
55
-dB
BW Power bandwidth (-3dB) 75 - - kHz
CMRR Common mode rejection ratio VCM = 1 Vrms input referred 60 - - dB
A
V
SB IN
V
SB OUT
I
A
V
M IN
V
M OUT
D
D
DOUT
1. Saturated square wave output
2. See Figure 3 for THD setting.
Standby attenuation VSB = 1.5V; P
SB
Standby input threshold - - - 1.5 V
Standby output threshold - 3.5 - - V
Standby current consumption VSB = 0V - - 20 μA
sb
Mute attenuation VM = 1.5 V; P
M
Mute in threshold - - - 1.5 V
Mute out threshold - 3.5 - - V
I
Mute pin current V6 = 0 to VS,; V
6
Distortion detection level
DL
Distortion detector output DC current
(2)
-3.5--%
Output low, sinked current
(V
= 1.5 V)
pin10
Output high, leakage current
= VS, @ V
(V
pin10
= 1 W 80 90 dB
O ref
= 1 W - 85 - dB
Oref
= 18 V - - 100 μA
S max.
1--mA
Smax
= 18 V)
--10μA
μV
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
) when the total harmonic distortion of the output signal reaches the
DOUT
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
. The actual voltage can be
CC
computed by multiplying the fraction corresponding to the desired THD threshold by the application’s supply voltage.
Doc ID 10260 Rev 3 7/14
Electrical specifications TDA7376PD
(V)
(V)

2.4 Electrical characteristics curves

VS = 14.4V R
= 4
L
f = 1KHz
Po ( W)
f= 1 KHz
THD= 1 %
voltage
Ω
(THD = 1 %)
Vs
RL= 2
Ω
RL= 4
Figure 4. Quiescent current vs. supply volt-
age
RL = 4
Ω
Figure 6. Output power vs. supply voltage
(THD = 10 %)
Po ( W)
55 50
f= 1 KHz
45
THD= 10 %
40 35 30 25
Ω
20 15 10
5
8 9 10 11 12 13 14 15 16 17 18
RL= 2
Vs
Figure 3. Clip detector threshold vs. THD set.
Figure 5. Output power vs. supply voltage
45
40
35
30
25
20
15
10
5
8 9 10 11 12 13 14 15 16 17 18
Figure 7. EIAJ power vs. supply voltage Figure 8. THD vs. frequency
Ω
RL= 4
Ω
f = 1KHz
= 2.5Vrms
V
i
RL = 3.2
Ω
RL = 4
Ω
8/14 Doc ID 10260 Rev 3
VS = 14.4V
= 4
R
Ω
L
= 12W
P
O
f (Hz)
TDA7376PD Electrical specifications
Figure 9. THD vs. output power (RL = 4 Ω) Figure 10. THD vs. output power (RL = 24 Ω)
10
1
TH D (%)
Vs = 14.4 V
R L = 4
Ω
f= 10 KHz
10
1
THD (%)
Vs= 14.4 V
R L = 2
Ω
f = 10 KHz
0.1
f = 1 KHz
0.01
0.1 1 10 Po ( W)
Figure 11. Dissipated power and efficiency vs.
0.1
0.01
0.1 1 10
f= 1 KHz
Po ( W)

Figure 12. SVR vs. frequency

output power
VS = 14.4V R
= 4
Ω
L
f = 1KHz
VS = 14.4V
= 4
R
Ω
L
= 1Vrms
V
r
Ri = 0
Ri = 600
f (Hz)
Ω
Ω

Figure 13. CMRR vs. frequency Figure 14. Crosstalk vs. frequency

VS = 14.4V
= 4
R
Ω
L
= 1Vrms
V
i
f (Hz)
Doc ID 10260 Rev 3 9/14
VS = 14.4V
= 4
R
Ω
L
= 1W
P
O
= 0
R
L
f (Hz)
Electrical specifications TDA7376PD

2.5 Test and application circuits

Figure 15. Differential inputs test and application circuit

Figure 16. Single ended inputs test and application circuit

10/14 Doc ID 10260 Rev 3
TDA7376PD Electrical specifications

Figure 17. Application board reference circuit

Doc ID 10260 Rev 3 11/14
Package information TDA7376PD

3 Package information

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

DIM.
A 3.270 - 3.410 0.1287 - 0.1343 A2 3.100 - 3.180 0.1220 - 0.1252 A4 0.800 - 1.000 0.0315 - 0.0394 A5 - 0.200 - - 0.0079 ­a1 0.030 -
b 0.220 - 0.380 0.0087 - 0.0150
c 0.230 - 0.320 0.0091 - 0.0126
D 15.800 - 16.000 0.6220 - 0.6299 D1 9.400 - 9.800 0.3701 - 0.3858 D2 - 1.000 - - 0.0394 -
E 13.900 - 14.500 0.5472 - 0.5709 E1 10.900 - 11.100 0.4291 - 0.4370 E2 - - 2.900 - - 0.1142 E3 5.800 - 6.200 0.2283 - 0.2441 E4 2.900 - 3.200 0.1142 - 0.1260
e - 0.650 - - 0.0256 ­e3 - 11.050 - - 0.4350 -
G 0 - 0.075 0 - 0.0031
H 15.500 - 15.900 0.6102 - 0.6260
h - - 1.100 - - 0.0433
L 0.800 - 1.100 0.0315 - 0.0433
N - - 10˚ - - 10˚
s - -8˚- -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.
mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
-0.040
0.0012 - -0.0016
OUTLINE AND
MECHANICAL DATA
PowerSO36 (SLUG UP)
12/14 Doc ID 10260 Rev 3
7183931 G
TDA7376PD Revision history

4 Revision history

Table 5. Document revision history

Date Revision Changes
13-Dec-2003 1 Initial release.
16-Apr-2004 2 Corrected package drawing.
11-Dec-2009 3
Document reformatted. Updated Section 3: Package information on page 12.
Doc ID 10260 Rev 3 13/14
TDA7376PD
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14/14 Doc ID 10260 Rev 3
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