Philips TDA8571J 2002 Mar 05 10, TEST AND APPLICATION INFORMATION, Fig.7 Application circuit diagram.

2002 Mar 05 10
Philips Semiconductors Product specification
4×40 W BTL quad car radio power
amplifier TDA8571J
TEST AND APPLICATION INFORMATION
Fig.7 Application circuit diagram.
Specialcare must be taken in the PCB-layout to separate pin VDIAG from the pins IN1, IN2, IN3 and IN4to minimize the crosstalk between the clip output
and the inputs.
Toavoid switch-on plops, it is advised to keep the amplifier in the mute mode during a period of ≥150 ms (charging the input capacitors at pins IN1,
IN2, IN3 andIN4).
handbook, full pagewidth
MGM564
OUT1+
RL = 4 Ω
OUT1−
+
−
+
−
Vref
2
IN1
input 1
IN2
input 2
4
15
10
MODE
2200 µF100 nF
23
+14.4 V
1681
VP1 VP2 VP3 VP4
VP
30 kΩ
OUT2+
RL = 4 Ω
OUT2−
+
−
+
−
7
5
11
30 kΩ
211863
PGND1 PGND2 PGND3 PGND4
power ground (substrate)
OUT3+
RL = 4 Ω
OUT3−
+
−
+
−
Vref
17
IN3
SGND
TDA8571J
input 3
IN4
input 4
19
13
12
30 kΩ
OUT4+
RL = 4 Ω
OUT4−
+
−
+
−
22
20
14
30 kΩ
10 kΩ
VDIAG
+VP
DIAGNOSTIC diagnostic
output
9
470 nF
470 nF
470 nF
470 nF