LA42102 Datasheet, PDF (3/8 Pages) Sanyo Semicon Device – Monolithic Linear IC Audio Output for TV application 10W × 2ch Power Amplifier

Block Diagram
LA42102
Standby
5
VCC
7
IN1 2
MUTE 6
PRE
GND
3
IN2 4
Input amplifier
Ri=
30kΩ
Output amplifier
12 +OUT1
11 -OUT1
VCC/ground _{shorting protection circuit}
Load shorting protection circuit
Thermal protection circuit
10
PWR
GND
Ri=
30kΩ
Input amplifier
Output amplifier
8 +OUT2
9 -OUT2
Test Circuit
1
Ripple
Filter
LA42102
Ripple
PRE
Filter IN1 GND
1
C3 ₊
47µF
/25V
2
3
C1
* 4.7µF
/10V
PWR
IN2 STBY MUTE VCC +OUT2 -OUT2 GND -OUT1 +OUT1 N.C.
4
5
6
C4
10µF
C2
/10V
* 4.7µF
+
/10V
R1
15kΩ
7
8
9
10
C5
1000µF
/25V
RL
+
C8 C9
0.1µF 0.1µF
R4 R5
2.2Ω 2.2Ω
11
12
13
RL
C7
0.1µF
R3
2.2Ω
C6
0.1µF
R2
2.2Ω
+5V
PCA00898
* LA42102 employs the zero-bias type input circuit, with the input pin potential being nearly zero (about 0.01V).
Accordingly, the polarity must be determined according to the DC potential of a circuit connected to the previous stage
of LA42102.
No.A0494-3/8