IC001, Audio AMP
IC1251 Video and Audio Select
V
DD
16
A
10
B
9
INH
6
8
V
SS
IC BLOCK DIAGRAMS
Standby
6
Input Amplifier
3
IN 1
Ri=
30k Ω
7
MUTE
PRE\
4
GND
5
IN2
Ri=
30k Ω
Input Amplifier
Vcc
9
Output Amplifier
Vcc/ground shorting protection circuit
Load shorting protection circuit
Thermal protection circuit
Output Amplifier
2
Ripple
Filter
7
V
EE
— 30 —
14
+ OUT1
13
- OUT1
PWR
11
GND
10
+ OUT 2
12
- OUT 2
13
I/O
c
O/I
12
I/O
c
O/I
14
I/O
c
O/I
15
I/O
c
O/I
11
I/O
c
O/I
1
I/O
c
O/I
5
I/O
c
O/I
2
I/O
c
O/I
4
3
X-COMMON
0X
1X
2X
3X
0Y
1Y
2Y
3Y
Y-COMMON