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HA13158A (IC981) : Power amp
1. Pin layout
1
2. Block diagram
2
STBY
1
IN1
11
IN2
13
IN3
IN4
23
10
UPC1228HA(IC901):Head amp
1.Terminal layout & Block diagram
AMP1
1
2
3
4
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~
23
14
18
PVCC2
INVCC
INPUTBUFFER1
INPUTBUFFER2
INPUTBUFFER3
INPUTBUFFER4
MUTE
PROTECTOR (ASO
SURGE, TSD)
12
22
AMP2
5
6
7
8
6
PVCC1
3
+
4
AMP1
-
5
7
+
8
AMP2
-
9
15
+
16
AMP3
-
17
19
+
20
AMP4
-
21
TAB
2.Pin function
Pin No.
Electrical connection
1
Input 1
2
Negative feed back 1
3
Output 1
4
Power supply; +Vcc
5
Ground
6
Output 2
7
Negative feed back 2
8
Input 2
KS-FX202
1-21
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