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IC508: FAN8042
Internal Block Diagram
OPIN1+
48
IN1+
1
2
IN1-
3
OUT1
IN2+
4
IN2-
5
GND
6
GND
7
OUT2
8
IN3+
9
10
IN3-
OUT3
11
12
IN4+
13
IN4-
Note.
Detailed circuit of the output power amp
From input opamp
SVCC
OPIN1-
OPOUT1
VREF
GND
47
46
45
44
14
15
16
17
OUT4
CTL
FWD REV GND
10 K
10K
Pref
10K
Vref
10K
Pref1 is almost PVCC1 / 2
Pref2 is almost PVCC2 / 2
OPIN2+
GND
OPIN2-
43
42
41
40 K
10K
10 K
40K
40K
10K
10 K
10K
10K
10 K
40K
40K
10 K
10K
40K
10 K
40K
10 K
10K
40K
40K
10 K
10 K
40K
40K
10 K
10 K
40K
S
M
+
S
W
C
18
19
20
GND SGND
MUTE123
40 K
DO+
+
40 K
40 K
+
DO-
40K
3-18
OPOUT2
PS
PVCC1
40
39
38
37
POWER
SAVE
40K
40K
40K
40K
D
-
D
MUTE123
MUTE4
TSD-M
21
22
23
24
MUTE4
TSD-M PVCC2
36
DO1+
35
DO1-
DO2+
34
DO2-
33
DO3+
32
GND
31
GND
30
DO3-
29
DO4+
28
27
DO4-
DO5+
26
25
DO5-
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