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IC400 TDA7440
MUXOUTL
INL
4
8
L-IN1
100K
5
L-IN2
100K
6
G
VOLUME
L-IN3
100K
7
L-IN4
100K
0/30dB
2dB STEP
3
R-IN1
100K
2
R-IN2
100K
G
VOLUME
1
R-IN3
100K
28
R-IN4
INPUT MULTIPLEXER
100K
+ GAIN
10
MUXOUTR
INR
TREBLE(L)
BIN(L)
BOUT(L)
9
18
14
15
R
B
27
SPKR ATT
TREBLE
BASS
LOUT
LEFT
21
SCL
2
I
CBUS DECODER
+ LATCHES
22
SDA
20
DIG_GND
26
SPKR ATT
TREBLE
BASS
ROUT
RIGHT
V
REF
24
V
S
SUPPLY
25
AGND
R
B
11
19
12
13
23
TREBLE(R)
BIN(R)
BOUT(R)
CREF
D98AU883
101
IC 501 / IC502 TDA7293
BUFFER DRIVER
+Vs
+PWVs
7
11
1
3
IN-
2
-
IN+
3
+
SGND
4
MUTE
10
MUTE
THERMAL
SHUTDOWN
PROTECTION
STBY
9
STBY
1
8
15
STBY-GND
-PWVs
-Vs
IC501 / IC502 TDA7294 - TDA7296
14
OUT
BOOT
12
LOADER
6
BOOTSTRAP
5
S/C
CLIP DET
102
CRKD2005
First issue 08/05
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