Sony WM-EX900 - IC Block Diagrams; IC301 TA2123 F Block Diagram; IC302 NJM2185 AV Block Diagram; IC703 XC6383 C251 ML Block Diagram

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• IC Block Diagrams
IC301 TA2123F
IC302 NJM2185AV
IC703 XC6383C251ML
+
–
+
–
AGC
DET
BST
PWC
PWB
+
–
PWA
+
–
+ –
+ –
+ –
TOMP
RIPPLE
FILTER
MIX
MTL DRV
VREF
PREA
PREB
BEEP
SW
36 35 34 33 32 31 30 29 28 27 26 25
24
22
21
20
19
18
17
16
15
14
13
23
12111098765321 4
48
47
46
45
44
43
42
41
40
39
38
37
AGC DET AGC IN BST NF BST OUT PW IN C LPF EQ L PW NF L PW IN L PW IN R PW NF R EQ R
RF IN
PW GND
PW OUT R
PW OUT C
PW OUT L
VCC
BASE
RF OUT
GND
AMS DET
AMS MIX
AMS IN
VREF IN
PRE GND
M/N SW
PRE SW
F/R SW
BST SW
PW SW
NT SW
AMS OUT
BEEP
MT TC
CAMP SW
AMS IN
PRE NF-R
PRE OUT-R
MTL DRV-R
MTL DRV-L
PRE OUT-L
PRE NF-L
REV IN-L
REV IN-R
REF OUT
FWD IN-R
FWD IN-L
+
–
+
–
BIAS
CIRCUIT
WEIGHT
G2 G1 V/I
ACH BLOCK
GM
SUN
BCH BLOCK (SAME ACH)
14 13 12 11 10 9 8
1 2 3 4 5 6 7
GND I
REF V REF INB OUT B DC B DET B
Vcc SW V
EXT IN A OUT A DC A DET A
+
–
+
–
CHIP ENABLE
V REF
VDD
2 STEP PFM CONTROL
OSC 100/180 kHz
VLx LIMITER
BUFFER
1
2
3 4
5
CE
V OUT
NC
LX
VSS