Sony ICD-ST25 - Page 25

25
ICD-ST25
• IC BLOCK DIAGRAMS
IC3001 LA7473V-TLM-E (MAIN BOARD)
IC3002 NJM2781RB1 (MAIN BOARD)
EXTNF2R EXTNF1R EXT IN-R CTL-2 MIC VCC HPFSW INT IN-R INTNFR MIXOUTR MIXINL INTOUTR GND
CTL-1
EXT IN-L
RF
INT IN-L
EXTNF1L EXTNF2L
VCC
INTNFL
INTOUTL
MIXINR
MIXOUTL
HPF IN-L
OUT-L
BIAS
SIT/MONO
HPF IN-R OUT-R INT/EXT
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
161718
192021222324252627282930
EXT MIC
DET
EXT MIC
AMP L
EXT MIC
AMP R
INT MIC
AMP L
MIX
AMP L
OUTPUT
AMP L
RIPPLE
FILTER
MIC
VCC
INT MIC
AMP R
MIX
AMP R
OUTPUT
AMP R
BIAS
ON
OFF
ON
OFF
EXT
INT
EXT
INT
1
2
3
4
8
7
6
5
REG
GND
V+
OUT
IN-
NOISE
REG
STBY
IN+