Sony STR-DN1080 Service Manual page 81

• IC Block Diagrams
– MAIN Board –
IC1232 NJM41050V (TE2)
CLAMP
VIN1 1
ADVANCED
SW1 2
CORRECTION
CLAMP
VIN2 3
SW2 4
6.75MHz
CLAMP LOW-PASS
FILTER
VIN3 5
MUTE 6
NC 7
IC1236 RN5B701-0001 (DN1080: US, CND/ZA810ES)
RN5B701-0002 (DN1080: AEP, UK, AUS, TW)
LOSC
AGC AMP
FM LNA
FILTER
FRF1 1
FRF2 2
FILTER
GNDRF 3 AGC AMP
CP2 4
AGC
DET
GNDRF 5
IC1237 MM1839A33NRE
CONT 1 BIAS
CURRENT
LIMIT
–
+
VOLTAGE THERMAL
REFERENCE SHUTDOWN
GND 2
NC 3
14 NC
13 SREFV
12 VSAG
SAG
11 SREFV
10 VCC
75
9 GND
DRIVER
6dB
+
8 VOUT
–
20 19 18 17 16
CLOCK
XOSC
GENERATOR
DIGITAL SIGNAL PROCESSING
DIGITAL FM
MIXER DEMODULATOR
DIGITAL RSSI
A/D
AGC CALCULATION
CONVERTER
IMAGE STATION
CONTROL DETECTOR
A/D DIGITAL
CONVERTER FILTERS
SERIAL INTERFACE/
REGISTERS
6
5 VIN
REGULATOR
4 VOUT
15 CP1
STEREO
14 IISD
DECODER
13 LOUT
RDS
D/A
DECODER
CONVERTER
12 ROUT
IIS
GENERATOR
11 DA
7 8 9 10
IC1280 MM3411A50NRE
VDD 1
GND 2
CE 3
STR-DN1080/ZA810ES
5 VOUT
CURRENT
LIMIT
4 NC
+
VOLTAGE
REFERENCE
BIAS
Ver. 1.1
81
SYS SET