SA-NS510 - Sony Audio Service Manual (repair manual). Page 26

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SA-NS510
26
•  IC Block Diagrams
– MAIN Board –
IC102  PCM1808PWR
DELTA-SIGMA
MODULATOR
DELTA-SIGMA
MODULATOR
ANTIALIAS
LOW-PASS FILTER
ANTIALIAS
LOW-PASS FILTER
AGND
VCC
2
3
VDD
DGND
4
5
LRCK 7
REFERENCE
u1/64
DECIMATION
FILTER
WITH
HIGH-PASS
FILTER
SERIAL
INTERFACE
&
MODE/FORMAT
CONTROL
FMT
12
VINR
14
VINL
13
MD1
11
MD0
10
DOUT
9
BCK
8
CLOCK & TIMING CONTROL
POWER
SUPPLY
SCKI 6
VREF 1
IC103  105  TPS54331GDR
EN 3
VIN 2
BOOT 1
7 GND
8 PH
5 VSENSE
SHUTDOWN
LOGIC
BOOT
CHARGE
THERMAL
SHUTDOWN
SS 4
ENABLE THRESHOLD
ENABLE
COMPARATOR
+
+
6 COMP
MAXIMUM
CLAMP
FREQUENCY
SHIFT
GATE
DRIVE
LOGIC
BOOT
UNDERVOLTAGE
LOCKOUT
OSCILLATOR
SLOPE
COMPENSATION
ECO-MODE
MAXIMUM CLAMP
DISCHARGE
LOGIC
VOLTAGE
REFERENCE
PWM
COMPARATOR
PWM
LATCH
6
Q R
S
12 A/V
CURRENT
SENSE
ERROR
AMPLIFIER
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