69
HCD-HDX265/HDX266/HDX267W/HDX465/HDX466/HDX665
•
IC Block Diagrams
– MAIN Board –
IC502, 1105, 1107, 1703 TK11133CSCL-G
IC1702, 3050 TK11118CSCL-G
IC1707 TK11150CSCL-G
CONTROL
CIRCUIT
BANDGAP
REFERENCE
+
–
OVER HEAT &
OVER CURRENT
PROTECTION
1
VCONT
3
NP
2
GND
4
VOUT
5
VIN
IC503 PST3635NR
VDD 2
OUT 1
GND 3
+
–
VREF
CD
5
NC
4
IC504 NJM2887DL3 (TE2)
5
VADJ
4
VOUT
3
GND
2
VIN
1
CONTROL
+
–
THERMAL
PROTECTION
BANDGAP
REFERENCE
IC772 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
×
1/64
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