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39
HCD-SPZ50/SPZ70
•
IC Block Diagrams
– CD Board –
IC203
BH18LB1WG-TR
THERMAL
PROTECTION
VOLTAGE
REFERENCE
CONTROL
BLOCK
OVER CURRENT
PROTECTION
VIN 1
GND 2
STBY 3
NC
4
VOUT
5
+
–
LEVEL SHIFT
MUTING
D
15
16
+ –
+
–
D
D
17
18
D
19
20
VREF
21
22
23
24
25
26
27
28
PREVCC
OPOUT
OUTVREF
CH4CAPA
CH4IN
CH3FIN
CH3RIN
GND
MUTE
POWVCC
CH3OUTF
CH3OUTR
CH4OUTF
CH4OUTR
INTERFACE
14
13
D
12
11
D
10
9
8
7
6
CH2FIN
CH2RIN
GND
VREFIN
POWVCC
CH2OUTR
CH2OUTF
CH1OUTR
CH1OUTF
INTERFACE
D
D
INTERFACE
IC402
BA5947FM-E2
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QQ 376315150
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TEL 13942296513
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9
2
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2
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299