HA12220 Hitachi Semiconductor, HA12220 Datasheet - Page 18
HA12220
Manufacturer Part Number
HA12220
Description
CD-ROM Drive Head Amplifier IC
Manufacturer
Hitachi Semiconductor
Datasheet
1.HA12220.pdf
(20 pages)
- Current page: 18 of 20
- Download datasheet (144Kb)
HA12220F
Test Circuit
Rev.1, Apr. 1997, page 18 of 20
VIN50
S28
S51
S50
S1
S2
S3
S4
S5
V51
560
2SB
561C
2k
390k
390k
0.1
1
2
3
4
5
6
APC
28
BAL
20k
S8a
+
–
+
–
V
7
TR1
TR2
CC
27
S8b
2k
BIAS
+
TVR
TVR
EQ
–
26
8
RFS
+
–
0.1
FE
20k
S9a
+
–
S9b
TE
9
2k
+
FVR2
–
FSA
25
+
–
+
TLPF
1
VCB
10
GND
+
–
FA2
+
–
FOK
+
–
Note: The symbol “ ” of transfer switch shows OFF state.
GND
Offset
1
Gain changing
FVR
24
TVR2
BUF
+
AGC
11
V11
V23
S23
23
+
+
0.1
–
–
FA
TA
+
12
22
10
10k
S22
13 14
IIL
DEFECT
MIRR
Serial data generator
21
0.015
20
19
18
17
16
15
0.033
10k
S20
10k
S18
10k
S17
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