HA12220F Datasheet, PDF (18/20 Pages) Hitachi Semiconductor – CD-ROM Drive Head Amplifier IC

HA12220F
Test Circuit
S28
V_CC
0.1µ
28 27 26
S1
1
S2
2
S3
3
S51
V51
S50
0.1µ
VIN50
BIAS
EQ
–
+
RFS
–
+
FE
V23
S23
10k
1µ
1µ
0.1µ S22
0.015µ
25
GND 24 23
22
21
10k
+
–
VCB
AGC
Gain changing
S20
DEFECT 20
–
+
FSA
FOK
+
–
0.033µ
19
10k
S18
MIRR 18
+FA2
–
FVR2
+FA
–
FVR
Offset
10k
S17
17
S4
4
390k
S5
5
390k
+TR1
–
BAL
+TR2
–
TVR
TVR
+TE
–
TLPF +
–
+TA
–
TVR2
IIL
16
560
6
APC
BUF
15
2SB
561C
2k
7
8
9
S8a S8b
20k 2k
S9a S9b
20k 2k
10 GND 11
12
13 14
V11 ⁺ 10µ
Serial data generator
Note: The symbol “q” of transfer switch shows OFF state.
Rev.1, Apr. 1997, page 18 of 20