HA12220F Datasheet, PDF (3/20 Pages) Hitachi Semiconductor – CD-ROM Drive Head Amplifier IC

Pin Description and Equivalent Circuit
Pin No. Pin Name Equivalent Circuit
1
RF2
28 ^12k
120k
160k
1
12k
120k
160k
2
12k
120k
160k
4k
5p _600k
10p
160k
160k
3
12k
10p
120k
160k
2
RF3
3
RF4
28
RF1
4
TR1
4k
1.2p
5
TR2
80k 32k
40k
11.4k
4k
1.2p
6
MD
80k 32k
40k
11.4k
4k
7
LD
1k
150k
HA12220F
Function
RF FE FSA amplifier input2
RF FE FSA amplifier input3
RF FE FSA amplifier input4
RF FE FSA amplifier input1
TR1 amplifier input
TR2 amplifier input
APC amplifier input
APC amplifier output
8
TE
9
FE
Tracking error signal output
40k
Focus error signal output
Rev.1, Apr. 1997, page 3 of 20