HA12220 Hitachi Semiconductor, HA12220 Datasheet - Page 3

• Manufacturer Part Number: HA12220
• Description: CD-ROM Drive Head Amplifier IC
• Manufacturer: Hitachi Semiconductor

Pin Description and Equivalent Circuit
Pin No.
1
2
3
28
4
5
6
7
8
9
Pin Name
RF2
RF3
RF4
RF1
TR1
TR2
MD
LD
TE
FE
Equivalent Circuit
28
1
2
3
120k
160k
120k
160k
120k
160k
120k
160k
12k
12k
12k
12k
150k
4k
4k
10p
5p
4k
80k
80k
40k
40k
4k
1k
600k
160k
1.2p
1.2p
40k
32k
32k
11.4k
11.4k
160k
10p
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
Tracking error signal output
Focus error signal output
Rev.1, Apr. 1997, page 3 of 20
HA12220F