HA12220 amplifier equivalent, cd-rom drive head amplifier.
* Built-in variable resistors (+14 to
–16% 2% steps) for adjusting tracking error EF balance
* Built-in variable resistors (
–8 to .
and Equivalent Circuit
Pin No. 1 Pin Name RF2
28
12k 120k 160k 12k 120k 160k 12k 120k 160k 12k 120k 160k
Equivalent Circuit
4k
Function RF FE FSA amplifier input2
5p
600k
1
10p 160k 160k
2
3
10p
2 3 28 4
RF3 RF4 RF1 TR1
4k 1.2p 80k 40k 32k.
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