HA12220 Datasheet (Hitachi Semiconductor) - CD-ROM Drive Head Amplifier

HA12220, CD-ROM Drive Head Amplifier

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 11.4k RF FE FSA amplifier input3 RF FE FSA ampli

HA12220F CD-ROM Drive Head Amplifier IC ADE-207-230 (Z) Target Specification 1st.

Edition April 1997 Functions RF amplifier (Built-in equalizer changing circuit) Focus error amplifier (fc = 60kHz Typ) Tracking error amplifier (Built-in cut-off frequency changing circuit fc = 30kHz, 60kHz, 100kHz, 200kHz Typ) FOK detection circuit (Built-in Vth changing circuit) Mirror detection circuit Defect detection circuit APC amplifier <

HA12220 Features

* Built-in variable resistors (+14 to

* 16% 2% steps) for adjusting tracking error EF balance

* Built-in variable resistors (

* 8 to +8dB 4dB steps) for rough adjusting tracking gain

* Built-in variable resistors (

* 8 to +8dB 4dB steps) for rough adjusting