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HA12220F

Hitachi Semiconductor
Part Number HA12220F
Manufacturer Hitachi Semiconductor
Description CD-ROM Drive Head Amplifier
Published Mar 22, 2005
Detailed Description HA12220F CD-ROM Drive Head Amplifier IC ADE-207-230 (Z) Target Specification 1st. Edition April 1997 Functions • RF amp...
Datasheet PDF File HA12220F PDF File

HA12220F
HA12220F

Overview
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 • RFAGC amplifier 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 focus gain • Built-in focus offset insertion circuit (–0.
7 to +0.
7V in 0.
1V steps) • RF amplifier frequency characteristics 30MHz (–3dB) in case of peaking off • High-speed access support (The mirror circuit internal time constant can be switched between normal, 4× and 8× mod...


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