HA12220 Datasheet | Hitachi Semiconductor

Features - Built-in variable resistors (+14 to - 16% 2% steps) for adjusting tracking error EF balance - Built-in variable resistors (- 8 to +8d B 4d B steps) for rough adjusting tracking gain - Built-in variable resistors (- 8 to +8d B 4d B 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 (- 3d B) in case of peaking off - High-speed access support (The mirror circuit internal time constant can be switched between normal, 4× and 8× modes.) - Support for CD-RW playback - Few external ponents - Available to set the stand-by mode - FP-28TB package HA12220F Block Diagram 0.1µ 28 RF1 27 VCC BIAS RF2 1 + - EQ - + MIRH 19 RFS - + FSA FOK + - MIRR 18 HD49250 VCB 26 BYPS 10µ GND VCF 1µ 23 RFC AGCF 0.1µ HD49250 22 AGCO 21 DFH DEFECT DFT 20 HD49250 0.015µ AGC Gain changing RF3 2 RF4 3 FE FVR2 + - FVR Offset FOK 17 HD49250 TR1 4 + - TR1 TVR + - TE TLPF + - TVR2 + - TA BAL TR2 5 + - TR2 TVR IIL Gain=8d B Typ XLT 16...