Description
The typical values of built-in capacitances in this IC are reduced 10% compared with those in IC HA12188F.
RF amplifier
Focus error amplifier
Tracking error amplifier
FOK detector
Mirror detector
Defect detector
APC amplifier
Focus, tracking, and sled servo control
Inner/outer direction detector
Features
- Built-in variable resistors for adjusting tracking error EF balance, tracking gain, and focus gain.
- Single power supply.
- Supports double and quadruple speeds.
- Few external components.
- FP-56 package
HA12188AF
Block Diagram
VCC 42
41 RS2
40
39
38
37
36
35
34
33 Mirror
32
31 30 29 Defect
RS1 RFS.
- +
Bias
FOK.
- +
28 LDS 27 CLK 26 DATA
43 RF2 44 45
+
+.
- RF1.
- +
FE
Input I/F Logic
25 XLT 24 DC 23 XRS.
HA12188AF_HitachiSemiconductor.pdf
