Harman Kardon FL8385 Service Manual page 32

FL8385
AN8849SB
Head amplifier IC for CD-ROM drive (for 24 times speed or more)
Overview
The AN8849SB is a head amplifier IC for
digital servo. It can configure an efficient CD-ROM
system in combination with the MN662752, and
allows a full-automatic adjustment of tracking bal-
ance-gain-offset and focus balance-gain-offset with
fewer external parts.
Built-in functions are a variable equalizer, wide
band RF amp. and AGC which meet CAV playback
with 24 times speed or more.
Features
• Variable equalizer which meets CAV playback
with 24 times speed or more CAV playback.
• Wide band RF amp. and AGC (f
more (−3 dB))
• Balance adjustment function built-in
Focus error amp./tracking error amp.
• CD-RW playback compatible.
Variable gain
Focus error amp./tracking error amp.
(to +16.9 dB)
• OFTR/BDO detection
• APC amp.
Applications
• CD/CD-ROM drive
36
1
0.3±0.11
= 20 MHz or
C
32
+0.10
15.2±0.3 0.2
–0.05
19
18
1.30±0.25
0.8
Seating plane
SSOP036-P-0450A
harman/kardon
FL8380 FL8380
Unit: mm
1.30±0.25