m62481fp Mitsumi Electronics, Corp., m62481fp Datasheet - Page 63

• Manufacturer Part Number: m62481fp
• Description: Pickup Servo System With Automatic Adjustment
• Manufacturer: Mitsumi Electronics, Corp.

HFC
42
D-62481-87I
Focus Servo System2
B
A
C
( Note ) Resistors and Capacitors without value are externals.
( HF Amp, Focus Balance Detector )
HFOK
Detector
C
B
A
54
53
52
Bottom
Peak
Hold circuit
Hold circuit
51k
51k
B
A
C
0.1p
0.1p
0.2p
60k
60k
(Cut off frequency)
30k
R1;D13 BW WIDE
5.1k
min.18~max.18k
10k
10k
5k
AB
Low Speed Bottom
Hold circuit
51
HF -IN
43
49
PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT
(
MITSUBISHI
MRC
62
ELECTRIC
HF OUT
HF
/ 88 )
High Speed Bottom
DSP
Hold Output
48
HF signal
MITSUBISHI SOUND PROCESSOR LSI
47
Mirror Detector
MR
IN
5k
46
34
FBI
FBAL
11k
R0;D5 Brake
(MR ratio)
M62481FP
Low Speed Bottom
Hold Output
HFOK
MR
(Internal)
1k
FBO
V
50p
REF
45
34
=1/2Vcc
FBAL
ADJ2
Focus
Balance
judgment
t
44
28
34
COMP
IN
HFD