m62481fp Mitsumi Electronics, Corp., m62481fp Datasheet - Page 18

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

Vref
0
•IV + FE BLOCK
ViA(ViB)
(11)V
note(2/6)
(10)G
V
V
INPUT ViA(ViB)
D-62481-87I
HFE2
LFE2
INPUT ViA(ViB)
HFE2,
VFE
:Vi=1.0V
:Vi=4.0V
Vi=50mVrms
,
V
B
LFE2
ALFE;
;
t
Focus
balance1
1/2Vcc
Focus
balance1
ViA
54
54
~
30k
30k
60k
60k
60k
ViB
PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT
(
53
MITSUBISHI
~
53
Focus
gain1
Focus
gain1
A-B
18
A-B
30k
30k
ELECTRIC
60k
60k
1/2Vcc
60k
ViB
60k
FS OFF
FS OFF
/ 88 )
MITSUBISHI SOUND PROCESSOR LSI
Focus
balance2
Focus
balance2
1k
1k
22k
FE1
22k
FE1
2k
2k
G
B
VFE
GVFE(A•B);Equal phase signals input to
pin 54 and 53 .
ALFE
FS ON
FS ON
FE2
:input A only.Output voltage is at Pin 32
220k
220k
FE2
18k
=G
18k
VFE(A•B)
M62481FP
FS HOLD
FS HOLD
/ G
VFEB
Focus
gain2
Focus
gain2
36
37
36
35
33
32
37
35
33
32
VREF=1/2Vcc
47k
240k
240k
4.7k
47k
27k
27k
Vo
Vo