m62481fp Mitsumi Electronics, Corp., m62481fp Datasheet - Page 20

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

(13)-2 V
2
3
1
. Focus gain ( -11->9.8dB ) Measurement circuit (13)-2
. Focus gain ( R3;D0->3=1 ( 9.8dB ) Measurement circuit (13)-2
Vos
. Focus gain ( R3;D0->3=1 ( 9.8dB ) Measurement circuit (13)-1
Input pin54 add Va( Offet voltage )
Vos
Vos
D-62481-87I
FE1
FE1
OSFE1adj
FE1
adj( pin35) : mesurement
adj is within +/- 15mV by adjusting Va.
: within +/- 50mV
19
Focus
balance2
V
REF
+
54
30k
60k
60k
47k
47k
53
PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT
Focus
gain1
(
A-B
MITSUBISHI
30k
60k
20
ELECTRIC
60k
FS OFF
Focus
balance1
/ 88 )
MITSUBISHI SOUND PROCESSOR LSI
FE1
22k
1k
2k
FS ON
FE2
220k
18k
1.2M
M62481FP
FS HOLD
VREF=1/2Vcc
Focus
offset
Focus
gain2
36
38
37
35
33
32
100k
220k
V
V
240k
47k
OSFE1adj
OSFE2
27k