m62481fp Mitsumi Electronics, Corp., m62481fp Datasheet - Page 36

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

(44-1)
(43)
Track gain adjustment mode (show to ((76/88))
(R3;D7=1,D4->D6=0)
ViE(ViF) signal;
V 46
Vref
D-62481-87I
(44-2)
Phase shift signals (90+/-30)deg.
refer to JP1/SG at Track gain mode.
V
Focus balance adjustment mode (show to (74/88))
(R2;D3=1,D0->D2=0)
INPUT Vi (Pin 46 ):
V 27
V
0
PhTE
BAL
INPUT pin44( COMP IN)
V
thFBAL+,-
+ ,
fc=12MHz AM fmod=500Hz
;
V
A
A=1.0V, B=0.8V
PhTE
Vth -
-;
Vref
B
Vth +
V 44
PICKUP SERVO SYSTEM WITH AUTOMATIC ADJUSTMENT
(
MITSUBISHI
36
ELECTRIC
/ 88 )
t
1KHz
ViF
MITSUBISHI SOUND PROCESSOR LSI
ViE
1KHz
Vi
400k
400k
46
56
55
24
FBAL
0.0047u
1u
Vi
JP1 input
Circuit
400k
45
Focus balance
adjustment
18
400k
44
200k
F-E
30k
30k
M62481FP
20
Vo
1u
Track
balance1
Track
balance2
18
gain
adjustment
1u
gain1
Track
Dout
Logic
24
27
V
0
Dout2
TE1
Vo
VREF=1/2Vcc