an8771nfh Panasonic Corporation of North America, an8771nfh Datasheet - Page 9

• Manufacturer Part Number: an8771nfh
• Description: Pre-amplifier Ic For Md
• Manufacturer: Panasonic Corporation of North America

V
APCPD
APCPD
4. Internal circuit of APCPD (pin 63)
CC3
REFIN
connected to APCPD and PD current for laser monitor is sunk to PD, the direction of current can be reversed by
connecting the PD output to APCPD
Technical Data (continued)
Application Circuit Example
PD
V
PWM signal
A current mirror circuit of which primary side is APCPD is built-in. In case where output of secondary side is
Mirror ratio is 1 to 1 as the h
When using no current mirror, connect APCPD to V
REF
Optical pick-up
PD
PD
PD
PD
PD
PD
PD
PD
V
64
62
63
REF
Head
amp.
Laser
diode
Laser drive reference voltage
63
49
50
51
52
53
54
55
56
57
58
59
60
61
62
64
61 LDO
FE
V
CC3
V
Temperature sensor
REF
SDD00018CEB
CC3
.
AN8771NFH
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
Microcomputer
V
CC1
Survo-LSI
9