an8725fh Panasonic Corporation of North America, an8725fh Datasheet - Page 2

• Manufacturer Part Number: an8725fh
• Description: Semiconductor Laser Power Control Ic
• Manufacturer: Panasonic Corporation of North America

AN8725FH
2
Block Diagram
RPHOLD
XLDERR
AGND
XHFON
XLDEN
PKMD
XCLR
BIMD
IGND
XWR
XRD
AD0
AD1
AD2
AD3
DT0
DT1
DT2
DT3
DT4
DT5
DT6
DT7
40
35
54
11
12
13
14
15
16
17
18
22
23
24
25
26
27
29
32
4
5
6
8
9
Control
logic
X1/SX2 changeover
AAF off
AAF RST
CTL SW6
Current source for DAC
PS over
PS down
WPW over
WPW down
RPW over
RPW down
Sleep
4
4
5
8
4
DAC1
Insufficient
light emission
DAC5
Excessive
light emission
DAC6
Playback
Playback
DAC9 DAC4
4
4
8
current
current
Supply voltage
DAC9
DAC1
8
Peak bias
monitoring
current
DAC4
DAC56SW
LPF off
LPF off
Shunt circuit
Playback
Playback
SW5
current
current
current
DAC7
DAC8
current
DAC2
DAC3
Abnormal
LPF9
LPF1
Peak
detection
Bias
emitting
light
conversion
AAF
SW1
SW1
SW2
SW3
I/V
voltage source
Sleep circuit
Reference
(1.25 V)
DAC3
ICs for Optical Disk Drive
amplification
amplification
amplification
DAC2
X1, X10
Current
Current
Current
SW6
DAC8
Buffer
DAC7
44
43
65
39
38
70
69
75
74
51
50
49
48
47
46
56
36
53
52
34
33
28
19
10
9
3
2
LPF92
LPF91
LDRP
LPF12
LPF11
XLDPK
LDPK
XLDBI
LDBI
IPD
IVIN
IVOUT
AAF
PWRMONI
DETMONI
VNR
VC
CV
CGND
DGND
DV
CC
CC