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| 型號： | AN8725FH |
| 廠商： | PANASONIC CORP |
| 元件分類： | 其它接口 |
| 英文描述： | Semiconductor laser power control IC |
| 中文描述： | SPECIALTY INTERFACE CIRCUIT, PQFP80 |
| 封裝： | 12 X 12 MM, PLASTIC, QFP-80 |
| 文件頁數(shù)： | 19/36頁 |
| 文件大?。?/td> | 197K |
| 代理商： | AN8725FH |
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ICs for Optical Disk Drive
AN8725FH
19
I
Electrical Characteristics at V
CC
=
5.0 V, T
a
=
25
°
C (continued)
Design reference data (continued)
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Optical monitor for abnormally emitted light detection (continued)
Signal changeover response
×
5 mode
t
ERSW1B
Playback
→
recording
±
0.5%,
addr "9": D4
=
"1"
×
5
t
ERSW2B
Recording
→
playback
±
0.5%,
addr "9": D4
=
"1"
×
5
200
400
ns
250
500
Control operation response Register setting
→
output
Data writing to LPF-off
t
87
XWR
↑
to LPF "off"
XWR
↑
to LPF "on"
XWR
↑
to AAF "off"
XWR
↑
to AAF "on"
XWR
↑
to DAC6
±
0.5%
0.8
2.0
μ
s
Data writing to LPF-on
t
88
250
600
ns
Data writing to AAF-off
t
85
60
200
ns
Data writing to AAF-on
t
86
t
207
20
200
ns
Data writing to
DAC6 changeover
*3
0.9
2.5
μ
s
Data writing to
DAC5 changeover
*3
t
208
XWR
↑
to DAC5
±
0.5%
0.9
2.5
μ
s
Data writing to shunt on
*4
t
89
XWR
↑
to shunt circuit "on",
LDERR register "1"
430
ns
Data writing to shunt off
*4
t
90
XWR
↑
to shunt circuit "off",
LDERR register "0"
230
ns
Control operation response Input
→
output
RPHOLD
↑
to
PWRMONI changeover
t
37
RPHOLD
↑
to
×
1,
at having reached
±
0.5%
RPHOLD
↓
to
×
10, AAF,
at having reached
±
0.5%
0.4
0.9
μ
s
RPHOLD
↓
to
PWRMONI changeover
t
38
0.4
0.9
μ
s
RPHOLD
↑
to mask signal
*5
t
45
t
46
RPHOLD
↑
to mask signal
↓
Mask signal
↓
to mask signal
↑
at RPHOLD high
15
30
ns
Mask signal width at
RPHOLD
↑
*5
RPHOLD
↓
to mask signal
*5
1
1.1
μ
s
t
47
t
48
RPHOLD
↓
to mask signal
↓
Mask signal
↓
to mask signal
↑
at RPHOLD low
15
30
ns
Mask signal width at
RPHOLD
↑
*5
RPHOLD
↓
to
AAFRST signal
↑
*5
AAFRST signal width
*5
1
1.1
μ
s
t
211
RPHOLD
↓
to AAFRST
↑
15
30
ns
t
212
AAFRST
↑
to AAFRST
↓
XCLR
↓
to shunt circuit "on"
XCLR
↑
to shunt circuit "off"
2
2.2
μ
s
Shunt circuit "on"
*6
t
49
430
ns
Shunt circuit "off"
*6
t
50
230
ns
Note)*3: Measure at DACMONI pin.
*4: Measuring is impossible outside the IC.
*5: Measuring is impossible outside the IC.
The values of t
46
, t
48
and t
212
are determined by the built-in resistor Rin1 (10 k
, allowance: 10%) and the external C1.
*6: Measuring is impossible outside the IC. The built-in resistor Rin2 (10 k
, allowance: 10%) and the external C2.
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