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參數(shù)資料
| 型號(hào)： | AK2570 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | Feed Forward APC LSI for LD Module |
| 中文描述： | 前饋apc的大規(guī)模集成電路模塊為勞工處 |
| 文件頁數(shù)： | 15/27頁 |
| 文件大?。?/td> | 292K |
| 代理商： | AK2570 |
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ASAHI KASEI
[AK2570]
<MS0115-E-00>
2001/10
15
*Set up for the RINT register
The offset voltage arising in the T-SENSE is slightly different and has the distribution among the LSIs.
Please adjust that the data in RTMP register exists between the
‘
Minimum code
’
and the
‘
Maximum code
’
shown in this table at the
‘
Minimum ambient temperature for the use
’
with writing the data in RINT register in
“
Training mode
”
, and refer to
‘
Recommended sequence in
”
Training mode
”
in p.7.
Minimum ambient temperature for the use
0
°
C
-20
°
C
-30
°
C
-40
°
C
In the case of fitting at +25
°
C(Reference)
Minimum code
01000010
00100010
00010010
00000010
01100110
Maximum code
01001000
00101000
00011000
00001000
01101100
<Reference>
1LSB of AD2 output data (8bits) is 8.63mV (Typ.
）
. Therefore 6codes is 51.8mV (Typ.) corresponding to
the range between
‘
Minimum code
’
and
‘
Maximum code
’
shown in above table. On the other hand, the step
of the offset cancel voltage is 25mV (Typ.) and it is possible to adjust the output voltage of the T-SNESE in
the range of
‘
Minimum code
’
and
‘
Maximum code
’
.
After this offset voltage adjustment, the output voltage from the T-SENSE becomes appropriate for the
AD2 input range at every ambient temperature (-40
°
C ~ +85
°
C). Also the
‘
Minimum code
’
and the
‘
Maximum code
’
for this adjustment increase 16 codes/10
°
C.
4. D to A converter (DA1 and DA2)
In the normal operation, forcing the
‘
L
’
level signal to SHUTDN-pin makes that DAOUT1 (the output of DA1
+AMP1) and DAOUT2 (the output of DA2+AMP2) utput the voltage corresponding to the data in RDA1 and
RDA2 registers.
On the other hand, forcing the
‘
H
’
level signal to SHUTDN-pin makes that DAOUT1 and DAOUT2 output
0V (Min.). Also the data in RDA1 and RDA2 registers does not change and is held while forcing
‘
Shut down
signal (the
‘
H
’
level)
’
. By forcing the
‘
L
’
level signal to SHUTDN-pin again, DAOUT1 and DAOUT2 output
the signal corresponding the continuously held data in RDA1 and RDA2 registers.
5. Alarm circuit (DA3, ALMOUT, Comparator and ALM Timing Generator)
I) Mode setting
The alarm circuit has the 3 modes (the Continuous mode, the 156Mbps burst transmission mode and the
50Mbps burst transmission mode). Each mode is set by the signals forced to ALMMOD0-pin and
ALMMOD1-pin.
ALMMOD1
ALMMOD0
0
0
0
1
1
0
1
1
Mode
the Continuous mode
the 50Mbps burst transmission mode
the 156Mbps burst transmission mode
Prohibited
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK2572 | APC for Burst Mode Applicable Direct Modulation Laser Diode |
| AK2573A | 125M / 156M Laser Diode Driver + APC |
| AK2573AVB | 125M / 156M Laser Diode Driver + APC |
| AK2574 | 156M Laser Diode Driver + APC for Burst Mode |
| AK2574VB | 156M Laser Diode Driver + APC for Burst Mode |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK2571 | 制造商:AKM 制造商全稱:AKM 功能描述:Single-Chip Automatic Power/Temperature Control for WDM Laser Diodes |
| AK2572 | 制造商:AKM 制造商全稱:AKM 功能描述:APC for Burst Mode Applicable Direct Modulation Laser Diode |
| AK2573A | 制造商:AKM 制造商全稱:AKM 功能描述:125M / 156M Laser Diode Driver + APC |
| AK2573AVB | 制造商:AKM 制造商全稱:AKM 功能描述:125M / 156M Laser Diode Driver + APC |
| AK2574 | 制造商:AKM 制造商全稱:AKM 功能描述:156M Laser Diode Driver + APC for Burst Mode |
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