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參數(shù)資料
| 型號： | 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)： | 5/27頁 |
| 文件大?。?/td> | 292K |
| 代理商： | AK2570 |
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ASAHI KASEI
[AK2570]
<MS0115-E-00>
2001/10
5
FUNCTIONAL DESCRIPTION
1. Explanation for the
‘
mode
’
AK2570 has the 2 operational modes,
“
Self-operation mode
”
and
“
Training mode
”
.
After executing the evaluation and the adjustment for the LD module including AK2570 in
“
Training mode
”
, it
is possible to use AK2570 ordinarily in
“
Self-operation mode
”
for compensating the temperature drift of the LD
module.
“
Self-operation mode
”
is the ordinary operational mode. If the ambient temperature drifts, AK2570 can
maintain the emission intensity of the LD module constant by executing the APC operation, i.e. controlling the
Bias- and the Modulation- current for the LD module, periodically (the compensation period is about 100msec)
in
“
Self-operation mode
”
. (See p.6) On the other hand, in
“
Training Mode
”
, it is possible to evaluate and adjust
AK2570 and the LD module by the access to the data in the EEPROM and the registers. (See p.7)
[a] Constitution of the mode and the command
Self-operation mode
Activating internal circuit
Register access
EEPROM access
Command for A/D operation
Command for Resetting data in RDA1-3
READ-REG
WRITE-REG
WRITE-EEP
READ-EEP
EWDS
EWEN
Training mode
Initial setting
Command for Selecting AD1
Command for Selecting AD2
[Note1]
[Note2]
Command for Self-operation mode
Command for Training mode
[Note 1] While operating in
“
Self-operation mode
”
, it is possible to shift to
Training mode
”
by executing
‘
Command for Training mode
’
and this is the only available command. That is to say that any other
command is not effective in
“
Self-operation mode
”
.
[Note 2] On the other hand, while operating in
“
Training mode
”
, it is possible to shift to
“
Self-operation mode
”
by executing
‘
Command for Self-operation mode
’
or forcing the
‘
L
’
level signal to SK-pin for 50ms
more and AK2570 shifts to
“
Self-operation mode
”
with behaving as same as the operation at
‘
Power
ON
’
.
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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