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參數資料
| 型號： | AK2573AVB |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 125M / 156M Laser Diode Driver + APC |
| 中文描述： | 1.25億/ 1.56 apc的激光二極管驅動器 |
| 文件頁數： | 36/38頁 |
| 文件大?。?/td> | 286K |
| 代理商： | AK2573AVB |
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ASAHI KASEI [AK2573A]
<MS0189-E-01>
-36-
2004/5
10. Module Adjustment Example
Table 10-1 shows the module adjustment example.
Table 10-1 Module Adjustment Example
No.
Item
1
Go to Adjustment mode
Contents
Issues “Changing toAdjustment mode command” (see Table 9-2) via
I
2
C
TM
I/F.
Set R_SFP = 0 to avod TXFAULT detection at adjustment mode.
Set R_APC_FB_SET = ”00” and R_APC_FF=11. BIAS and MOD
current is set as “Open Loop”.
Set
R_DAC1_GAIN
and
R_DAC2_GAIN,
R_APC_FF_DAC1 for modulation current and R_APC_FF_DAC2 for
BIAS current of LD.
Adjust R_DUTY for 50% duty of LD power, if necessary. After duty
adjustment, tune MOD and BIAS current by R_APC_FF_DAC1 and 2, if
necessary.
Adjust R_PDGAIN for PDMON = 1V. Go to step7.
If you cannot measure PDMON voltage, see step 6B.
Set R_APC_TRGT=100000 and R_PDGAIN=000000 (Gain=23.5dB).
Then set R_APC_FF_SET and R_APC_FB_SET as your configulation.
APC FB adjusts LD output automatically. Adjust R_PDGAIN for
normal LD output. R_APC_TRGT adjustment is for fine tunning of
optical power. Go tostep-8.
Set R_APC_TRGT = “10000”.
Set R_APC_FB_SET according toyour configuration.
Adjust R_APC_TRGT to tunning LD output. LD output is adjusted
automaticaaly according to the R_APC_TRGT.
Read R_TEMP (on-chip temperature sensor detection temperature).
(1) 2 or more temperature adjustment
Do step 2 to 8 with different temperature and estimate LD current data of
look-up table.
2
3
SFP setting
APC setting
4
LD current adjustment
then
adjust
5
Duty adjustment
6-A
PDGAIN adjustment
6-B
PDGAIN adjustment
7
APC FB setting
8
APC FB target
adjustment
Read temperature data
Estimate LD temperature
characteristics
9
10
(2) Single point adjustment
Calculate LD current data of look-up table with on-chip temperature
sensor gain (-1.49
℃
/LSB), R_TEMP and LD characteristics.
(1) Make the data for EEPROM.
(2) Issue mode change command to EEPROM.
(3) Write adjustment data to EEPROM.
(4) Read EEPROM data and verify it.
Issue mode change command to self-running. AK2573A operates
temperature detection, feed current in response totemperature, and a
feedback operation automatically according to the data in EEPROM.
11
Write adjustment data to
EEPROM
12
Self running mode
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相關代理商/技術參數 |
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| AK2574 | 制造商:AKM 制造商全稱:AKM 功能描述:156M Laser Diode Driver + APC for Burst Mode |
| AK2574VB | 制造商:AKM 制造商全稱:AKM 功能描述:156M Laser Diode Driver + APC for Burst Mode |
| AK2581HB-AT | 制造商:ADDA Corporation 功能描述:AC-FAN, 254X89 MM, 115/60 VOLT 制造商:ADDA Corporation 功能描述:AXIAL FAN 254MM 115VAC 620mA 制造商:ADDA Corporation 功能描述:AXIAL FAN, 254MM, 115VAC, 620mA 制造商:ADDA Corporation 功能描述:AK Series 2100/2000 RPM 254 x 89 mm 115 V 680/630 CFM Ball Bearing AC Fan 制造商:ADDA Corporation 功能描述:AXIAL FAN, 254MM, 115VAC, 620mA; Frame Dimensions:254mm x 89mm; Supply Voltage:115VAC; Current Rating:620mA; Flow Rate - Imperial:630cu.ft/min; Flow Rate - Metric:19.244m /min; Noise Rating:62dBA; Bearing Type:Ball; Series:AK25489 ;RoHS Compliant: Yes 制造商:ADDA 功能描述:AK Series 2100/2000 RPM 254 x 89 mm 115 V 680/630 CFM Ball Bearing AC Fan |
| AK2581HB-AT-LF | 功能描述:風扇 254x89mm 110/120VAC Hi Spd Ball Term RoHS:否 制造商:Sanyo Denki 產品:Fans 電流類型: 電源電壓:48 V 氣流:636 CFM 軸承類型: 噪聲:83 dBA 速度:6400 RPM 功率額定值:264 W 框架尺寸 (mm):172 mm x 150 mm x 102 mm 外殼材料:Aluminum 端接類型:Wire 系列: |
| AK2581HB-AW | 制造商:ADDA Corporation 功能描述:AC-FAN, 254X89 MM, 115/60 VOLT 制造商:ADDA Corporation 功能描述:AXIAL FAN 254MM 115VAC 620mA 制造商:ADDA Corporation 功能描述:AXIAL FAN, 254MM, 115VAC, 620mA 制造商:ADDA Corporation 功能描述:AK Series 2100/2000 RPM 254 x 89 mm 115 V 680/630 CFM Ball Bearing AC Fan 制造商:ADDA Corporation 功能描述:AXIAL FAN, 254MM x 89MM, 115VAC, 620MA; Frame Dimensions:254mm x 89mm; Supply Voltage:115VAC; Current Rating:620mA; Flow Rate - Imperial:630cu.ft/min; Noise Rating:62dBA; Bearing Type:Ball; Power Connection Type:Wire Leaded ;RoHS Compliant: Yes 制造商:ADDA 功能描述:AK Series 2100/2000 RPM 254 x 89 mm 115 V 680/630 CFM Ball Bearing AC Fan |
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