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參數資料
| 型號： | AK2573A |
| 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： | 23/38頁 |
| 文件大?。?/td> | 286K |
| 代理商： | AK2573A |
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ASAHI KASEI [AK2573A]
<MS0189-E-01>
-23-
2004/5
RE_SFP = 0 operation
Set “H” when OPTALM, CURRALM, TEMPALM or DATAALM is detected
Set “L” when no ALM detected.
RE_SFP=1 operation
Support TX_FAULT of the SFP (Small Form-factor Pluggable) requirement.
Set and hold “H” when detected OPTALM, CURRALM, TEMPALM or DATAALM and gointo shutdown
mode.
Reset to “L” when TXDIS1 or TXDIS2 is “H“
→
“L”. Refer to “6. Shutdown” for more information.
During “Adjustment mode”, TXFAULT detection is ignored.
6. Shutdown
6.1 Shutdown Operation
Fig 6-1 shows the shutdown operation. The AK2573A supports the SFP (Small Form-factor Pluggable) requirement.
Fig 6-1 Shutdown Operation
TXDIS1
1
X
0
0
0
TXDIS2
X
1
0
0
0
RE_SFP
X
X
0
1
1
TXFAULT
X
X
X
0
1
Operation
Shutdown
Shutdown
Normal Operation
Normal Operation
Shutdown
Remarks
Shutdown with pin
Shutdown with pin
SFP TXFAULT
Operation
Fig 6-2 Shutdown Condition
Function
I-DAC1 /2 output
APC_FF
APC_FB
ALM
TXFAULT
Operation
High-Z (0mA output)
Normal Operation.
Keep the data at shutdown request.
Normal Operation
R_SFP=0: Normal Operation
R_SFP=1: Keep the data at shutdown request.
Remarks
6.2 Temperature Comparison between Shutdown Request and Release
The AK2573A keeps the temperature data at shutdown request and compares it with temperature at release request
to avoid over-current conditions at the LD. When the AK2573A detects a temperature difference between at
shutdown request and the release request, the APC FB data is set to0 or to initial values in response tothe
temperature at the release request. The temperature difference is programmable.
When the AK2573A does not detect a temperature difference, t keeps the APC FB data, resulting in faster operation.
This function works at release request as folows:
if (ABS(R_TEMP_STDW – R_TEMP)) > R_TEMP_WIN)
R_APC_FB = 0 or reset to the initial value in response to the R_TEMP
where, R_TEMP_STDW is a temperature at shutdown request
R_TEMP is a temperature at release request
R_TEMP_WIN is a temperature difference (user programmable)
APC FF continues tooperate during shutdown for fast performance when a release request is received. However, the
I-DAC current stays at 0mA.
相關PDF資料 |
PDF描述 |
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| 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 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| 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: |
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