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參數(shù)資料
| 型號(hào)： | VSC7940 |
| 廠商： | Vitesse Semiconductor Corporation. |
| 英文描述： | SONET/SDH 3.125Gb/s Laser Diode Driver with Automatic Power Control |
| 中文描述： | SONET / SDH的3.125Gb / s的激光具有自動(dòng)功率控制二極管驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 13/16頁(yè) |
| 文件大?。?/td> | 167K |
| 代理商： | VSC7940 |
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VITESSE
Preliminary Data Sheet
VSC7940
SONET/SDH 3.125Gb/s
Laser Diode Driver with Automatic Power Control
G52357-0, Rev 3.2
05/11/01
Page 13
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano
Camarillo, CA 93012
Tel: (800) VITESSE
FAX: (805) 987-5896
Email: prodinfo@vitesse.com
Internet: www.vitesse.com
Select Resistors for MODMON and BIASMON
Assuming the modulation and bias currents never exceed 120mA, the following equations provide values
for the resistor at MODMON, R
MODMON
, and the resistor at BIASMON, R
BIASMON
:
R
MODMON
= 1V * 28 / 120mA = 233
R
BIASMON
= 1.6V * 35 / 120mA = 467
Standard values for these values are R
MODMON
= 232
and R
BIASMON
= 464
. A voltage of 4.8V at
MODMON would indicate a modulation current of:
I
MOD
= (5.2V - 4.8V) * 28 / 232mA = 48mA
Wire Bonding
For best performance, gold ball-bonding techniques are recommended. Wedge bonding is not recom-
mended. For best performance and to minimize inductance keep wire bond lengths short.
PCB Layout Guidelines
Use high frequency PCB layout techniques with solid ground planes to minimize crosstalk and EMI. Keep
high speed traces as short as possible for signal integrity. The output traces to the laser diode must be short to
minimize inductance. Short output traces will provide best performance.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| VSC7940RP | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:SONET/SDH 3.125Gb/s Laser Diode Driver with Automatic Power Control |
| VSC7940W | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:SONET/SDH 3.125Gb/s Laser Diode Driver with Automatic Power Control |
| VSC7958 | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:2.5Gb/s High Speed Limiting Post Amplifier for OC-48/SDH-16 Applications |
| VSC7958CC | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:2.5Gb/s High Speed Limiting Post Amplifier for OC-48/SDH-16 Applications |
| VSC7958X | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:2.5Gb/s High Speed Limiting Post Amplifier for OC-48/SDH-16 Applications |
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