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VSC7939-W PDF预览

VSC7939-W

更新时间: 2024-02-18 10:13:55
品牌 Logo 应用领域
美高森美 - MICROSEMI 接口集成电路
页数 文件大小 规格书
18页 179K
描述
Interface Circuit, DIE-48

VSC7939-W 技术参数

生命周期:Contact Manufacturer包装说明:DIE,
Reach Compliance Code:compliant风险等级:5.63
其他特性:CAN ALSO OPERATE WITH -5.2V SUPPLY接口集成电路类型:INTERFACE CIRCUIT
JESD-30 代码:R-XUUC-N48功能数量:1
端子数量:48最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:UNSPECIFIED
封装代码:DIE封装形状:RECTANGULAR
封装形式:UNCASED CHIP认证状态:Not Qualified
最大供电电压:5.5 V最小供电电压:3.135 V
标称供电电压:3.3 V表面贴装:YES
温度等级:INDUSTRIAL端子形式:NO LEAD
端子位置:UPPERBase Number Matches:1

VSC7939-W 数据手册

 浏览型号VSC7939-W的Datasheet PDF文件第2页浏览型号VSC7939-W的Datasheet PDF文件第3页浏览型号VSC7939-W的Datasheet PDF文件第4页浏览型号VSC7939-W的Datasheet PDF文件第5页浏览型号VSC7939-W的Datasheet PDF文件第6页浏览型号VSC7939-W的Datasheet PDF文件第7页 
VSC7939  
Data Sheet  
SONET/SDH 3.125Gb/s Laser Diode Driver with Automatic Power Control  
FEATURES  
APPLICATIONS  
Power Supply: +3.3V, +5V or –5.2V  
AC- or DC-Coupled to Laser Diode  
Programmable Modulation Current: 5mA to 60mA  
Programmable Bias Current: 2mA to 100mA  
Enable /Disable Control  
SONET/SDH at 155Mb/s, 622Mb/s, 1.244Gb/s,  
2.488Gb/s, 3.125Gb/s  
Full-Speed Fibre Channel (1.062Gb/s, 2.124Gb/s)  
OC-48, OC-12, OC-3 Modules  
SFF/SFP Modules  
CWDM Modules  
Typical Rise/Fall Times of 60ps  
DWDM Modules  
Automatic Optical Average Power Control  
Modulation and Bias Current Monitors  
GENERAL DESCRIPTION  
The VSC7939 is a single +3.3V, +5V or –5.2V supply laser diode driver for SONET/SDH applications up to  
3.125Gb/s. External resistors set a wide range of bias and modulation currents for driving the laser. Data and clock  
inputs accept differential PECL signals. The Automatic Power Control (APC) loop maintains a constant average  
optical power over temperature and lifetime. The dominant pole of the APC loop can be controlled with an external  
capacitor. Other features include enable/disable control, short-circuit protection for the modulation and bias inputs,  
short rise and fall times, and failure-monitor output to indicate when the APC loop is unable to maintain the desired  
average optical power. The VSC7939 is available in die form, a 32-pin MLF, or 32-pin TQFP package.  
VSC7939 Block Diagram  
VCC  
LATCH  
VSC7939  
CD  
IOUT+  
IOUT-  
CF  
RF  
MUX  
DATA+  
DATA-  
DSET  
Q
VCC  
CLRQ  
CLK+  
CLK-  
BIAS  
VCC  
VCC  
ENABLE  
DISABLE  
MODMON  
BIASMON  
APC  
MD  
FAIL  
MODSET  
BIASMAX  
CAPC  
APCSET  
G52350, Rev 4.1  
10/9/02  
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012  
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com  
Internet: www.vitesse.com  
1 of 18  

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