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VSC7938RO PDF预览

VSC7938RO

更新时间: 2024-02-23 10:18:46
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
16页 213K
描述
Interface Circuit, PQFP48, TQFP-48

VSC7938RO 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:LFQFP, QFP48,.35SQ,20Reach Compliance Code:unknown
风险等级:5.66接口集成电路类型:INTERFACE CIRCUIT
JESD-30 代码:S-PQFP-G48JESD-609代码:e0
长度:7 mm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:PLASTIC/EPOXY
封装代码:LFQFP封装等效代码:QFP48,.35SQ,20
封装形状:SQUARE封装形式:FLATPACK, LOW PROFILE, FINE PITCH
电源:3.3/5 V认证状态:Not Qualified
座面最大高度:1.6 mm子类别:Display Drivers
最大供电电压:5.25 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端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:0.5 mm
端子位置:QUAD宽度:7 mm

VSC7938RO 数据手册

 浏览型号VSC7938RO的Datasheet PDF文件第4页浏览型号VSC7938RO的Datasheet PDF文件第5页浏览型号VSC7938RO的Datasheet PDF文件第6页浏览型号VSC7938RO的Datasheet PDF文件第8页浏览型号VSC7938RO的Datasheet PDF文件第9页浏览型号VSC7938RO的Datasheet PDF文件第10页 
VITESSE  
SEMICONDUCTOR CORPORATION  
Preliminary Data Sheet  
SONET/SDH 3.125Gb/s  
Laser Diode Driver with Automatic Power Control  
VSC7938  
Table 5: Pin Identifications  
Pin Name  
Pin Number  
Description  
1, 2, 7, 12, 16,  
20, 23, 33, 34  
36, 40, 42, 45  
GND  
Ground  
3, 6, 8, 11, 18, 24,  
27, 32, 37, 48  
VCC  
Power Supply  
DATA+  
DATA-  
CLK+  
4
5
Positive Data Input (PECL)  
Negative Data Input (PECL)  
9
Positive Clock Input (PECL). Connect to VCC if data retiming is not used.  
Negative Clock Input (PECL). Leave unconnected if data retiming is not used.  
Latch Input (TTL/CMOS). Connect to VCC for data retiming and GND for direct data.  
CLK-  
10  
13  
LATCH  
Enable Input (TTL/CMOS). If used, connect DISABLE to GND. Connect to VCC for  
normal operation and GND to disable laser bias and modulation currents.  
ENABLE  
DISABLE  
14  
15  
Disable Input (TTL/CMOS). If used, leave ENABLE pin floating. Connect to GND for  
normal operation and VCC to disable laser bias and modulation currents.  
SLWSTRT  
FAIL  
17  
19  
Connect capacitor to GND to delay turn on time of bias and modulation currents.  
Output (TTL/CMOS). When low, it indicates APC failure.  
21, 26, 28, 31, 39,  
41  
NC  
No Connection. Leave these pins unconnected.  
APCFILT  
BIAS  
22  
25  
29  
30  
No effect on device operation.  
Laser Bias Current Output  
OUT+  
OUT-  
Positive Modulation-Current Output. IMOD flows when input data is high.  
Negative Modulation-Current Output. IMOD flows when input data is low.  
Monitor Diode Input. Connect to monitor photodiode anode. Connect capacitor to  
GND to filter high-speed AC monitor photocurrent.  
MD  
35  
CAPC  
38  
43  
Capacitor to GND sets dominant pole of the APC feedback loop.  
Do not connect.  
RESERVED  
Resistor to GND sets desired average optical power. If APC is not used connect 100kΩ  
resistor to GND.  
APCSET  
44  
46  
47  
MODSET  
BIASMAX  
Connect resistor to GND to set desired modulation current.  
Connect resistor to GND to set maximum bias current. The APC function can subtract  
from this value, but it cannot add to it.  
© VITESSE SEMICONDUCTOR CORPORATION 741 Calle Plano Camarillo, CA 93012  
Tel: (800) VITESSE FAX: (805) 987-5896 Email: prodinfo@vitesse.com  
Internet: www.vitesse.com  
G52349-0, Rev 3.0  
01/20/01  
Page 7  

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