音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

VSC7939W Datasheet

  • VSC7939W

  • Laser Diode Driver with Automatic Power Control

  • 228.48KB

  • 18頁

  • VITESSE

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Data Sheet
VSC7939
Features
鈥?Power Supply: 3.3V or 5V
鹵
5%
鈥?AC-Coupled to Laser Diode
SONET/SDH 3.125Gb/s
Laser Diode Driver with Automatic Power Control
Applications
鈥?SONET/SDH at 622Mb/s, 1.244Gb/s,
2.488Gb/s, 3.125Gb/s
鈥?Full-Speed Fibre Channel (1.062Gb/s)
鈥?Programmable Modulation Current: 5mA to 60mA
鈥?Programmable Bias Current: 1mA to 100mA
鈥?Enable /Disable Control
鈥?Typical Rise/Fall Times of 60ps
鈥?Automatic Optical Average Power Control
鈥?Supply Current of 33mA at 3.3V
General Description
The VSC7939 is a single 3.3V or 5V supply laser diode driver specially designed for SONET/SDH applica-
tions 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 con-
trolled with an external capacitor. Other features include enable/disable control, short-circuit protection for the
modulation and bias inputs, short rise and fall times, programmable slow-start circuit to set laser turn-on delay,
and failure-monitor output to indicate when the APC loop is unable to maintain the average optical power. The
VSC7939 is available in die form or in a 32-pin TQFP package.
Block Diagram
3.3V Operation
L
P
IOUT+
IOUT-
MUX
DATA+
DATA-
CLK+
CLK-
D
SET
V
CC
LATCH
C
D
C
F
R
F
V
CC
Q
CLR
Q
BIAS
V
CC
ENABLE
DISABLE
APC
MD
FAIL
MODSET
BIASMAX
CAPC
APCSET
1nF
V
CC
MODMON
BIASMON
G52350-0, Rev 3.2
02/26/01
漏
VITESSE
SEMICONDUCTOR CORPORATION
鈥?741 Calle Plano 鈥?Camarillo, CA 93012
Tel: (800) VITESSE 鈥?FAX: (805) 987-5896 鈥?Email: prodinfo@vitesse.com
Internet: www.vitesse.com
L
P
Page 1

VSC7939W相關(guān)型號PDF文件下載

您可能感興趣的PDF文件資料

熱門IC型號推薦

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋
返回頂部

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！