參數(shù)資料
型號(hào): VSC7925
廠商: Vitesse Semiconductor Corporation.
英文描述: SONET/SDH 2.5Gb/s Laser Diode Driver
中文描述: SONET / SDH的容量高達(dá)2.5GB / s的激光二極管驅(qū)動(dòng)器
文件頁(yè)數(shù): 1/10頁(yè)
文件大?。?/td> 111K
代理商: VSC7925
VITESSE
G52157-0, Rev 3.2
05/01/01
Page 1
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano Camarillo, CA 93012
Tel: (800) VITESSE FAX: (805) 987-5896 Email: prodinfo@vitesse.com
Internet: www.vitesse.com
Preliminary Data Sheet
VSC7925
SONET/SDH 2.5Gb/s Laser Diode Driver
Features
Rise Times Less Than 100ps
High Speed Operation (Up to 2.5Gb/s NRZ Data)
Single-ended Inputs
Single Supply
Direct Access to Modulation and Bias FET’s
Data Density Monitors
On-Chip Reclocking Register
24-Pin Ceramic Package
Applications
SONET/SDH at 622Mb/s, 1.244Gb/s, and
2.488Gb/s
Full-Speed Fibre Channel (1.062Gb/s)
General Description
The VSC7925 is a single 5V supply, 2.5Gb/s laser diode driver with direct access to the laser modulation
and bias FETs. Laser bias and modulation currents are set by external components allowing precision monitor-
ing and setting of the current levels. Data density outputs are provided to allow the user to adjust the laser bias
in unbalanced data applications. Clock and data inputs have nominal 50
termination resistors and high fre-
quency decoupling capacitors.P
VSC7925 Block Diagram
DIN
NDIN*
10pF
50
MK
NMK
IBIAS
NIOUT
IOUT
MIP
VIP
VIB
MIB
D
Q
CLK
NCLK*
DCC
* Terminated to off-chip capacitor
** On-die components
10pF
50
**
**
**
**
I
MOD
I
BIAS
DCC
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