VSC7926(2001) 查看數據表（PDF） - Vitesse Semiconductor
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VSC7926 Datasheet PDF : 10 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Data Sheet
VSC7926
SDH/SONET 2.5Gb/s Laser Diode Driver
Features
• Rise Times of Less Than 100ps
• High-Speed Operation
(Up to 2.5Gb/s NRZ Data)
• Differential Inputs
• Single Supply
• Direct Access to Modulation and Bias FETs
• Data Density Monitors
• On-Chip Reclocking Register
General Description
The VSC7926 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 high unbalanced data applications. Clock and data inputs are differentially terminated to 50Ω.
Applications
• SDH/SONET @ 622Mb/s, 1.244Gb/s, 2.488Gb/s
• Full Speed Fibre Channel (1.062Gb/s)
VSC7926 Block Diagram
DIN
DINTERM*
NDIN
50 Ω **
50 Ω **
CLK
CLKTERM*
NCLK
50 Ω **
50 Ω **
*Terminated to Off-chip Capacitor
**On Die Components
DQ
MK
NMK
DCC
DCC
VIP
VIB
IMOD
IOUT
NIOUT
IBIAS
IBIAS
MIP
MIB
G52188-0, Rev 3.0
04/05/01
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
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