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VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
VSC7991
Features
• Maximum Rise/Fal...
www.DataSheet4U.com
VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
VSC7991
Features
Maximum Rise/Fall Times of 38ps High-Speed Operation (Up to 10.7Gb/s NRZ Data) Differential Inputs
SONET/SDH 10.7Gb/s Electroabsorption Modulator/Laser Diode Driver
Single-Supply CML-Compatible Data Inputs On-Chip 50Ω Input Terminations 50Ω Output Impedance
General Description
The VSC7991 is a single 7V supply, 10.7Gb/s Electroabsorption Modulator (EAM)/laser diode driver with direct access to the laser modulation FETs. Laser offset and modulation currents are set by external components allowing precision monitoring and setting of the voltage levels. Data inputs are differentially terminated to 50Ω.
Applications
SONET/SDH @ 2.488Gb/s, 9.952Gb/s, 10.7Gb/s
VSC7991 Block Diagram
60Ω(1) 60Ω(1) 50Ω(1) DIN 50Ω(1) NDOUT DOUT
300Ω(1)
NDIN DCC Note: (1) On-die components. VIP IMOD
300Ω(1)
IB IBN
IP
G52321-0, Rev 2.3 02/26/01
© VITESSE SEMICONDUCTOR CORPORATION 741 Calle Plano Camarillo, CA 93012 Tel: (800) VITESSE FAX: (805) 987-5896 Email:
[email protected] Internet: www.vitesse.com
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www.DataSheet4U.com
VITESSE
SEMICONDUCTOR CORPORATION
SDH/SONET 10.7Gb/s Electroabsorption Modulator/Laser Diode Driver
Advance Product Information
VSC7991
AC Characteristics (Over recommended operating conditions)
Table 1: High Speed Inputs /Outputs
Symbol
IRL ORL
Parameter
Input Return Loss, 50Ω System Output Return Loss, 50Ω System
Min
Typ
−15 −12...