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VSC7923 Datasheet, PDF (1/14 Pages) Vitesse Semiconductor Corporation – SONET/SDH 2.5Gb/s Laser Diode Driver
VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Data Sheet
VSC7923
SONET/SDH 2.5Gb/s Laser Diode Driver
Features
• Rise Times Less Than 100ps
• High Speed Operation (Up to 2.4Gb/s NRZ Data)
• Single-Ended or Differential Input Operation
• Single Power Supply
• Direct Access to Modulation and Bias FETs
• Data Density Monitors
Applications
• SONET/SDH at 622Mb/s, 1.244Gb/s,
2.488Gb/s, 3.125Gb/s
• Full-Speed Fibre Channel (1.062Gb/s)
General Description
The VSC7923 is a single 5V supply, 2.4 Gb/s laser diode driver with direct access to the laser modulation and
bias FET’s. Laser bias and modulation currents are set by external components allowing precision monitoring
and setting of the current levels. Data inputs accept ECL levels. Data density outputs are provided to allow the
user to adjust the laser bias in high unbalanced data applications.
VSC7923 Block Diagram
IOUT NIOUT
DIN
VREF
MK
NMK
VIP
IMOD
IBIAS
VIB
MIP
MIB
G52203-0, Rev 3.0
05/11/01
© 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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