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VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Data Sheet
VSC7925
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
SONET/SDH 2.5Gb/s Laser Diode Driver
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 monitoring and setting of the current levels.