General Description

The VSC7924 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. Data inputs accept ECL levels. Data density outputs are provided to allow the user to adjust the laser bias in high unbalanced data applications.

Features

• Rise Times Less Than 100ps

• High-Speed Operation

(Up to 2.5Gb/s NRZ Data)

• Single-Ended Operation

• Single Power Supply

• Direct Access to Modulation and Bias FETs

• Data Density Monitors

• 24-Pin Ceramic Package

Applications

• SONET/SDH at 622Mb/s, 1.244Gb/s, and 2.488Gb/s

• Full-Speed Fibre Channel (1.062Gb/s)