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.

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

• Ful-Speed Fibre Channel (1.062Gb/s)