General Description

The VSC7937 is a single -5.2V supply, 2.5Gb/s voltage driver with direct access to the output modulation and bias FETs. The output stage can drive 60mA into 50Ω with adequate output voltage compliance. Output bias and modulation currents are set by external components allowing precision monitoring and setting of the output voltage levels.

Features

• Typical Rise Times of 100ps

• High-Speed Operation

(Up to 2.5Gb/s NRZ Data)

• 3V Output Voltage Compliance

• Single-Ended or Differential Input Operation

• Single Power Supply: +5V or -5.2V

• Direct Access to Modulation and Bias FETs

• On-Die MUX for Clocked or Unclocked

Applications

• On-Chip 50Ω Input Clock and Data Termination

Applications

• SONET/SDH @ 622Mb/s, 1.244Gb/s, 2.488Gb/s

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