VSC7937

VITESSE SEMICONDUCTOR CORPORATION Preliminary Data Sheet VSC7937 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 Single Supply 2.5Gb/s Voltage Driver Applications SONET/SDH @ 622Mb/s, 1.244Gb/s, 2.488Gb/s Full-Speed Fibre Channel (1.062Gb/s) 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. VSC7937 Block Diagram NOUT OUT INOUT DIN 50 Ω** DINTERM* 50 Ω** NDIN D Q M U X IBIAS1 IMOD IBIAS2 VIP CLK 50 Ω** CLKTERM* NCLK MIB2 SEL SEL MIP MIB1 50 Ω** VIB2 VIB1 *Terminated to Off-chip Capacitor **On Die Components G52200-0, Rev 3.0 03/05/01 © VITESSE SEMICONDUCTOR CORPORATION 741 Calle Plano Camarillo, CA 93012 Tel: (800) VITESSE FAX: (805) 987-5896 Email: [email protected] Internet: www.vitesse.com Page 1 VITESSE SEMICONDUCTOR CORPORATION Preliminary Data Sheet Single Supply 2.5Gb/s Voltage Driver VSC7937 Electrical Characteristics Table 1: High-Speed I...