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VSC7937

ETC
Part Number VSC7937
Manufacturer ETC
Description Single Supply 2.5Gb/s Voltage Driver
Published Apr 16, 2005
Detailed Description VITESSE SEMICONDUCTOR CORPORATION Preliminary Data Sheet VSC7937 Features • Typical Rise Times of 100ps • High-Speed O...
Datasheet PDF File VSC7937 PDF File

VSC7937
VSC7937

Overview
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: prodinfo@vitesse.
com 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 Inputs and ECL Outputs VSS = -5.
2V, RL = 50Ω at IOUT pin Symbol VIN VCM VOH VOL VIN INOUT Parameter Single-Ended Input Voltage Swing Differential Input Common-Mode Range ECL Output HIGH Voltage ECL Output LOW Voltage On-Chip Terminations Maximum Peak Current (1) Min 300 -2.
3 -1200 Typ — — — — — — Max 1500 -1.
3 Units V mV mV Ω mA Conditions VSS = -5.
2V 50Ω to -2.
0V 50Ω to -2.
0V VIP = VSS + 1.
4V VIB1 = -5.
2V VIB2 = -5.
2V DIN = LOW VIP = -4.
1V VIB1 = -5.
2V VIB2 = -5.
2V DIN = HIGH 20% to 80% V...


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