VSC7991

www.DataSheet4U.com VITESSE SEMICONDUCTOR CORPORATION Advance Product Information VSC7991 Features Maximum Rise/Fall Times of 38ps High-Speed Operation (Up to 10.7Gb/s NRZ Data) Differential Inputs SONET/SDH 10.7Gb/s Electroabsorption Modulator/Laser Diode Driver Single-Supply CML-Compatible Data Inputs On-Chip 50Ω Input Terminations 50Ω Output Impedance General Description The VSC7991 is a single 7V supply, 10.7Gb/s Electroabsorption Modulator (EAM)/laser diode driver with direct access to the laser modulation FETs. Laser offset and modulation currents are set by external components allowing precision monitoring and setting of the voltage levels. Data inputs are differentially terminated to 50Ω. Applications SONET/SDH @ 2.488Gb/s, 9.952Gb/s, 10.7Gb/s VSC7991 Block Diagram 60Ω(1) 60Ω(1) 50Ω(1) DIN 50Ω(1) NDOUT DOUT 300Ω(1) NDIN DCC Note: (1) On-die components. VIP IMOD 300Ω(1) IB IBN IP G52321-0, Rev 2.3 02/26/01 © 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 www.DataSheet4U.com VITESSE SEMICONDUCTOR CORPORATION SDH/SONET 10.7Gb/s Electroabsorption Modulator/Laser Diode Driver Advance Product Information VSC7991 AC Characteristics (Over recommended operating conditions) Table 1: High Speed Inputs /Outputs Symbol IRL ORL Parameter Input Return Loss, 50Ω System Output Return Loss, 50Ω System Min Typ −15 −12...