VSC7923

www.DataSheet4U.com VITESSE SEMICONDUCTOR CORPORATION Preliminary Data Sheet VSC7923 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 SONET/SDH 2.5Gb/s Laser Diode Driver Applications SONET/SDH at 622Mb/s, 1.244Gb/s, 2.488Gb/s, 3.125Gb/s Full-Speed Fibre Channel (1.062Gb/s) 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. VSC7923 Block Diagram IOUT NIOUT MK NMK DIN VREF IMOD VIP IBIAS VIB MIP MIB G52203-0, Rev 3.0 05/11/01 © 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 SONET/SDH 2.5Gb/s Laser Diode Driver Table 1: Signal Pin Reference Signal DIN MK, NMK NIOUT IOUT VSS GND VIP MIP VIB MIB VREF Total Pins VSC7923 Type In Out Out Out Pwr Pwr In In In In In Level ECL ECL # Pins 1 2 1 1 Data Input Description Data Density Differential Ou...