CX60077

Network Access Division Data Sheet CX60077 2.5 Gbps Long Haul Laser Driver Key Features Single supply : -5.2 Volts CML interface (with capability of receiving ECL level) Low power consumption ≤ 400 mW Input impedance of 50 Ω Loss of input data detection Pulse and bias current monitors 1 to 80 mA laser diode bias current 5 to 80 mA pulse current range Applications Fiber-optic communication systems (OC-48) SONET/SDH test equipment Product Description The CX60077 is a high-speed laser driver designed for use in a transmitter module for fiber-optic communications, such as Synchronous Optical Network (SONET), Synchronous Digital Hierarchy (SDH), Asynchronous Transfer Mode (ATM), and Dense Wavelength Division Multiplexer (DWDM). This device can achieve a maximum output drive current of 80 mA into a 25 Ω load. Figure 1 illustrates the functional block diagram, and Table 1 lists terminal descriptions. The CX60077 is available in a 32-pin flat pack, which is illustrated in Figures 10 and 11. Figure 1. CX60077 Functional Block Diagram DutyCntl DataIn VTTD ClockIn VTTC LOSTest Input Buffers 50Ω w 50Ω w .D w t a S a e h t e U 4 .c m o IBCntl IBMon DC Bias Current Cntlr IBOut IPCntl Retime FF 2:1 MUX Duty Cycle Cntlr Pulse Current Driver IPoutP IPoutN IPMon Loss of Signal Detect VBB Level Select LOS VBBSel RetimDis Rev. 2d, 10/26/00. The information provided in this Data Sheet is PRELIMINARY and is subject to change without notice. Con...