CX02068

Revision Information This document contains information that is subject to change without notice. Contact Technical Publications for latest revision information. CX02068 3.3 Volt Laser Driver IC for 155/622 Mbps The CX02068 is a highly integrated, programmable laser driver intended for Telecom applications up to 622 Mbps. Using differential PECL data, the CX02068 supplies the bias and modulation current for driving an edge-emitting laser. The modulation output can be DC-coupled to the laser diode, giving a significant power saving over ACcoupled operation. The CX02068 includes automatic power control (APC) to maintain a constant average laser output power over temperature and life. In addition, the modulation current is temperature compensated to minimize variation in extinction ratio over temperature. Output flags indicate laser end of life as well as failure of the APC circuitry to maintain average output power. Features Rise and fall times <180 ps Operates with +3.3 volt su...