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MAX3668 Description

The MAX3668 is a plete, +3.3V laser driver with automatic power control (APC) circuitry for SDH/SONET applications up to 622Mbps. It accepts differential PECL inputs, provides bias and modulation currents, and operates over a temperature range of -40°C to +85°C. An APC feedback loop is incorporated to maintain a constant average optical power over temperature and lifetime.