General Description
The MAX3668 is a complete, +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.

FEATUREs
♦ Single +3.3V or +5.0V Operation
♦ 38mA Supply Current at +3.3V
♦ Programmable Modulation Current from
   5mA to 75mA
♦ Programmable Bias Current from 1mA to 80mA
♦ Rise/Fall Time <200ps
♦ Automatic Average Power Control with Failure
   Monitor
♦ Complies with ANSI, ITU, and Bellcore
   SONET/SDH Specifications
♦ Enable Control

APPLICATIONs
   622Mbps SDH/SONET Access Nodes
   Laser Driver Transmitters
   Section Regenerators