The MAX3667 is a complete, +3.3V laser driver with automatic power control (APC), designed for SDH/ SONET applications up to 622Mbps. It accepts differential PECL inputs, provides single-ended bias and modulation currents, and operates over a -40°C to +85°C temperature range.

A temperature-stabilized reference voltage simplifies laser current programming. It allows external programming of the modulation current between 5mAP-P and 60mAP-P, and of the bias current between 5mA and 90mA.

The APC function, which incorporates a monitor photodiode, an external resistor, and two external capacitors, maintains constant laser output power. Two current monitors provide high-speed signals that are directly proportional to the bias and modulation currents. Additional features include disable/enable control and a slow-start feature with a minimum turn-on time of 50ns. The MAX3667 is available in die form and in a 32-pin TQFP package.  

Key Features
Single +3.3V or +5.0V Operation
Automatic Average Power Control
Bias Current and Modulation Current Monitor Outputs
TTL-Compatible Disable Input
Temperature-Compensated Reference
PECL-Compatible Data Inputs  

Applications/Uses
622Mbps SDH/SONET Access Nodes
Laser Driver Transmitters
Section Repeaters

See full technical details at http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1796