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