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.
An APC feedback loop is incorporated to maintain a constant average optical power over temperature and lifetime. The wide modulation current range of 5mA to
75mA and bias current of 1mA to 80mA are easy to program, making this product ideal for use in various SDH/SONET applications.
The MAX3668 also provides enable control and a failure-monitor output to indicate when the APC loop is unable to maintain the average optical power. The MAX3668 is available in a 5mm 32-pin TQFP package as well as in dice.
Key Features
Applications/Uses
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
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
†Covered by U.S. Patent numbers 5,802,089 and 5,883,910
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