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+3.3V, 622Mbps SDH/SONET Laser Driver with Automatic Power Control

Lowest-Power 622Mbps Laser Driver

Product Details

Key Features

Simplified Block Diagram

Technical Docs

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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Key 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/Uses

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

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.

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.

Simplified Block Diagram

MAX3668: Typical Operating Circuit MAX3668: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.