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MAX3669

Maxim
Part Number MAX3669
Manufacturer Maxim
Description +3.3V / 622Mbps SDH/SONET Laser Driver
Published Jun 13, 2005
Detailed Description 19-1575; Rev 0; 10/99 KIT ATION EVALU ABLE IL AVA +3.3V, 622Mbps SDH/SONET Laser Driver with Current Monitors and APC ...
Datasheet PDF File MAX3669 PDF File

MAX3669
MAX3669

Overview
19-1575; Rev 0; 10/99 KIT ATION EVALU ABLE IL AVA +3.
3V, 622Mbps SDH/SONET Laser Driver with Current Monitors and APC General Description Features o o o o o o o o o +3.
3V or +5.
0V Single-Supply Operation 40mA Supply Current at +3.
3V Programmable Bias Current from 1mA to 80mA Programmable Modulation Current from 5mA to 75mA Bias Current and Modulation Current Monitors 200ps Rise/Fall Time Automatic Average Power Control with Failure Monitor Complies with ANSI, ITU, and Bellcore SONET/SDH Specifications Enable Control MAX3669 The MAX3669 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 from -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 from 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.
Two pins are provided to monitor the current levels in the laser: BIASMON with current proportional to laser bias current, and MODMON with current proportional to laser modulation.
The MAX3669 also provides enable control and a failuremonitor output to indicate when the APC loop is unable to maintain the average optical power.
The MAX3669 is available in a 5mm 32-pin TQFP package as well as in dice.
Ordering Information PART MAX3669EHJ MAX3669E/D TEMP.
RANGE -40°C to +85°C (Note A) PIN-PACKAGE 32 TQFP (5mm x 5mm) Dice* Applications 622Mbps SDH/SONET Access Nodes Laser Driver Transmitters Section Regenerators Note A: Dice are designed to operate over a -40°C to +140°C junction temperature (Tj) range, but are tested and guaranteed at TA = +25°C.
*Contact factory for availability.
Pin Configuration appears at end of data sheet.
Typical Application Circuit +3.
3V +3.
3V LASER ENABLE FAIL VCC R6.
3Ω OU...


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