The MAX3867 is a complete, single +3.3V laser driver for SDH/SONET applications up to 2.5Gbps. The device accepts differential PECL data and clock inputs and provides bias and modulation currents for driving a laser. The synchronizing input latch can be bypassed if a clock signal is not available.
An automatic power control (APC) feedback loop is incorporated to maintain a constant average optical power over temperature and lifetime. The wide modulation current range of 5mA to 60mA and bias current of 1mA to 100mA are easy to program, making this product ideal for use in various SDH/SONET applications.
The MAX3867 also provides enable control, a programmable slow-start circuit to set the laser turn-on delay, and a failure-monitor output to indicate when the APC loop is unable to maintain the average optical power. The MAX3867 is available in a small 48-pin TQFP package as well as dice.
Key Features
Applications/Uses
Single +3.3V or +5V Power Supply
62mA Supply Current at +3.3V
Programmable Modulation Current from 5mA to 60mA
Programmable Bias Current from 1mA to 100mA
Rise/Fall Time < 90ps
Automatic Average Power Control with Failure Monitor
Complies with ANSI, ITU, and Bellcore SDH/SONET Specifications
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Automatic power control, single supply, 90ps edge speed, temperature-compensated reference voltage
Related Products
MAX3890 +3.3V, 2.5Gbps, SDH/SONET 16:1 Serializer with Clock Synthesis and LVDS Inputs MAX3869 +3.3V, 2.5Gbps SDH/SONET Laser Driver with Current Monitors and APC
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