Laser Diode Driver With Automatic Power Control

The VSC7939 is a single 3.3V or 5V supply Laser Diode driver specially designed for SONET SDH applica- tions up to 3.125Gb/s. External resistors set a wide range of bias and modulation currents for driving the laser. Data and Clock inputs accept differential PECL signals. The Automatic power control (APC) loop maintains a constant average optical power over temperature and lifetime. The dominant pole of the APC loop CAN be con- trolled with an external capacitor. Other features include enable/disable control, short-circuit protection for the modulation and bias inputs, short rise and fall times, programmable slow-start circuit to set laser turn-on delay, and failure-monitor output to indicate when the APC loop is unable to maintain the average optical power. The VSC7939 is available in die form or in a 32-pin TQFP package. By Vitesse Semiconductor Corp
VSC7939 's PackagesVSC7939 's pdf datasheet

VSC7939 Pinout, Pinouts
VSC7939 pinout,Pin out
This is one package pinout of VSC7939,If you need more pinouts please download VSC7939's pdf datasheet.

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