UX2208 :155Mbps to 622Mbps Laser Driver

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UX2208 :155Mbps to 622Mbps Laser Driver
Posting date : Apr 24, 2008
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85-
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The UX2208 is a complete CMOS laser driver for 155Mbps to 622Mbps.It consists of a bias current generator with automatic power control (APC), a modulation current driver and a reference voltage generator with temperature compensation. The UX2208 accepts differential PECL inputs and provides complementary output currents. The APC feature allows an optical transmitter to maintain constant average optical power by a monitor photodiode, despite changes in laser efficiency with temperature and lifetime. A temperature stabilized reference voltage is provided to simplify laser current programming. Utilizing a resistor at the IMODTC pin can compensate the reduction in slope efficiency of typical laser diodes caused by increased temperature.

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