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A 1.25 Gbps DC-coupled laser diode driver with V_(BE) compensation technique

机译:具有V_(BE)补偿技术的1.25 Gbps直流耦合激光二极管驱动器

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摘要

A 1.25 Gbps integrated laser diode driver (LDD) driving an edge-emitting laser has been designed and fabricated in 0.35 μm BiCMOS technology. The IC can provide independent bias current (5-100 mA) with automatic power control, and modulation current (4-85 mA) with temperature compensation adjustments to minimize the variation in extinction ratio. This paper proposed an unique modulation output driver configuration which is capable of DC-coupling a laser to the driver at + 3.3 V supply voltage; and combined a V_(BE) compensation circuit, the IC can operate at a wide temperature range (-40 to 85℃) for date rates up to 1.25 Gbps, V_(BE) compensation technique is used to compensate for variation in V_(BE) over the opciating temperature range so as to minimize the variations in rise and fall time of modulation output over temperatures.
机译:采用0.35μmBiCMOS技术设计和制造了驱动边缘发射激光器的1.25 Gbps集成激光二极管驱动器(LDD)。该IC可提供具有自动功率控制的独立偏置电流(5-100 mA),以及具有温度补偿调节功能的调制电流(4-85 mA),以最大程度地减小消光比的变化。本文提出了一种独特的调制输出驱动器配置,该配置能够在+ 3.3 V电源电压下将激光器与驱动器进行直流耦合。并结合了V_(BE)补偿电路,该IC可以在宽温度范围(-40至85℃)下工作,数据速率高达1.25 Gbps,采用V_(BE)补偿技术来补偿V_(BE) )在最接近的温度范围内,以最小化调制输出在温度范围内的上升和下降时间的变化。

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