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2.5 Gb/s宽动态范围光接收机前端放大电路设计 被引量:2

Design of 2.5 Gb/s Wide Dynamic Range Optical Receiver Front-end
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摘要 基于UMC 0.18μm CMOS工艺,设计了一种2Gb/s传输速率的宽动态范围光接收机前端放大电路。采用对数放大器来增大接收机的输入动态范围,前置放大器采用差分共源跨阻放大器,并使用有源电感做负载来增大带宽。实验结果表明:该接收机前端电路的增益为80dB,3dB带宽为2.3GHz,2.5Gb/s输出眼图良好,输入动态范围为60dB(1μA~1mA)。 An amplifying circuit for the wide dynamic range optical receiver front-end with a transmission rate of 2 Gb/s is designed by using UMC 0.18 μm CMOS technology.A logarithmic amplifier is applied to increase the input dynamic range of the optical receiver,a differential common source transimpedance amplifier is used as the pre-amplifier and the active inductor load is used to increase the bandwidth.Experimental results show that the gain of the front-end is 80 dB,the 3 dB bandwidth is 2.3 GHz,the output diagram at bit rate of 2.5 Gb/s is good,and the input dynamic range is 60 dB(1 μA-1 mA).
出处 《半导体光电》 CAS CSCD 北大核心 2012年第6期863-865,874,共4页 Semiconductor Optoelectronics
基金 国家自然科学基金项目(61036002)
关键词 光接收机 动态范围 对数放大器 跨阻放大器 CMOS optical receiver dynamic range logarithmic amplifier transimpedance amplifier CMOS
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参考文献7

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二级参考文献12

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共引文献21

同被引文献13

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