Design of 15 Gb/s inductorless limiting amplifier with RSSI and LOS indication in 65nm CMOS  

作　　者：陈莹梅 Xu Zhigang Wang Tao Zhang Li 

机构地区：[1]Institute of RF- & OE-ICs,Southeast University

出　　处：《High Technology Letters》2014年第1期92-96,共5页高技术通讯（英文版）

基　　金：Supported by the National High Technology Research and Development Programme of China(No.2011AA010301);the National Natural Science Foundation of China(No.60976029)

摘　　要：A limiting amplifier IC implemented in 65nm CMOS technology and intended for high-speed op- tical fiber communications is described in this paper. The inductorless limiting amplifier incorporates 5-stage 8 dB gain limiting cells with active feedback and negative Miller capacitance, a high speed output buffer with novel third order active feedback, and a high speed full-wave rectifier. The re- ceiver signal strength indictor （RSSI） can detect input signal power with 33dB dynamic range, and the limiting amplifier features a programmable loss of signal （LOS） indication with external resistor. The sensitivity of the limiting amplifier is 5.5mV at BER = 10^ -12 and the layout area is only 0.53 × 0.72 mm^2 because of no passive inductor. The total gain is over 41dB, and bandwidth exceeds 12GHz with 56mW power dissipation.A limiting amplifier IC implemented in 65 nm CMOS technology and intended for high-speed optical fiber communications is described in this paper.The inductorless limiting amplifier incorporates5-stage 8 dB gain limiting cells with active feedback and negative Miller capacitance,a high speed output buffer with novel third order active feedback,and a high speed full-wave rectifier.The receiver signal strength indictor(RSSI) can detect input signal power with 33 dB dynamic range,and the limiting amplifier features a programmable loss of signal(LOS) indication with external resistor.The sensitivity of the limiting amplifier is 5.5mV at BER = 10 ^(-12) and the layout area is only 0.53 ×0.72 mm because of no passive inductor.The total gain is over 41 dB,and bandwidth exceeds12 GHz with 56 mW power dissipation.

关 键 词：limiting amplifier receiver signal strength indictor （RSSI） loss of signal（LOS） full-wave rectifier third order active feedback 

分 类 号：TN722[电子电信—电路与系统]