Novel pre-equalization transimpedance amplifier for 10 Gb/s optical interconnects  

作　　者：宋奇伟 毛陆虹 谢生 康玉琢 

机构地区：[1]School of Electronic Information Engineering,Tianjin University [2]Inspur (Beijing) Electronic Information Industry Co.Ltd

出　　处：《Journal of Semiconductors》2015年第7期114-118,共5页半导体学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Nos.61036002,61474081)

摘　　要：This paper presents a modified regulated cascode （RGC） transimpedance amplifier （TIA） with a novel pre-equalized technique. The pre-equalized circuit employed the broadband series inductive Jr-network and Gin- boosting technique. The introduction of this technique compensates the transferred signal at the input port of the TIA without an increase in power dissipation. Furthermore, a novel miller capacitance degeneration method is designed in the gain stage for further bandwidth improvement. The TIA is realized in UMC 0.18 μm CMOS technology and tested with an on-chip 0.3 pF capacitor to emulate a photodetector （PD）. The measured transimpedance gain amounts to 57 dBf2 with a -3 dB bandwidth of about 8.2 GHz and consumes only 22 mW power from a single 1.8 V supply.This paper presents a modified regulated cascode （RGC） transimpedance amplifier （TIA） with a novel pre-equalized technique. The pre-equalized circuit employed the broadband series inductive Jr-network and Gin- boosting technique. The introduction of this technique compensates the transferred signal at the input port of the TIA without an increase in power dissipation. Furthermore, a novel miller capacitance degeneration method is designed in the gain stage for further bandwidth improvement. The TIA is realized in UMC 0.18 μm CMOS technology and tested with an on-chip 0.3 pF capacitor to emulate a photodetector （PD）. The measured transimpedance gain amounts to 57 dBf2 with a -3 dB bandwidth of about 8.2 GHz and consumes only 22 mW power from a single 1.8 V supply.

关 键 词：pre-equalized Gm-boosting series inductive re-network miller capacitance degeneration 

分 类 号：TN722[电子电信—电路与系统] TN929.1