A 3.125-Gb/s inductorless transimpedance amplifier for optical communication in 0.35μm CMOS

被引：8
|
作者：
徐晖 [1 ]
冯军 [1 ]
刘全 [1 ]
李伟 [1 ]
机构：
[1] Institute of RF-& OE-ICs,Southeast University
来源：
半导体学报 | 2011年 / 32卷 / 10期
基金：
国家高技术研究发展计划(863计划);
关键词：
pre-amplifier; CMOS technology; RGC input stage; DC-cancellation; low power dissipation;
D O I：
暂无
中图分类号：
TN722 [放大器];
学科分类号：
摘要：
A 3.125-Gb/s transimpedance amplifier（TIA） for an optical communication system is realized in 0.35μm CMOS technology.The proposed TIA employs a regulated cascode configuration as the input stage, and adopts DC-cancellation techniques to stabilize the DC operating point.In addition,noise optimization is processed. The on-wafer measurement results show the transimpedance gain of 54.2 dBΩand -3 dB bandwidth of 2.31 GHz.The measured average input referred noise current spectral density is about 18.8 pA/（?）.The measured eye diagram is clear and symmetrical for 2.5-Gb/s and 3.125-Gb/s PRBS.Under a single 3.3-V supply voltage,the TIA consumes only 58.08 mW,including 20 mW from the output buffer.The whole die area is 465×435μm;.
引用
收藏
页码：97 / 102
页数：6
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