一种低功耗的高速光接收器跨阻前置电路设计  

A Low-Power High-Speed Optical Receiver Transresistance Front End Circuit Design

作　　者：商红桃[1] SHANG Hongtao(Jiangsu Union Technical Institute,Changzhou Liu Guojun Branch,Changzhou Jiangsu 213025,China)

机构地区：[1]江苏联合职业技术学院常州刘国钧分院,江苏常州213025

出　　处：《电子器件》2018年第1期50-55,共6页Chinese Journal of Electron Devices

基　　金：江苏省高等学校"青蓝工程"优秀青年骨干教师培养对象项目(苏教师[2014]23号)

摘　　要：为了降低芯片面积和功耗,提出了一种10 Gbyte/s光接收器跨阻前置放大电路。该电路采用了两个带有可调共源共栅(RGC)输入的交叉有源反馈结构,其中的跨阻放大器未使用电感,从而减少了芯片的总体尺寸。该跨阻前置电路采用0.13μm CMOS工艺设计而成,数据速率高达10 Gbyte/s。测试结果表明,相比其他类似电路,提出的电路芯片面积和功耗更小,芯片面积仅为0.072 mm^2,当电源电压为1.3 V时,功率损耗为9.1 mW,实测平均等效输入噪声电流谱密度为20 pA/(0.1~10)Hz,且-3 dB带宽为6.9 GHz。n order to reduce the chip area and power consumption,a 10 Gbyte/s optical receiver transimpedance preamplifier is proposed.The circuit is composed of two cross active feedback systems with regulated-cascode(RGC)input structure,which is composed of a cross resistance amplifier without inductor,a limiting amplifier and an output buffer.The transimpedance circuit is designed with 0.13μm CMOS process,data rates up to 10 Gbyte/s.Test results show that,compared with other similar circuits,the proposed circuit chip area and power consumption are smaller,the chip area only 0.072 mm 2.When the power supply voltage is 1.3 V,the power loss is 9.1 mW,the measured average equivalent input noise current spectral density is 20 pA/(0.1 Hz^10 Hz)and the-3 dB bandwidth is 6.9 GHz.

关 键 词：光接收器 CMOS前置电路 跨阻放大器 可调共源共栅(RGC) 

分 类 号：TN256[电子电信—物理电子学]