一种28 Gb/s无电感限幅放大器设计  

The design of a 28 Gb/s inductorless limiting amplifier

作　　者：徐晓宇 林福江 Xu Xiaoyu;Lin Fujiang(School of Microelectronics,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学技术大学微电子学院,安徽合肥230026

出　　处：《信息技术与网络安全》2020年第4期68-72,共5页Information Technology and Network Security

摘　　要：基于TSMC 40 nm CMOS工艺,提出了一种28 Gb/s无电感器限幅放大器设计。设计采用一种改进的交织有源反馈(interleaving active feedback)技术扩展电路带宽。直流失调消除电路采用一种改进的低通负反馈技术衰减直流失调电压。蒙特卡洛仿真结果表明限幅放大器输出端的直流失调电压均值为200.1μV,标准差为5.8 mV。在1 V的电源电压下,限幅放大器增益为39 dB,带宽为30.2 GHz,输入灵敏度为2.7 mVpp,误码率为10^-12。限幅放大器不包括输出缓冲器的功耗为37.7 mW。This paper presents a 28 Gb/s inductorless limiting amplifier that uses an improved interleaving active feedback technique to extend bandwidth in 40 nm CMOS technology.DC offset voltage cancellation circuit uses an improved low-pass negative feedback technique to attenuate the offset voltage.Monte Carlo simulation results show that the standard deviation of the DC offset voltage at the output of the limiting amplifier is 5.8 mV,and the mean value is 200.1μV.The limiting amplifier achieves a gain of 39 dB,a bandwidth of 30.2 GHz and input sensitivity of 2.7 mVpp for a bit error rate of 10^-12,and the limiting amplifier exclude output buffer consumes 37.7 mW at a supply voltage of 1 V.

关 键 词：限幅放大器 直流失调消除 交织有源反馈 带宽拓展技术 

分 类 号：TN722[电子电信—电路与系统]