CMOS峰值检测电路  

CMOS Peak Detector Circuit

作　　者：高松松 王颖[1] 刘云涛[1] 李婷[1] 高嵩[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《微电子学与计算机》2011年第9期73-76,共4页Microelectronics & Computer

基　　金：中央高校基本科研业务费专项资金(GK2080260104;HEUCF110801);黑龙江省自然科学基金项目(QC2009C66)

摘　　要：采用差动运算放大器加电流镜的方法,设计了一种CMOS峰值检测电路,包括峰值电压检测及输入信号过峰时刻甄别两部分.该电路设计基于0.5μm CMOS工艺,实现对峰值电压范围为0～5V,脉冲宽度1～5μs的准高斯信号的精确检测,误差小于6mV。另外,改进了过峰时刻甄别电路,采用了先微分再过零比较的办法,避免了一个准高斯信号输出多个峰值电压.A CMOS peak detection circuit using differential operational amplifier with current mirror is presented,including input signal peak voltage detector and over-peak discriminator.The circuit design is based on 0.5μm CMOS technology,achieving the detection for quasi-Gaussian signal,the range of which peak voltage is 0～5V and the peaking time is 1～5μs,error is less than 6mV.Another improvement is for over-peak discriminator,using first differential then compared with zero in order to avoid one quasi-Gaussian multiple peak voltage output.

关 键 词：CMOS 峰值检测 甄别 0.5μm 

分 类 号：TN78[电子电信—电路与系统]