[1]刘敏侠,田泽,邵刚.高增益轨对轨运算放大器的设计实现[J].计算机技术与发展,2013,(08):152-156.
　LIU Min-xia,TIAN Ze,SHAO Gang.Design and Implementation of High Gain Rail-to-rail Operational Amplifier[J].,2013,(08):152-156.
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高增益轨对轨运算放大器的设计实现()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2013年08期
页码:
152-156
栏目:
应用开发研究
出版日期:
1900-01-01

文章信息/Info

Title:
Design and Implementation of High Gain Rail-to-rail Operational Amplifier
文章编号:
1673-629X（2013）08-0152-05
作者:
刘敏侠; 田泽; 邵刚
中国航空计算技术研究所
Author(s):
LIU Min-xia; TIAN Ze; SHAO Gang
关键词:
轨对轨; 增益; 共源共栅; 运算放大器
Keywords:
rail-to-rail; gain; cascode; operational amplifier
文献标志码:
A
摘要:
为提高运放性能和增大输入输出信号动态范围,往往采用轨对轨输入输出结构的运放。介绍了一款基于0.35umCMOS工艺设计的恒定跨导轨对轨输入/输出运算放大器,不同于传统的输入结构,该电路采用了一种改进的输入结构和CLASSAB输出结构,两级的折叠共源共栅运放,其输入和输出均能工作在轨对轨的范围内。仿真结果表明该电路在整个共模电平范围内直流增益大于90dB,输出摆幅可达到100mV~vdd-100mV,功耗仅为300uW。电路结构简单紧凑,实现了在整个共模电平范围内的高增益,可广泛应用于精密放大领域
Abstract:
In order to improve the performance of the operational amplifier and augment the dynamic range of input and output signal,rail-to-rail input and output structure is used commonly. The operational amplifier with constant transconductance,rail-to-rail input and output was designed based on 0. 35um CMOS process. The amplifier is different from traditional input structure,it takes an improved in-put and CLASS AB output structure,and the two stage folded cascade structure is also considered. The input and output of amplifier can be worked in the range of rail-to-rail station. The simulation results demonstrate DC gain is larger than 90dB in the range of the whole common mode,and its slew rate can be reach to100mV~vdd-100mV,but the power is only 300uW. For its simple and compact struc-ture,this op-amp can reach to high gain in the range of whole common mode and it is suitable for precision amplify field
更新日期/Last Update: 1900-01-01