| 轨到轨输入输出范围运算放大器的噪声分析和优化 |
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| 引用本文： | 权进国,张献英.轨到轨输入输出范围运算放大器的噪声分析和优化[J].中国集成电路,2008,17(5):61-65. |
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| 作者姓名： | 权进国 张献英 |
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| 作者单位： | 1. 清华大学深圳研究生院,深圳
2. 中国网络通信集团有限公司深圳分公司,深圳,518055 |
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| 摘 要： | 这篇文章设计了一个轨到轨（Rail-to-Rail）输入输出范围的低噪声运算放大器,在输入级采用电流补偿的方法来稳定该运算放大器在整个输入共模范围内的跨导,在输出级使用了AB类的输出方法来提高运算放大器的输出范围,且详细分析了该运算放大器的噪声性能,在此基础上给出了改善该运算放大器噪声性能的方法,以此来提高该运算放大器的动态范围。
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| 关 键 词： | 轨到轨 跨导 闪烁噪声 运算放大器 动态范围 |
Noise analysis and improvement of Rail-to-Rail input and output range operational amplifier |
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| QUAN Jin-guo,ZHANG Xian-ying.Noise analysis and improvement of Rail-to-Rail input and output range operational amplifier[J].China Integrated Circuit,2008,17(5):61-65. |
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| Authors: | QUAN Jin-guo ZHANG Xian-ying |
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| Affiliation: | QUAN Jin-guo, ZHANG Xian-ying ( 1.Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; 2.Shenzhen branch of CHINA NETCOM, Shenzhen 518057, China ) |
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| Abstract: | This article gives a low noise Rail-to-Rail input and output range operational amplifier. In the input stage,current compensation technique is used to give a constant transconductance in the whole common mode input range; in the output stage,a simple class AB output stage is used to improve the output range. The noise character of the operational amplifier is analyzed,and the way to improve the noise character of this operational amplifier is given,as can improve the dynamic range of this operational amplifier. |
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| Keywords: | Rail-to-Rail transconductance flicker noise operational amplifier dynamic range |
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