| 一个低噪声轨到轨输入输出范围的运算放大器 |
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| 引用本文： | 邢利东,蔡敏. 一个低噪声轨到轨输入输出范围的运算放大器[J]. 半导体技术, 2006, 31(11): 859-861,870 |
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| 作者姓名： | 邢利东 蔡敏 |
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| 作者单位： | 华南理工大学,物理科学与技术学院,广州,510641;华南理工大学,物理科学与技术学院,广州,510641 |
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| 摘 要： | 设计了一个轨到轨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AB类的输出方法来提高运算放大器的输出范围,并运用双极晶体管比较低的闪烁噪声来改善该运算放大器的噪声性能,以此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 |
| 文章编号： | 1003-353X（2006）11-0859-03 |
| 收稿时间： | 2006-09-13 |
| 修稿时间： | 2006-09-13 |
Low Noise Rail-to-Rail Input and Output Range Operational Amplifier |
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| XING Li-dong,CAI Min. Low Noise Rail-to-Rail Input and Output Range Operational Amplifier[J]. Semiconductor Technology, 2006, 31(11): 859-861,870 |
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| Authors: | XING Li-dong CAI Min |
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| Affiliation: | School of Physics, South China University of Technology, Guangzhou 510641, China |
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| Abstract: | A low noise rail-to-rail input and output range operational amplifier was desighed. In the input stage, current compensation technique was used to give a constant transconductance in the whole common mode input range; in the output stage, a simple class AB output stage was used to improve the output range. The low 1/f noise character of bipolar transistors was used to improve the noise and dynamic range of the operational amplifier. |
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| Keywords: | rail-to-rail transconductance flicker noise operational amplifier dynamic range |
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