| 一种低压、恒增益Rail-to-rail运算放大器的设计 |
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| 引用本文： | 龚正辉,常昌远.一种低压、恒增益Rail-to-rail运算放大器的设计[J].电子与封装,2007,7(10):37-39,43. |
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| 作者姓名： | 龚正辉 常昌远 |
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| 作者单位： | 东南大学集成电路学院,南京,210096;东南大学集成电路学院,南京,210096 |
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| 摘 要： | 文章设计了一种低压、恒定增益、Rail-to-rail的CMOS运算放大器。该放大器采用直接交迭工作区的互补并联输入对作为输入级,在2V单电源下,负载电容为25pF时,静态功耗为0.9mW,直流开环增益、单位增益带宽、相位裕度分别为74dB、2.7MHz、60°。
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| 关 键 词： | 轨到轨 恒增益 CMOS运算放大器 |
| 文章编号： | 1680-1070（2007）10-0037-03 |
| 修稿时间： | 2007-05-22 |
Design of a Low Voltage, Constant Gain, Rail-to-rail Operational Amplifier |
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| GONG Zheng-hui,CHANG Chang-yuan.Design of a Low Voltage, Constant Gain, Rail-to-rail Operational Amplifier[J].Electronics & Packaging,2007,7(10):37-39,43. |
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| Authors: | GONG Zheng-hui CHANG Chang-yuan |
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| Affiliation: | College oflntegrated Circuits Southeast University, Nanjing 210096, China |
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| Abstract: | A low voltage, constant gain , rail-to-rail, CMOS operational amplifier has been designed in this paper. A overlapped parallel input stage was used in the amplifier. It's static power depletion is about 0.9mW, dc gain is 74 dB, GBW is 2.7MHz, phase margin is 60°when the power supply is 2V, and load capacitor is 25pF. |
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| Keywords: | Rail-to-rail constant gain CMOS operational amplifier |
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