| 一种输入轨至轨运算放大器的设计与仿真 |
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| 引用本文： | 石广源,梅当民.一种输入轨至轨运算放大器的设计与仿真[J].辽宁大学学报(自然科学版),2009,36(3):212-215. |
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| 作者姓名： | 石广源 梅当民 |
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| 作者单位： | 辽宁大学,物理学院,辽宁,沈阳,110036 |
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| 摘 要： | 介绍了一种输入轨至轨CMOS运算放大器,该放大器采用了共源共栅结构做增益级,在输入级跨导使用了电流补偿,以使其几乎恒定.在3 V电源电压下的静态功耗只有180μW,带5 p的负载电容时,直流开环增益,单位增益带宽分别达到75 dB,1.5 MHz.
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| 关 键 词： | 轨对轨 放大器 跨导 |
Desigu and Simulate of a Amplifier with Rail to nail Inpat Stage |
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| SHI Guang-yuan,MEI Dang-min.Desigu and Simulate of a Amplifier with Rail to nail Inpat Stage[J].Journal of Liaoning University(Natural Sciences Edition),2009,36(3):212-215. |
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| Authors: | SHI Guang-yuan MEI Dang-min |
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| Institution: | College of Physics;Liaoning University Shenyang 110036 |
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| Abstract: | In this paper,a operational amplifier with rail-to-rail input stage is presented,which adopts a novel kind of current fold cascade circuit as gain stage.It uses current compensation at input stage,which makes transconductance nearly constant.It typically dissipates a power less than 180uw at 3V Vdd.The amplifier achieves an open-loop gain and a unit gain bandwidth higher than 75dB and 1.5Mhz when drive a 5p capacitive load. |
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| Keywords: | rail-to-rail amplifier transconductance |
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