| LDO线性稳压器中高性能误差放大器的设计 |
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| 引用本文： | 孙毛毛,冯全源.LDO线性稳压器中高性能误差放大器的设计[J].微电子学,2006,36(1):108-110. |
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| 作者姓名： | 孙毛毛 冯全源 |
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| 作者单位： | 西南交通大学,微电子研究所,四川,成都,610031 |
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| 基金项目： | 国家自然科学基金资助项目(60371017)，四川省学术和技术带头人资助项目 |
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| 摘 要： | 设计了一个共源共栅运算跨导放大器,并成功地将其应用在一款超低功耗LDO线性稳压器芯片中。该设计提高了电源抑制比(PSRR),并具有较高的共模抑制比(CMRR)。电路结构简单,静态电流低。该芯片获得了高达99 dB的电源抑制比。
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| 关 键 词： | 共源共栅 差分运算跨导放大器 电源抑制比 低压差线性稳压器 |
| 文章编号： | 1004-3365（2006）01-0108-03 |
| 收稿时间： | 2005-05-08 |
| 修稿时间： | 2005-05-082005-07-05 |
Design of High Performance OTA for LDO Regulators |
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| SUN Mao-mao,FENG Quan-yuan.Design of High Performance OTA for LDO Regulators[J].Microelectronics,2006,36(1):108-110. |
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| Authors: | SUN Mao-mao FENG Quan-yuan |
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| Affiliation: | Institute of Microelectronics , Southwest Jiaotong University, Chengdu, Sichuan 610031, P, R. China |
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| Abstract: | A cascode operational transconductance amplifier(OTA) is designed,which was integrated into an ultra-low power LDO regulator chip.Simulation shows that the power supply rejection ratio(PSRR) of the circuit has been greatly improved,and high common mode rejection ration(CMRR) has been achieved for the cascode OTA.With a simple structure,the circuit has a low quiescent current and the PSRR of the chip reaches up to 99 dB. |
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| Keywords: | Cascode Differential OTA PSRR LDO regulator |
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