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基于嵌入式密勒补偿技术的LDO放大器设计 被引量:7

Low Dropout Operation Amplifier
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摘要 利用嵌入式密勒补偿技术,我们设计了一种应用于LDO的高性能放大器。在保证良好的相位裕度和稳定增益带宽的条件下,该放大器还具备高增益和较高的电源抑制比。结果表明:在3V工作电压下,其直流开环增益AV=87dB,增益带宽GB=12MHz,相位裕度=63°,电源抑制比PSRR=72.6dB。 A high performance CMOS two-stage operational amplifier with high open loop、high PSRR and nested Miller frequency compensation is presented on the basis of the analysis of traditional circuits. With the normal loads, an open-loop gain(AV)of 87dB,a unity gain bandwidth(GB)of 12MHz,a phase margin( )of 63°,and a power supply rejection ratio(PSRR)72.6dB have been achieved for a VDD of 3V.
出处 《微电子学与计算机》 CSCD 北大核心 2006年第3期198-200,共3页 Microelectronics & Computer
基金 国家自然科学基金项目(60371017) 四川省学术和技术带头人项目
关键词 LDO 频率补偿 放大器 电源抑制比 LDO, Frequency compensation, Amplifier, PSRR
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参考文献6

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共引文献6

同被引文献40

  • 1郑朝霞,邹雪城,邵轲,李阳.电流型PWM DC-DC升压转换器的稳定性分析与实现[J].微电子学与计算机,2006,23(6):229-232. 被引量:15
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