采用增益提高技术的两级放大器的设计
Modern Electronics Technique（2013）
Abstract
基于chartered 0.35μm工艺,采用PMOS管作为输入管的折叠式共源共栅结构,设计了一种采用增益提高技术的两级运算放大器。利用Cadence公司的spectre对电路进行仿真,该电路在3.3 V电源电压下具有125.8 dB的直流开环增益,2.43 MHz的单位增益带宽,61.2°的相位裕度,96.3 dB的共模抑制比。
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Key words
low-voltage current mirror,folded cascode,gain boosting technology,operational amplifier
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