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基于最小电流选择的运算放大器设计 被引量：1

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摘要 设计了一种工作电压为3V恒跨导满幅CMOS运算放大器,针对轨对轨输入级中存在的跨导不恒定和简单AB类输出级性能偏差这2个问题,提出了利用最小电流选择电路来稳定输入级的总跨导;浮动电流源控制的无截止前馈AB类输出级实现了运放的满幅输出,同时减小了交越失真。该电路通过HSpice进行仿真验证,在0～3V输入共模范围内,输入级跨导的变化小于3.3%,开环增益为93dB,单位增益带宽为8MHz,相位裕量为66°。
作者 王磊 崔智军
机构地区 安康学院
出处 《现代电子技术》 2012年第4期152-155,162,共5页 Modern Electronics Technique
基金 陕西省教育厅科学研究计划资助项目(07JK176) 安康学院重点学科支持项目(AYZD201001) 安康学院高层次人才科研专项项目(AYQDZR200919)
关键词 最小电流选择 恒跨导 满幅 运算放大器
分类号 TN7 [电子电信—电路与系统]
  • 相关文献

参考文献12

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共引文献6

同被引文献15

  • 1翟艳,杨银堂,朱樟明,王帆.基于0.25μm CMOS工艺的1.8V Rail-to-Rail运算放大器[J].电路与系统学报,2004,9(5):107-109. 被引量：6
  • 2肖本,吴玉广.基于SOC应用恒定跨导Rail-to-Rail CMOS运算放大器[J].电子器件,2006,29(3):710-713. 被引量：1
  • 3陈斯,恽廷华.采用最大电流选择的恒定跨导Rail-to-RailCMOS运放输入级[J].电路与系统学报,2006,11(6):120-123. 被引量：5
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现代电子技术
2012年 第4期

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