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一种有电压补偿电路的高性能低压CFOA及其小信号分析

A High-performance CMOS Current-Feedback Operational Amplifiers with a Compensation Circuit and It's Small-signal Analysis
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摘要 提出了一种新型的电流反馈型运算放大器,该电路所具有的电压补偿电路克服了以往基于CMOS的CFOA两个输入端静态条件下不平衡的缺点,NMOS与PMOS互补的输入结构提高了电路的信噪比。采用0.6μm工艺参数(低阈值),1.5V电源电压,利用HSPICE进行了仿真,获得了4.95mW的功耗,4.5 kΩ的输入电阻,53.5°的相位裕度以及与增益无关的带宽和极大的转换速率。 A new style CFOA was proposed,the compensation circuit eliminate the imbalance between the two input in static condition, the PMOS and NMOS complementary input structure enhance SNR,Simulation with 0.6 μm CMOS process parameters（low Vth） ,result in a high SR as well as bandwidth gain-independence.
作者 胡磊 曾云
机构地区 湖南大学微电子研究所
出处 《宇航计测技术》 CSCD 2009年第3期54-57,共4页 Journal of Astronautic Metrology and Measurement
基金 湖南省自然科学基金计划资助(No.05JJ30115)
关键词 电流反馈型 放大器互补输入低压 Current-Feedback Operational Amplifier Complementary input structure Low Voltage
分类号 TN722.75 [电子电信—电路与系统] TP212 [自动化与计算机技术—检测技术与自动化装置]
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参考文献11

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二级参考文献8

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共引文献8

宇航计测技术
2009年 第3期

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