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.
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