基于HSPICE的共模反馈全差分运算放大器仿真分析

Simulation Analysis of Common Mode Feedback Fully Differential Operational Amplifier Based on HSPICE

全差分运算放大器因其噪声较低、输出电压摆幅较大,共模噪声抑制及谐波失真抑制性能较好而得到大面积推广应用,HSPICE是目前应用较广的的模拟集成电路设计辅助工具,基于HSPICE对设计的共模反馈全差分运算放大器进行交流参数、直流参数、瞬态特性等主要性能参数进行了仿真分析,仿真分析结果表明,该电路各方面均具有综合良好的特性。

Fully differential operational amplifier has been widely popularization and application because of its low noise,big output voltage swing,and better performance in common mode noise suppression and harmonic distortion suppression.HSPICE is the auxiliary tool for analog integrated circuit design that is used more widely at present.Based on HSPICE,an simulation analysis is made to the main performance such as the AC parameters,DC parameters,instantaneous characteristic of the designed common mode feedback fully differential operational amplifier.The simulation analysis results show that the circuit has good comprehensive characteristics in all aspects.