论文部分内容阅读
对工作在深度负反馈状态的运算放大器电路,常采用虚短虚断技术得出的理想参数代替实际参数。这种方法忽略了理想模型与实际电路之间的误差。为了知道这个误差给实际运算放大器电路带来的影响,通过将运算放大器电路等效成对应的负反馈系统模型,并计算反馈系数,运用该模型的等效参数来更加近似的分析实际运算放大器电路闭环参数及其稳定性。
For the operational amplifier circuit operating in the state of deep negative feedback, the ideal parameters derived from the imaginary short imaginary breaking technique are often used instead of the actual parameters. This method ignores the error between the ideal model and the actual circuit. In order to know the impact of this error on the actual operational amplifier circuit, the operational amplifier circuit is equivalent to the corresponding negative feedback system model, and the feedback coefficient is calculated, and the equivalent parameters of the model are used to more closely analyze the actual operational amplifier circuit Closed-loop parameters and their stability.