本文从普遍性的意义上讨论了非理想运算放大器的交、直流性能,给出了一系列有用的公式和结论。文中还讨论了运算放大器交流线性近似的限制条件及其与压摆率等的关系,叙述了共模频率特性对于交流传输特性的影响,给出了一般文献中有关公式的适用范围,分析了电源噪声抑制、高频增益测量等问题。 In this paper, we discuss the AC and DC performance of non-ideal op amp in the general sense, and give a series of useful formulas and conclusions. The paper also discusses the limiting conditions of the AC linear approximation of op amp and its relationship with the slew rate and so on. It describes the influence of the common-mode frequency characteristics on the AC transmission characteristics, gives the applicable scope of the relevant formulas in the general literature, Noise suppression, high-frequency gain measurement and other issues.