运算放大器是当今应用最广泛的模拟组件。可以说，它的基本性质和应用已为大多数电路设计者和制造者所充分理解。然而，对运算放大器的选择依据，在电路中（特别是在精密测量和控制电路中）取得最佳效果的使用技巧，以及各种各样的可能应用，使用者在不同程度上还可能不太十分 Op amps are the most widely used analog component today. It can be said that its basic nature and application have been well understood by most circuit designers and manufacturers. However, the choice of op amp is based on the techniques used to get the best results in the circuit (especially in precision measurement and control circuits), as well as a wide variety of possible applications, and users may, to varying degrees, be less likely very