集成运算放大器常应用在信号处理（如高精度整流电路、模拟乘法器应用电路、有源滤波电路和电压比较器电路等）、信号发生（如方波及锯齿波发生器电路）和信号变换（如压控振荡器电路）等方面电路，在控制、测量、仪表等领域中占有重要地位．根据线性集成运放的“虚短”和“虚 Integrated operational amplifiers are often used in signal processing (such as high precision rectification circuits, analog multiplier application circuits, active filter circuits and voltage comparator circuits, etc.), signal generation (such as square wave and sawtooth generator circuits) and signal transforms Voltage-controlled oscillator circuit) and other aspects of the circuit, in the control, measurement, instrumentation and other fields occupy an important position. According to the linear integrated op amp’s “virtual short” and "virtual