输入失调电流

R2和R4用来降低因输入失调电流产生的误差，其原理与前文光电二极管放大器所述一致。

R2 and R4 are chosen to minimize errors due to input offset current as outlined in the section describing the photocell amplifier .

指出在高等院校工科电气电子类模拟电子技术课程常用教材和参考书中关于模拟集成运算放大器输入失调电流IIO的定义不一致的问题。

This article points out the difference in the definition of input offset current about analog Integrated Operational Amplifier Circuit ( IOAC ) in common teaching material for analog electronics .

通过讨论输入失调电流对集成运算放大器输出的影响，推导出集成运算放大器外围阻抗的最佳取值关系。

After discussing how the input offset current influences the output of operational amplifier , the optimal relationship between peripheral impedance is obtained .

从集成运放输入失调电压、偏置电流及其漂移、集成运放增益和带宽、温度变化对积分电路的影响3个方面分析了传统的模拟积分器对测量精度的影响，并总结出了误差公式。

The influence of traditional analog integrator on measuring precision is analyzed from three aspects of integrated operational amplifier : the maladjusted input voltage , bias current and its drift , the gain and band width and the temperature change . The error formula is summarized .

实验结果表明该测试仪能准确测量运算放大器的输入失调电压、输入失调电流、交流差模开环电压增益和交流共模抑制比等参数。

Experimental results show that the device can precisely measure many parameters of IOA , such as input offset voltage , input offset current , open loop differential AC voltage gain and AC common mode rejection ratio .