目的:测量运放的共模输入阻抗,被测运放的datasheet中标注的共模阻抗为220G欧姆,请问用何种方法测量。
需要注意什么??谢谢!
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
输入阻抗是通过测量输入端偏置电流得到的,有些运放给出了“输入共模电压”VS“输入偏置电”曲线,可直接通过二者的变化量进行计算,或者说斜率就是运放的输入共模阻抗。