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.
如果我在OPA2227前加一个无源LC低通滤波器，滤波器应该按什么阻抗来设计呢？OPA2227的输入阻抗很高，按这个输入阻抗设计无源滤波器（比如巴特沃斯滤波器）不现实。
亲，按复阻抗计算即可。即电感阻抗为角频率与电感量之积，电容阻抗为角频率与电容积的倒数。
