原理图如上,这种情况下测得输出有25mv左右,这个是怎么造成的?
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.
从offset上看,105倍的放大,假设最大250uV的offset,那么差不多就是25mV。
另外一个从供电上看,你单电源供电,输出不可能完全到0的,肯定会比VEE高一点。