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.

线性运放正常供电,无输入信号时,输入引脚却检测到直流电平?

Other Parts Discussed in Thread: OPA228

不止一款芯片出现过该情况,比如8脚的opa228做个简单的跟随器,没有信号给入同向输入端时,竟也能在同向输入端检测到有直流电平近2V存在。后来,尝试仅给芯片供电,其他引脚不做任何处理和连接,仍有直流电平存在,求解释!!!