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.

关于运放测试的问题

Other Parts Discussed in Thread: OPA1662

   大家好 我是电路小白 最近要做一个音频的采集电路 由于声音的频率是20-20kHz 模拟输入的电压也采取这个段,幅值为2mv  运放采取 OPA1662 电源为+15V和-15V 如下图所示

 可是 输出端的电压却非常小 照理说应该有5倍的增益 

 可实际结果是100pV  求各位大神解答