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.
小白求问那个PCM1807怎么输入信号啊。。。是直接输入声音还是先转换成电压啊
原标题如下：
http://bbs.21ic.com/icview-693298-1-2.html
Hi mmuuss，
PCM1807的输入是模拟的电压信号。
恩，谢谢
通过麦克风接受声音信号后将音频信号使用运放进行放大后输入音频ADC，如果音频ADC芯片有偏置电压输出引脚则是可以直接接麦克风即可
