好吧问答库 > 51单片机AD转换问题

51单片机AD转换问题

2025年03月16日 01:18
有2个网友回答
网友（1）：

一楼正解，不过要把AD作到如此精准，2.5V不识别很困然，AD和温度，基准电压有很大关系，及时在某个温度校准好了，温度一变，都会变，还是用AD模块或者本身就有AD采样的单片机。

网友（2）：

用比较器，将输入信号与2.5V基准电压进行比较，不需要用AD。

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