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.

dsp28027,采样问题



A0为采样口,不接入电路时,A0口的电压是多少,0或其他。还有参考电压为内部时,VREFLO要接地,那VREFLO是在芯片外部的那个地方

  • 由于A0为采样口,处于高阻状态, 不接入电路时,A0口的电压回收到外部干扰, 任何电压都有可能. 所以对于模拟输入的采样口, 要避免不接信号.

    还有参考电压为内部时,VREFLO要接地,那VREFLO是在芯片外部的模拟地引脚