参考电压是2.5V,ADC供电是0-4.5V,单端采集的电压为0.671V,如果切换到外部ADC输入(外部PGA设置的是2倍),电压读数就是0.44V,不知道是哪里出了问题
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.