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.
您好 ，我现在使用CD74HC4051做多路模拟输入ADC检测。
芯片供电3.3V，发现当一路输入上拉10K到5V后，模拟切换开关的输出公共端电压变成4V。此时，切换检测不准（比实际电位要高）！
请问这是什么原因？
