芯片为DSP2808,16路采样通道每一路的电路如上图所示,ADC_IN1接外部信号,ADC1接DSP,当A1通道输入电压为5V工频信号,B1输入0~2V工频信号时候,A通道的其他路(A1~A7)会产生畸变,而B通道不会受影响。为什么A通道过电压会另A通道其他路产生畸变?
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