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关于ADS1216系统调校、测量问题请教

Other Parts Discussed in Thread: ADS1216

问题1:ADS1216的MUX我选择的差分输入,一端接标准的2.5v,另外一端是接测量信号输入,这样是不是测量信号的输入范围可以是0-5v?

问题2:如果问题1是正确的话,那么我系统增益调校的满刻度输入是用外部加的5V(实际只有4.7v,因为待测信号的变动大概是0.3-4.7v)还是其它的输入信号?