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ads1220如何使用外部电源作为基准?

Other Parts Discussed in Thread: ADS1220

ads1220如何使用外部电源作为基准?

我想测量0--5V,VDDA=5v,如果我想使用模拟电源为基准,是不是设置寄存器VREF[1:0]=11: 用作基准的模拟电源 (AVDD – AVSS)就可以了?这样设置是不是就设置avdd为refp,avss为refn?

其他还需要设置什么吗