看官方的手册，这个1.15V是3V的VDD下的数值。并不代表vdd为其他电压的时候也是这么大。但是手册也有有4mv/V的变化量，所以怀疑是不是你电源和板子的问题。不应该有那么大的误差的。还有是你读数和计算方式的问题，你是如何读取的了，列出详细的步骤
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