你好,我在使用ads1120读取值时出现了问题,设置采用REFP0 REFN0 分别接地和5v作为参考电压,理论上四个通道单端模式下的峰值应该为5v,寄存器值应该为32767,但我读取的值在25700,3.8v左右就无法继续上升,请问是什么问题导致的。电路和模式配置如下。
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