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ADS1259采样数据问题

Other Parts Discussed in Thread: ADS1259

你好,我ADS1259进行信号采样,使用外部基准源,输入的是差分信号。不知为何,获取的数值总是单端,事实上我已经开启了AINP - AINN的偏置电压。

比如输入电压    AINP - AINN  < 0 时转换的数值应当     < 0x7fffff ,事实上结果却是该AINP 的单端电压值。还请各位大侠指教一二,谢谢!