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ADS1299: 采集数据幅度还原不了

Part Number: ADS1299


我输入一个2mv 1hz 的正玄波信号,但是输出的信号是一个83mv 1hz 左右的信号,输出信号跟输入信号的频率相位一致,但是输出幅值大了40多倍,具体情况如下图所示;

我的硬件设计是参考openbic开源设计,下面是我的寄存器配置代码