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ADS1271 读数不稳定,怎么解决?

Other Parts Discussed in Thread: ADS1271

刚接触 ADS1271,发现读出的数据有 2000个码的波动,就算把 AINP、AINN 全部短接到 VREFP 上也还是有 200个码的波动,用的基准是 ADR361(2.5V),AVDD接模拟 5V,DVDD接数字 3.3V,AGNG与DGND在板子上用 0Ω电阻接起来,求专家帮忙看看我这个电路有没有什么问题?