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ADS1013采集运放输出数据,一段时间后变的很低。

Other Parts Discussed in Thread: ADS1013

我用ADS1013采集AD8237运放输出直流数据,开始采集得到的原始数据为683,对应1.3v。一段时间后大概5-9分钟,ads1013读出来的数据变成11,对应0.02v,然后不再发生变化。需要系统复位ADS1013采集的数据才会变成683,但过了一段时间还是会出现相同的问题。这是为什么?