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ADS1298波形突变(溢出)??

Other Parts Discussed in Thread: ADS1298

如下图,[77]-[80]行产生波形突变。请问这是怎么产生的???

[87]行是负数我知道该怎么处理,虽然[77]-[80]行也可以通过软件强行把波形拉上去。

但是我一直想知道是什么原因造成的。

实验条件:

1.  ADS1298内部参考电压2.4V。

2. 增益4。

3.单电源 供电3.3V,右腿参考1.65V。

3. 24bit数据原封不动传输到PC处理。