模拟采集的问题求教.

只看该作者 · 2008-7-1 13:58

我现做了个模拟采集电路,但是ADC采集出来的结果稳定度不够.数据如下:

其中,第一个Y值是计算后的到的标量值第二个是采集值.
ADC为24位的积分式 ADS1211,内部数字滤波的截止频率为850Hz.模拟电源纹波主要集中在+ -2mV 偶尔会有+ -5mV的躁声 .0.03的变动对应电压为0.0005V

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