2 Replies Latest reply on Dec 20, 2017 3:38 AM by rubenpadial_1501891

    ADC DMA Filter 16bits. Noise in VDD/2

    rubenpadial_1501891

      Hello,

      I'm trying to configure a filter with 16 bits data from an ADC DelSig. I have configured the coherency to MID in the ADC and the filter and the "dalign" is enabled in the filter. I think that I have configured the DMA properly. Howver when I see the data filtered, it have some noise. Originally I was reading a sensor wih the ADC but later I have try with a potenciometer with the same result.The noise appear when the voltage cross VDD/2. What could be the problem? Thank you

      FIR900HzPot.pngFIR900HzPot2.png

      FIR900HzPot.png