Hey folks,
I am using the ADS1258 to gather data from 16 different sensors. I'm in bipolar configuration with +2.5V AVDD, VREFP and -2.5V AVSS, VREFN. When taking a reading of a +2.5V signal, the decimal counts value that I am getting is about 3.9million. Taking a reading of -2.5V I get a decimal counts value of -3.9 million. Both of these values are about half of the respective positive and negative VREF values specified in the datasheet (Expected value of 0x780000 for VREFP). This half-range bug appears regardless of sampling speed, so it almost feels like I am losing a bit somewhere.
I am in the process of reviewing my code to make sure that the data-capture is correct. Is there any hardware or register configuration that would contribute to this half-range reading?
Thank you,