Part Number: ADS1246 Hello, For conception choices, we use 6 * ADS1246 in our system in parallel. From time to time, with no corelation on a particular system over arround 500 units, it seems than after running fine for few days in a row, an offset of 5 to 10 mV appears. This offset vanish only with a full restart of the system. (power cycle on/off/on + init of the ADCs registers) The sensor in front af the ADC has a 200/300 ohm output impedance and is measured trough a diff AINP(~1.5V) - AINN(=1.5V). We though about other error possibilities, and one of our concern is about a current bias from the ADC excitation current sources to the sensor. First question : Is there a difference with the die inside an ADS1246 package regarding the die inside ADS1247 /48? Second question : If not, is there a possibility that a register IDAC1 badly initiated (normaly not present in ADS1246 ) can result in a current leakage inside our sensor ? Thanks for your time and help.
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