[quote user="abe mathew"]1. What is the tolerance on the correction value and what is an acceptable range? I need to set a warning if the average is outside a threshold +/- tolerance. [/quote] We have no official threshold or tolerance to recommend. Personally, I would expect the self-offset trim on your system to correlate with the offset trim that is populated by Device_cal so you could use a handful of devices to determine a rough threshold. However, TI may occasionally change the manufacturing offset trim algorithm so it would be a good idea to use a loose tolerance. For example, +/- 20 LSB. If you have a well-regulated reference voltage of some sort on the board and a free ADC channel, it would probably be more reliable to sample the reference voltage for sanity check. [quote user="abe mathew"]2. Is there a way to induce a fault for software verification tests by affecting the correction value to push outside its acceptable range?[/quote] Can you provide an example? Would it be sufficient to add a value to the OFFTRIM register so that the conversions are wrong?
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