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Hey team,
My customer, Milan @ Eaton, is looking to use the AMC1100 and is wondering if there are any tolerances he may want to consider when calibrating at 25degC only. This is for his worst-case analysis and he is aware of the variation of specs when deviating from 25C. I've copied his exact wording on the question in case I am misunderstanding (English is not his first language).
"If I have a calibration before starting, and if my device is really just at 25C, could you tell me is there some tolerance in AMC1100 that I still should consider for the worst case analysis? I think that gain tolerance will be avoid since the calibration and all temperature effect will be avoid since T=25C, right? Is there something significant that I should consider in that case?"
Additionally, is there any SPICE model for the AMC1100/AMC1200/AMC1300 that has implemented thermal dependencies in it? This would also be for the customer's WCA.
Best,
Dajon McGill
Hi Dajon,
If performing gain and offset calibration, the only error tolerances left would be: offset drift, gain drift, nonlinearity drift.
This post may help: https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/937333/amc1302-q1-what-do-tceg-nonlinearity-and-tceg-nonlinearity-drift-mean/3463286#3463286
This excel calculator may help: https://www.ti.com/lit/zip/sbar020
Please note that AMC1100 is not included in the calculator as it has an older architecture than our newer device family, but the error calculation method remains the same.