Hi to all, I read the article on true continuous background calibration. My system is completely discrete made of amplifiers, antialiasing discrete-digital filters and ADC as a heart from analog to digital domain. It requires outstanding linearity including offset and gain since it is intended to be used in biomedical applications where useful signal goes from couple mV up to 100mV. Now since all these components have certain fabrication mismatch that will definitely require advanced calibration technique to achieve necessary performance. Cutoff frequency is about 50Hz (0-50Hz). Can you advice me how to perform calibration? Do I need some very precise signal source? Should it be only static (DC) or there will be a need for dynamic training signals (in terms of frequency) ? Should I use look up table mathematical approach (for linearity, gain and offset) in order to post correct sampled data from ADC? Can you help? Also I can't made any changes in hardware so everything needs to be done with digital calibration, LUTs or similar. I would need real help since I never did this before.
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