I have a question about the measurement for MUX_SEL = 0b11010, where TEMP_SENS_N is measured against TEMP_SENS_N (i.e. to measure an offset of the measurement channel). How is this different than the measurement for MUX_SEL = 0b11000, which measures VBIAS against VBIAS?
I noticed that in the 4-wire BioImpedance example's calibration of the current measurement, it does *both* of these measurements (don't they give the same answer)?
Even weirder, the 4-wire BioImpedance example uses the result of the TEMP_SENS_N to TEMP_SENSE_N measurement to set the value in the ADC_OFFSET_TIA calibration register. What would the measurement of TEMP_SENS_N to TEMP_SENSE_N have to do with the offset of the TIA? I'm attaching some notes to make my question clearer.