When calculating the GAIN FACTOR, it is essential that the receive stage is operating in its linear region. This requires careful selection of the excitation signal range, current-to-voltage gain resistor and PGA gain. The peak-to-peak voltage presented to the ADC input is 2 V p-p. However, had a PGA gain of ×5 been chosen, the voltage would saturate the ADC. The GAIN FACTOR must be recalculated for a change in any of the following parameters: current-to-voltage gain setting resistor, output excitation voltage, or PGA gain.

