JAJSGG2C October 2018 – June 2019 ADS125H02
The full-scale calibration command corrects gain errors. To calibrate, apply a positive calibration voltage to the ADC, or apply the voltage to the signal inputs of the system, wait for the signal to settle, and then send the command. The ADC averages 16 conversion results to reduce conversion noise to improve calibration accuracy. The ADC computes the full-scale calibration value so that the applied calibration voltage is scaled to an equal positive full-scale output code. The computed result is written to the calibration register. The ADC then performs one new conversion using the new calibration value.