JAJSGG2C October 2018 – June 2019 ADS125H02
In this multiplexer configuration, the external inputs are disconnected and the PGA inputs are shorted to an internal voltage given by: VCOM = (HV_AVDD + HV_AVSS) / 2. Use this mode to measure the ADC noise performance and offset voltage, or to short the inputs to perform offset calibration. Be aware that shorting the external inputs during calibration yields the best results. Write 101b to the MUX[2:0] control register and start a new conversion to obtain the internal shorted-input reading.