We are using the AD7124-8 with ± 1.8V power. On pin 24 I find a voltage of 0.105 V and as I see it must be 1.8 V aproximately. I have changed the decoupling capacitor and the voltage does not change. What could be the problem? The readings on the SPI are erratic, changing from positive to negative full scale. IOVDD is +3.3 V. At pin 22 there is 0.700V. Vontage at pin 1 is 1.8 V .