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AD7124-4: Signals not refering to GND

Question asked by Engi on Jun 10, 2017
Latest reply on Jun 29, 2017 by JellenieR


I'm feeding a differential signal into the AD7124-4 where both signals have no reference to the ADC's ground. The ADC is supplied by battery, the signal is generated externally. Do I have to make sure that the signal has a common mode voltage, eg VDD/2, referring to the ADC ground? Or does the ADC support a differential signal like this without further circuitry?