I am considering to use the ADUM5000 Isolated DC/DC Converter to reduce the noise level in my ADC circuit whiche uses an AD7794. When powering the circuit directly from USB I observe a significant higher noise level as compared to using a lab power supply.
Is the device suited to reduce the noise of the supply voltage in this kind of application ? I am a bit unsure how to interpret the noise figure in the ADUM5000 datasheet, which states an output noise of 200 mVpp. This seems rather high to me .
Thank you for any advice!