ISOW7841: using with ADS131A04 to isolate SPI lines from noise wireless module

Part Number: ISOW7841

Hello Team ,

We need to keep noise low at the ADC (ADS131A04)  end so thinking of isolating the digital lines (SPI) connecting from ADC to Wireless module. For power, we use only LDOs to avoid switching noise.

The part ISOW7841 has built in DC-DC and we are worried of switching noise. Wondering if we can use this device for digital isolation in our design. Can we leave its secondary power (near ADC) unconnected ?.

The analog inputs to ADC are at 65uV. Please suggest on digital isolation requirements ?



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