AD7734 DVDD sourcing current into design?

Discussion created by Bareil on Aug 17, 2016
Latest reply on Aug 18, 2016 by Bareil



I have an AD7734BRUZ with AVDD connected to 5V. Then I have DVDD connected to 3.3V rail.


However, it seems that the DVDD ouput increase my 3.3V rail voltage. My voltage gets from 3.3V to 4V when I connect the board with the ADC.


What is happening? How can I solve this?