Dear Support Team,
We are using 2 DAC8568ICPW in our design.
One of them supplies the VREF to the other one and also to the ADC used in our system.
We noticed that sometimes one of the DACs output is only half of the output we set it to be.
If the DAC affected by this is the one that supplies the reference to the other circuitry we also see that our ADC measurements gets shifted because the VREF is not 2.5V anymore.
After a powercycle everything goes back to normal.
Unfortunately the boards are built into a system and we are not able to measure anything, we can only assume these things happen from our internal measurements.
We already have filtering on the AVDD and the VREF lines with ferrite beads.
AVVD is 5V.
Do you think this issue can be caused anything else than noise like how it happens in this blogpost:
Best Regards,
Pál