I have a customer that would like to know the pluses/minuses of using a Vref 2.5V versus the 4.096V reference for the AD7663. I saw that the datasheet has performance characteristics for the 4.096V Vref, but not for the 2.5V. Have you done evaluation with both? Can you share your results? Any opinion on advantages, disadvantages would be great. i.e. performance over temperature, stability over time etc.