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AD7663

Hello,

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.

Thank you,

Anita

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  • Hi Lloben,  Thanks for the clarification. Can you advise on how to drive a differential signal into the AD7663, we need to make sure it has a Vocm of Vref/2. Typically op amp has two differential inputs and an output. ... This is the purpose of the VOCM pin, are we to assume that Vocm is not shown but is connected to Vref/2? Can you advise on how to do this?

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  • Hi Lloben,  Thanks for the clarification. Can you advise on how to drive a differential signal into the AD7663, we need to make sure it has a Vocm of Vref/2. Typically op amp has two differential inputs and an output. ... This is the purpose of the VOCM pin, are we to assume that Vocm is not shown but is connected to Vref/2? Can you advise on how to do this?

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