Question about AD5725 reference voltage

Hi fishmars ,

Thank you for your query. We wanted to let you know that our response may be slightly delayed due to the observance of some holidays. We’ll review your request as soon as we return and get back to you promptly.

Br,

Den

Hi fishmars ,

In your configuration (AVdd = 5V, Vrefn = 0V), Vrefp is fixed at 2.5V due to the min/max formula. This setup has no margin for adjusting Vrefp, but that shouldn’t impact performance unless your application requires flexibility. The formula ensures stable DAC operation by providing necessary headroom for the internal circuits. Does your application need adjustable Vrefp?

Br,

Den

Hi Den,

My design does not need to adjust Vrefp. But as you know, there is certain error in both 5V power supply and 2.5V voltage reference. From the formula, there is no headroom, so I concerned about whether the error will cause the circuit unstable. Any more comments, thanks!

Hi Den,

My design does not need to adjust Vrefp. But as you know, there is certain error in both 5V power supply and 2.5V voltage reference. From the formula, there is no headroom, so I concerned about whether the error will cause the circuit unstable. Any more comments, thanks!