I am grateful that you are paying attention to this problem.My customers are trying to decide to connect an external reference using resistance.I think that my customers are requesting something evidence to design.Best regards
I am still looking for resources to answer your request. I'll give a reply here once they are available. May I know what are your concerns? Can the customer introduce a delay to the external reference as I have suggested before? Thanks.
I was shown in the following thread that the input impedance varies depending on the selected gain.In the data sheet, the structure of resistance strings is posted next to the figure you show.I would like to see a mechanism by which the input impedance changes, depending on the gain chosen.Sorry to trouble you.I thank you in advance.Best regards
AD5317R and external reference
I was hoping for a buffer between the Resistor String and the reference terminal.I assume that the Resistor String and reference terminal are as direct as you say.At that time, when connecting a resistor in series with the reference terminal, a current flows from the reference terminal to the Resistor String, so that resistance seems to influence the accuracy.Is not there another buffer somewhere?