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DFT output to voltage

Hi, I am evaluating the DFT code of AD5940 from the GITHUB example, the DFT value for an external 825mV signal is shown as: 39484 , - 62331. 

I understand that these values ​​correspond to the real and imaginary part, however I would like to know how to represent this in voltage in a theoretical way, I have carried out several tests and it finds a factor of 1/72, but I would like to know its transfer function to voltage.

[edited by: Cristian_ch at 9:20 AM (GMT -4) on 25 Apr 2022]