I have a question related to the DAC "AD5761ARUZ" device (this is the full chip's reference).
In my case, the SPI communication with the DAC is not working unless I connect the DGND to AGND! I came through all the examples (that i could find) in EngineerZone besides the schematic of the evalution board, and all of them connect both GNDs together , is this necessary?
In my application, I would like to keep the both GNDs separated, so I have designed a board with special care for this issue. Please find here below the schematic of used DAC.