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AD9361 VDD_GPO Operating Range


I'm trying to figure out what the operating range is for the AD9631 VDD_GPO supply. A question has been asked previously in 2014 (link below) and the response seemed to confirm operation at 1.8V.

However, Table 13 in the datasheet states: "2.5 V to 3.3 V Supply for the AUXDAC and General-Purpose Output Pins. When the VDD_GPO supply is not used, this supply must be set to 1.3 V."

So I'm not sure if the supply can be operated below 2.5V. Can someone confirm the VDD_GPO operating range?

Also, if the range is different at all for the space product version (AD9361S-CSL), please let me know.

Thank you