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Output of the FDUC when sending real signal

Category: Datasheet/Specs

Hi,  I am working on AD9081. According to the UG-1578 user manual, the FDUC’s accept input from 2 virtual converters, assuming it is complex I and Q, then the output is complex with 2 samples one I and one Q sample, what happens if I send in a real signal? What would be the output of the FDUC? Would it be just 1 sample of a real signal ?