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AD6649 and complex output

Category: Hardware
Product Number: AD6649
Software Version: na

Can someone confirm that the AD6649 can NOT be setup to output complex/ IQ data and it will only output real data? 

The documentation seems to say that the Fs/4 NCO has to be on all the time and it shifts the DC centered data back to Fs/4.

but other parts make it sound like that Fs/4 NCO can be turned off. 

So i am looking for confirmation that this part is not capable of outputting data shifted to DC. i.e. Real output only.