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Please explain the "AD9122 PCORE" (inside the FPGA) of "AD-FMCOMMS1-EBZ"?

Question asked by hofer on Aug 20, 2012
Latest reply on Mar 8, 2013 by rejeesh

Hello,

 

Please explain the "AD9122 PCORE" (inside the FPGA) of "AD-FMCOMMS1-EBZ"?

What are the purposes of: DDS-1a, DDS-1b, DDS-2a, and DDS-2b?

I had a look on the Datasheet of AD9122, I found the interpolation is done inside it by three half-band filters also the modulation to IF frequency up to 175 MHz, The input Data (D15P/D15N … D0P/D0N) are LVD pairs which come out from FPGA pins, when the baseband signal are coded into I/Q?

 

Thank you,

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