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Topic: Problem related to FMC150 DAC  (Read 5248 times)

lxx8811 March 14, 2013, 10:01 AM

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      Hello,                 
          In my design,I want to use FMC150 DAC to output 70M center frequency signal,and the 25.6 M input signal is from FPGA.
          Is it possible to achieve the DUC(digital up converter) function ?           
          If yes then what should I do ?             
         Thanks!
  • « Last Edit: March 14, 2013, 11:16 AM by lxx8811 »
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arnaudNL April 02, 2013, 10:55 AM (#1)

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Dear Sir,
I see two way of doing that:
1) The course mixer in the DAC chip but there is a limitation (Fs/2 and Fs/4). Check the manufacturer datasheet about that. You might need to change the sampling frequency and this would mean a custom VCXO component on the FMC150 or an external clock.
2) Implement the DUC in the FPGA. You might be able to find already made cores on the internet.
Best Regards,
Arnaud
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