Output frequency of DAC

Can anybody tell me how to decide the output frequency of the DAC.

I am going to use AD9873 DAC and want 70 MHz output signal from it, For this what should be my sampling rate, clock frequency etc.

If someone can share the calculation,it will be more helpful.

Mukund Jha

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  • I am sorry,

    IC is AD9753 DAC.

    I want to get 70 MHz analog output from this DAC. Please tell what should be sampling frequency, clock frequency to get this output.

    Below is some spec of AC linearity part on page 3

    fDATA = 65 MSPS; fOUT = 1.1 MHz  SFDR= 77 dBc

    fDATA = 65 MSPS; fOUT = 5.1 MHz   SFDR = 77 dBc

    fDATA = 65 MSPS; fOUT = 10.1 MHz SFDR= 76 dBc

    How this fout comes for same fDATA. Is fDATA clock frequency of DAC.

Reply
  • I am sorry,

    IC is AD9753 DAC.

    I want to get 70 MHz analog output from this DAC. Please tell what should be sampling frequency, clock frequency to get this output.

    Below is some spec of AC linearity part on page 3

    fDATA = 65 MSPS; fOUT = 1.1 MHz  SFDR= 77 dBc

    fDATA = 65 MSPS; fOUT = 5.1 MHz   SFDR = 77 dBc

    fDATA = 65 MSPS; fOUT = 10.1 MHz SFDR= 76 dBc

    How this fout comes for same fDATA. Is fDATA clock frequency of DAC.

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