About ADF4371 sweep frequency mode

Dear all,

  How to realize the sweep frequency mode of ADF4371? Hope to get your help. Thank you.

Parents
  • +1
    •  Analog Employees 
    on Jul 12, 2021 7:14 AM

    Hi,

    Unfortunately, ADF4371 does not have a built-in frequency sweep functionality. What you can do is to calculate feedback divider values (INT, FRAC1,FRAC2,MOD2) for a given PFD frequency and write to part for each desired frequency. You can enable SPI stream mode so that you don't have to pull-up and pull-down your CSB line for each register write and make a sequential writing. By doing so, you can decrease the SPI write time

    Kudret 

Reply
  • +1
    •  Analog Employees 
    on Jul 12, 2021 7:14 AM

    Hi,

    Unfortunately, ADF4371 does not have a built-in frequency sweep functionality. What you can do is to calculate feedback divider values (INT, FRAC1,FRAC2,MOD2) for a given PFD frequency and write to part for each desired frequency. You can enable SPI stream mode so that you don't have to pull-up and pull-down your CSB line for each register write and make a sequential writing. By doing so, you can decrease the SPI write time

    Kudret 

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