Residual phase noise of HMC575 and HMC573

The datasheets of the HMC575 and HMC573 frequency doublers only give residual phase noise at 100 kHz offset. Can you perhaps provide a graph over a wider offset frequency range?

Thanks.

Parents
  • 0
    •  Analog Employees 
    on Jul 22, 2020 6:36 PM

    Admittedly this should be easier to answer than it is.  I have not been able to find the original characterization data.  I was able to determine the number in the HMC575 datasheet was based on 4GHz input frequency.  From there you can mathematically determine some reasonable numbers using these formulas.

    100kHz PN = datasheet number + 10*log(fout/4GHz)

    For different phase offset you can use a 10*log(offset frequency) curve.

    What particular frequencies and offset are you interested in?  

Reply
  • 0
    •  Analog Employees 
    on Jul 22, 2020 6:36 PM

    Admittedly this should be easier to answer than it is.  I have not been able to find the original characterization data.  I was able to determine the number in the HMC575 datasheet was based on 4GHz input frequency.  From there you can mathematically determine some reasonable numbers using these formulas.

    100kHz PN = datasheet number + 10*log(fout/4GHz)

    For different phase offset you can use a 10*log(offset frequency) curve.

    What particular frequencies and offset are you interested in?  

Children