hmc439 loop filter design

I am interested in using the HMC439 Phase-Frequency Detector (PFD) for a PLL application. Our application needs different VCO and narrower loop filter than the one shown in the datasheet (page-7, application circuit). I am not able to find a PLL design tool that will help me plug-in PFD gain/ offset, VCO parameters or loop-bandwidth requirements to calculate RC component values for the loop filter. I downloaded one PLL design tool from Hittite but it does not have a HMC439 PFD model.

I would appreciate any help in designing custom PFD + Loop filter using HMC439 + THS4031 with any off-the-shelf VCO modules.

Thanks,

AB

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    •  Analog Employees 
    on Feb 27, 2015 9:18 PM

    Hi AB,

    I've put together a brief application note illustrating how to setup and use the legacy HMC PLL Design tool to design a loop filter for the legacy Hittite (now Analog Devices) HMC439QS16G, HMC3716LP4E Phase Frequency Detectors or HMC440QS16GE, HMC4069LP4E, HMC698LP4E and HMC699LP4E Integer-N synthesizers with a PFD output (as opposed to a charge pump output). Hope this helps.

     

     

    Marty

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  • 0
    •  Analog Employees 
    on Feb 27, 2015 9:18 PM

    Hi AB,

    I've put together a brief application note illustrating how to setup and use the legacy HMC PLL Design tool to design a loop filter for the legacy Hittite (now Analog Devices) HMC439QS16G, HMC3716LP4E Phase Frequency Detectors or HMC440QS16GE, HMC4069LP4E, HMC698LP4E and HMC699LP4E Integer-N synthesizers with a PFD output (as opposed to a charge pump output). Hope this helps.

     

     

    Marty

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