• FAQ: HMC PLL with Integrated VCO AutoCal with High N Counter/Low PFD Frequency


    With an HMC PLL with integrated VCO (e.g. HMC1033) when using a high N counter value, say N > 4000 (such as when the PFD frequency is low), the PLL does not always function with VCO auto calibration (autocal). How do I get the PLL  to lock…

  • How do I use the SPI Mode Selection feature on HMC PLL's & PLLVCO's?

    This note discusses best practices for use of the Serial Port Interface (SPI) Mode selection feature of HMC PLL and PLLVCO product lines.

  • RE: HMC832 PLL

    Both HMC830 and HMC832 will meet these requirements but the application must utilize a tunable reference and manual tuning to meet the -60dBc spurious and hop time requirements.  I've attached an appnote on manual tuning.  With a fixed 50MHz reference Figure…

  • HMC830 Frequency Hopping - Direct LUT ?


    I'm working with the PLL VCO HMC830.

    I want to use a look-up table (LUT) for manual calibration, as decribe in "Frequency Hopping with Hittite PLLVCOs Application Note" (attached) (https : // www . hittite.com/content/documents/application_notes…

  • RE: 36GHz RF oscillation signal source

    You need a PLL which drives a frequency doubler which drives an amplifier. Possible choices might be ADF4371 (PLL),  HMC1105 (frequency doubler) and HMC7229 (amplifier). These are not the only choices.


  • RE: Query

    This part is EAR99. The attached RFIC selection guide lists the ECCN codes for all of ADI's RF products.