• ADF4155 RF input levels required?

    Working on an ADF4155 design (up to 7.5GHz, thus 8/9 prescaler, RF output disabled) and we don't have much margin in terms of VCO output levels.

    The Rev.0 datasheet mentions

    RF Input levels:

    500MHz - 6GHz −10 dBm minimum/0 dBm maximum

  • ADF4155 evaluation board control software

    The latest ADF4155 evaluation board control software is attached.

    Installation process:

    1. Disconnect any evaluation board.
    2. Uninstall previous version of ADF4155 software.
    3. Download and run the attached installer.
    4. Click Next/Continue/Finish when asked.
  • About setting of N counter of ADF4155

    It is a question about ADF4155.
    Perhaps this might be a stupid question for you, I apologize in advance.

    I read the datasheet.(Data Sheet ADF4155 Rev. 0)

    http://www.analog.com/media/en/technical-documentation/data-sheets/ADF4155.pdf
    I caught on the explanation…

  • ADF4159 and ADF4155 Cycle Slip Reduction Differences

    Hi,

    ADF4159 contains following sentence in the datasheet (page #17): "The cycle slip reduction feature can be used only when the phase detector polarity setting is positive (Bit DB6 = 1 in Register R3). CSR cannot be used if the phase detector polarity…

  • Phase synchronization of several fractional PLL (ADF5610 & ADF4155)

    Hello,

    We are working on a multi-channel receiver projet. Due to the routing complexitiy, two options are currently possible :

    - each receiver has its own OL generation embedded (two OL based on ADF5610 and ADF4155+HMC390, boths PLL in fractional mode…

  • ADF4155: LDC - INT, FRAC, MOD, and R Counter Relationship

    What is the meaning of channel spacing frequency? Can you explain it in detail? How do I know the channel spacing of my designed system?

    Regards,

    Wallace

  • ADF4155: LDC - INT, FRAC, MOD, and R Counter Relationship

    What is the meaning of  channel spacing frequency.Can you explain it in detail? How do I know the channel spacing of my designed system?

    Regards,

    Wallace

  • ADF4155: Drops out of lock when temperature falls below -5 deg C

    Hello,

    I have a design using the ADF4155 that works very well at room temperature, but when I cycle temperature below freezing, lock is lost.  Probing with freeze-spray indicates when the chip is cooled (or the RF input line), lock is lost.  It returns…

  • Leakage Current in ADIsimPLL

    ADI PLL team,

    What should I put for Phase Detector Leakage setting in ADIsimPLL? I am using ADF4155. According to ADF4351 leakage current, the leakage current of ADI PLL ICs are around ±1 nA. Is this true for ADF4155?

    What happens if there is an OPAMP…

  • RE: Spurious noise on ADF4159 PLL

    Thanks rbrennan for your explanation,

    I think to change for ADF5355 for its higher frequency than ADF4155.

    But, has it the same architecture like ADF4155 (without wandering spurs) ?