• AD9913 - Electromagnetic Susceptibility Test Failure


    I could find that AD9913 is failing one EMC susceptibility test: When applying 10V/m @ 250MHz, device stop working.

    Test has been run using a TEMCell. AD9913 is running on a custom PCB using a 25MHz quartz. Internal clock is running at 250MHz…

  • URGENT - AD9913 - quartz cristal characteristics

    • Hello

    AD9913 datasheet does not specify quartz cristal characteristics

    What are the absolute maximum for 25MHz cristal characteristics to be used together with 39pF capacitors

    - ppm ? 10 - 50 ppm ?

    - capacitance ? 4,8, 12, 16, 20 pF ?

    - ESR ? 50 …

  • RE: Programming DDS AD9913 &/or AD9852

    Hi Samuele, 

    If you intend to use 100 MHz or higher frequency for your REFERENCE CLOCK, you may. In fact, AD9913 should be able to work with a reference clock of up to 250 MHz and AD9852 can work up to 300 MHz. I was only referring to the rate at which…

  • AD9913

    What is the minimum reference clock frequency input for the AD9913, both with and without the PLL multiplier enabled?


  • ad9913

    Hi, on the AD9913, how much worse should the phase noise be when the PLL is engaged (2x multiplication) vs.

    when it is direct fed? In this specific case:

    Fref: 90 MHz  = sysclk


    Fref: 90MHz using PLL=2x, 180 MHz = sysclk

    For a FIXED output frequency…

  • AD9913 interfacing circuit

    Hi all, how to connect the AD9913 chips for interfacing? Have any schematic diagram of the complete AD9913 chips module for me to refer?


  • AD9913 profiles configuration


    I can see  in my design strange behavior linked to the profiles configuration on AD9913.The component configuration is:

    16MHz input multiplied by 15 = 240MHz, switching mode, serial configuration (SPI 200kbps)

    The issue is:

    I configure profiles…

  • Sync Multiple AD9913

    Hey all - I have two AD9913 running from the same clock. Need a defined phase shift between them. I assume I can do this by,

    1) Program the devices registers as required.

    2) Use IO_UPDATE to load both devices at the same time (IO_UPDATE is routed to…

  • AD9913 SYNC_CLK

    I have an AD9913 evaluation board and I'm trying to monitor the SYNC_CLK signal at the J2 connector.  There is no signal at this connector, just +1.8VDC.  I have also probed the SYNC_CLK pin at the AD9913 device and found the same result.  What should…

  • AD9913 DDS


    I'm searching for a DDS from Analog Devices and it seems like the AD9913 DDS meets our requirement.
    However, in the datasheet below, it does not specify what is the minimum clock input frequency for the RefClkIn. Do you know what is the spec…