AD9913 - Electromagnetic Susceptibility Test Failure

Hello

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.

Do you confirm ?

Do you have any hint to avoid this problem ?

Thank you in advance

Best Regards

STH

Parents Reply
  • +1
    •  Analog Employees 
    on May 17, 2021 12:55 AM in reply to STH

    Hi,

    The device is not inherently designed to operate under EMC impairment. The introduced impairment of 10V/m @ 250MHz is at the same frequency as the system clock. This is likely imposing excessive jitter on the system clock resulting in internal setup/hold violations within the clock tree. If the intent is to operate in an impaired environment, the device should be shielded against those impairments.

    Best regards,

    Mark

Children
No Data