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ADL5906 RF Detector Output Long Term Drift

Hi,
I have a test equipment design used ADL5906 RF detector to detect target DUT RF transmitter power level.
The part AD5906 will do manual calibration to make sure we have precise RF power measurement result.
The question I like to ask is what is the part ADL5906 output voltage long term drift effect.
I saw in EngineerZone FAQ section we have below document:
https://ez.analog.com/rf/w/documents/9679/faq-long-term-drift-of-rf-detectors 
Could you help advise if above information also fit for part ADL5906?
What is the estimate long term drift effect like10 years for part ADL5906?

Dell (Bing chi) Shih
Test Staff Engineer
Skyworks Solutions, Inc.

  • Hello Dell Shih,

    Yes, the FAQ you reference should be roughly applicable to ADL5906. 

    We have no way to accurately predict the actual 10-year drift. For lowest long term drift performance, it may be necessary to pre-condition the devices. This can be achieved by temperature cycling the devices prior to PCB assembly, or by a burn-in process. 

    Hope this helps answer your questions.    -Bruce H. 

  • Hi Bruce,
    Thank you for the help on this. 
    The reason I asking this question is because we use the calibration process to guarantee the ADL5906 RF detector can get precise RF power measurement result. We like to know how long we need to redo the calibration and the device long term drift behavior is the key to decide the when we need redo the calibration for ADL5906. Could you share the ADL5906 reliability data for us to know how the device output voltage drift over time?

    Dell (Bing chi) Shih
    Test Staff Engineer
    Skyworks Solutions, Inc.

    cycling
  • Hello DellShih,

    I've looked for long term drift data for this device but found no specific information on this particular detector design.

    It seems reasonable to assume most drift should occur in the very early life of the design as a whole, which includes not just the detector IC, but also the PCB it attaches to, which likely also has printed transmission lines which also might age, depending on moisture content and the PCB fab process. Also, the components on the board that affect input matching may be drifting with time and thus affecting measurement accuracy due to a changing mismatch condition. Sorry we can't give more precise guidance here.  -Bruce H. 

  • Hi Bruce,
    Thank you for the help on this. 

    Sincerely.
    Dell Shih