• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 31 subscribers
  • Views 444 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMP006 calibration drift over time

Adrian Stacey
Prodigy 10 points
Other Parts Discussed in Thread: TMP006

Is there any data on the drift of a calibrated TMP006 sensor? For example, if a TMP006 is calibrated (i.e. S0 calculated as per the user manual, and potentially other parameters of the physical model such that the accuracy is <0.5 degrees) on January 1st, would one expect the calibration to continue to hold with similar accuracy e.g. 1 month or 1 year later (assuming it is being used in an identical environment at that time)?

Is the drift affected by the temperature at which the TMP006 is held (e.g. at 35 degrees) or if the temperature is cycled (e.g. between 20 and 35 degrees)? Are there any engineering principles that need to be adhered to beyond those given in the user manual that should be pursued in order to minimise any drift?

Thanks,

Adrian

  • 0
    TI__Expert 7945 points

    Hello Adrian,

    Thanks for posting your TMP006 questions on E2E. Regarding your first question on drift: Yes, if your system setup remains the same you should see the same results after a moth or a year. And yes we do have characterization and life test data that is meant to check for long term drift and device failures. As long your set up remains within the datasheet temperature limits you should not get any drift over time for a particular setup with its set of coefficients.

    To further clarify your second question: No, there will be no drift over a temperature sweep with respect to time. Once you have a working setup that has been calibrated to the systems real case scenarios temperature limits and once you obtain a particular accuracy over a temperature range - It will not drift over time, this of-course remains as long as you stay withing the data sheet temperature limits (-40 to 125deg C).

    I hope this clarifies your concerns and whats your target application?  just so I can be of more help to you.

    Best Regards,

    Abhi Muppiri

    Applications Engineer

    MHR- Sensing Products

    Texas Instruments

    ------------------------------------------------------------------------------------------------------------------------------------------------

    Search for answers, Ask a question, click  Verify  when complete, In the process, Help others, Learn more...