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CC3220: Calibration Current

Mark Ackerson
Genius 10190 points

Part Number: CC3220

What are the implications of doing a one-time calibration on CC3220 that operates over a -40 to 85C industrial temperature range?

Would radio performance be degraded?

Any concerns with violating certifications?

Please advise.

Thanks,
Mark

  • 0
    TI__Mastermind 45206 points
    Hi Mark,

    One-time calibration mode performs the calibration one time during the initialization and sticks to it, re-calibration will not occur.

    So if the init calibration occurs at 30C it will be calibrated for 30C operating conditions. Radio performance would degrade at other temperatures, especially the extremities, and it would most likely violate certs.

    One-time calibration mode is not recommended for use within a temperature changing environment, users should use normal mode.

    From section 3.8 "Calibrations" of SWRU455:

    "Normal calibration mode is used to achieve the best RF performance, or when the environment of the device is prone to changes (temperature changes)."

    Hope this helps,
    Kevin
  • 0 in reply to Kevin Allen18
    TI__Genius 10190 points
    Hi Kevin,

    The apps team committed to getting output power vs temperature data for one-time calibration.

    Thanks,
    Mark