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PGA300: PGA300 calbration and accuracy

Shibuya
Intellectual 2985 points
Part Number: PGA300

Hello team,

I have a question for PGA300 calbration and accuracy.

My customer performed 3 points Pressure calibration at Ta = 23degC and confimed linearity. Then they perform additonal 3 points calibration at Ta = -10degC and 50DegC and checked linearity at Ta = 23degC. The result got worse.  Is it normal observation?

Best regards,

Tetsuro

  • 0
    TI__Mastermind 31655 points
    Hi Tetsuro-san,

    Can you please clarify their calibration procedure?

    Did they perform a 3 pressure 1 temperature (3P1T) calibration at 23C first? Then perform a separate, full 3P3T calibration at -10C, 23C, and 50C?

    If they did a full 3P3T calibration, the results at the calibration temperatures (like at 23C) should be fairly close to what they saw when doing a single temperature calibration.

    If the results are far off, I would consider checking the calibration procedure. When changing the temperature they should let the part soak at the temperature for a long time (30-40 minutes) to ensure that it is at a stable temperature when calibrating. Then when they go back to that temperature they also need to soak for 30-40 minutes to ensure that they are at the same temperature that they calibrated at. Any inaccuracy in the temperature will give different results.

    Regards,
  • 0 in reply to Scott Cummins
    TI__Intellectual 2985 points
    Hi Scott,

    Thank you for youe support.

    I am confirming the calibration procedure now.

    I have one more question.
    Can you provide source code of EVM GUI to the customer?

    They want to build a kind of gang programmer for product calibration on mass production, and want to refer the calibration of the GUI.

    Best regards,
    Tetsuro
  • 0 in reply to Scott Cummins
    TI__Intellectual 2985 points

    Hello Scott,

    The customer found issue on their evavluation system and corrected it. Then the calbration issue was solved.

    Please follow up only for GUI source code.

    Best regards,

    Tetsuro

  • 0 in reply to Shibuya
    TI__Mastermind 31655 points
    Hi Shibuya-san,

    We cannot provide the EVM GUI source code. It contains proprietary information about our compensation algorithm. Please email me directly for some additional information.

    Regards,