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Original question:

PGA300: Calculable criteria of temperature compensation coefficients

PGA300: Calculable criteria of temperature compensation coefficients (2)

user5359235
Intellectual 395 points
Part Number: PGA300

Hello,

Because a thread in which I want to reply is locked, I create a new thread. The loked thread is followin URL and following content is all about locked thread.

URL: e2e.ti.com/.../3278458

By May 25, could you give me the answer and the judgement value which is the criterion cause this error? In addition, when I tried temperature compensations in 4P-4T, I got same errors it likes 4P-3T errors. Do these errors come from same reasons of the compensation calculation fails in 4P-4T? Please look over an attachment file which is about 4P-4T errors.

Temperature compensation error with PGA300 4P-4T.xlsx

Best regards,

  • 0
    TI__Mastermind 31655 points

    Hello,

    As I mentioned before, the main problem seems to be in the range of the temperature readings. If the range of the temperature readings can be expanded, then the success of the calibration becomes more likely.

    One thing that may be affecting the 4P4T calibration is that for the 4th temperature in the DAC settings, the desired  voltage is not set the same as it is for the rest of the temperature values. 

    Regards,

  • 0 in reply to Scott Cummins
    Intellectual 395 points

    Hello,

    A represent of this problem sent me wrong DAC screen that 4th temperature is not desirable. I'll send you another later when I got it from the represent.

    Could you show me the AD value for judgement clearly by June 3? I don't know the allowance of difference between each temperature in 4P-3T, yet. Because of this, I can't take adequate measures for this problems. I hope you tell me the AD value for judgements that use for success or error. The AD value for judgement should be used in GUI, and please clear that by June 3.

    Regards,