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LMT87-Q1 Temperature Accuracy

Genius 11605 points
Naser S.

Replies: 3

Views: 272

Hi Team, 

Customer is currently using this LMT87-Q1 temperature sensor for one of our applications. He was curious about the worst-case temperature accuracy for this component.

Table 7.5 in the datasheet lists a worst-case variance of  -2.7 degrees C. This is quite a large tolerance compared to the typical reading ( -0.3 to 0.6 degrees C). I'd like to know the general distribution here if possible - is it a normal distribution, and what percentage lies within the typical range? Does this worst-case variance rely on specific conditions such that the variance would be better under different conditions?

Genius 11605 points
Naser S.
  • Expert 5875 points
    Kelvin Le THS
    Naser,

    These min/max limits are what we are guaranteeing for this device. I believe during statistical analysis, we assumed a normal distribution and use 6 sigmas to derive these limits. The test conditions are stated in the table and those are the limits that we are able to guarantee.

    If the customer wants higher accuracy, they might want to check out our digital devices like TMP112-q1.

    -Kelvin
  • Genius 11605 points
    Naser S.

    In reply to Kelvin Le THS:

    Hi Kelvin:  . I just wanted to be clear on one thing: Is the 6-sigma range between the typical values (e.g. -0.6 ~ 0.6) or between the -2.7 ~ 2.7 region? I assume the former, but I wanted to clarify. Thanks..

  • Expert 5875 points
    Kelvin Le THS

    In reply to Naser S.:

    Naser,

    The 6-sigma is for determining the min and max of the 2.7C spec.

    -Kelvin

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