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  • TI Thinks Resolved

LMT87-Q1 Temperature Accuracy

Genius 11605 points

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?

  • 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
  • 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..

  • 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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