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TMP117: Accuracy of Sensor with different configuration

Maarten Jansen
Prodigy 10 points
Part Number: TMP117

In the datasheet of the TMP117 (SNOSD82C – JUNE 2018 – REVISED APRIL 2021) it specifies in chapter 6.5 "Electrical characteristics" the temperature accuracy. Under test conditions it specifies that this is measured using 8 averages and an 1 Hz conversion cycle:

I was unable to find what happens to the accuracy if this configuration is changed (i.e. 8 averages 8Hz conversion cycle; assuming no standby time with this configuration, refering to chapter 7.3.2 "Averaging")

To summarize: What is the influence on the accuracy when not using the default configuration?

  • 0
    TI__Genius 10080 points

    Hi Maarten,

    Thank you for posting to the Sensing forum.

    Figures 6-6 and 6-7 in the datasheet show the data distribution and temperature distribution error when the device is configured for 8 averages as well as no averaging. The temperature result has a repeatability of approximately ±3 LSBs when there is no averaging, and ±1 LSB when configured for 8 averages.

    While the temperature accuracy listed in section 6.5 of the device datasheet is specified for 8 averages and a 1 Hz conversion cycle, the accuracy will be similar under other non-default settings.

    Best regards,

    Nicole