nRF52840 Internal temperature sensor accuracy

RE: nRF52840 Internal temperature sensor accuracy

Simonr — Mon, 18 Jan 2021 13:52:18 GMT

In both instances, 50°C and 0°C, the temperature sensor accuracy will be -5°C to +5°C.

Best regards,

Simon

RE: nRF52840 Internal temperature sensor accuracy

GT — Mon, 18 Jan 2021 11:44:38 GMT

Hi Simonr,

Thank you.

I have one more question, do you know how the accuracy pattern is at extreme temperatures?

Like in, for example at absolute temperature of 50°C, is the accuracy of the system
0°C to 5°C
or
-5°C to +5°C
or
-5°C to 0°C ?

Same applies to 0°C absolute temperature.

RE: nRF52840 Internal temperature sensor accuracy

Simonr — Fri, 08 Jan 2021 09:48:08 GMT

We don't have the exact accuracy at every possible temperature, but the accuracy at 5°C and 40°C should be within +/- 5°C.

Best regards,

Simon

RE: nRF52840 Internal temperature sensor accuracy

GT — Fri, 08 Jan 2021 08:08:31 GMT

Thanks Simonr. What is the accuracy at 5°C and 40°C?

RE: nRF52840 Internal temperature sensor accuracy

Simonr — Fri, 08 Jan 2021 08:01:06 GMT

The offset at room temperature (25 °C) is +/- 2.5°C, while the overall accuracy across all temperatures is +/- 5°C, where the offset will be higher at extreme temperatures, and lower in the middle.

Best regards,

Simon