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NRF52810 Operating Temperature

user116789

Dear customer support,

the datasheet of the NRF52810 states that its operating temperature is: -40...+85°C

Could you please clarify the following points?

- How is the "Operating Temperature" defined (ambient, case, PCB, junction temperature)?

- How can I verify if if the micro controller is operating within its recommended conditions? Is the internal micro controller's temperature sensor a reliable method (or should I perform a different temperature measurement)?

- What is the maximum Die operating temperature (the one detected by the internal temperature sensor)?

- What are the risks involved in operating the micro controller above its maximum operating temperature (component damage, reduced lifespan, an undefined operating state, ...)?

Unfortunately, our application requires high temperature operation and I would like to make sure that the micro controller remains within its recommended operating conditions. 

Many thanks and kind regards,

Nele

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  • 0

    Hi Nele

    1. The operating temperature is the ambient temperature in which the nRF52810 is tested to work as intended. So it is tested to work in environments that are from -40 to +85°C. 

    2. The best way to test it would be to have a cold/heat chamber where you can set the temperature yourself to test the SoC in the minimum and maximum.

    3. The max would be +85°C. If it gets any higher than this we can't guarantee the nRF52810 operates as intended, as it has only been tested/characterized up to 85 degrees.

    4. The risks include the component being damage, the SoC operating in an undefined state, reduced lifespan, increased current consumption, lower clock accuracy resulting in worse radio performance.

    Best regards,

    Simon

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  • 0

    Hi Nele

    1. The operating temperature is the ambient temperature in which the nRF52810 is tested to work as intended. So it is tested to work in environments that are from -40 to +85°C. 

    2. The best way to test it would be to have a cold/heat chamber where you can set the temperature yourself to test the SoC in the minimum and maximum.

    3. The max would be +85°C. If it gets any higher than this we can't guarantee the nRF52810 operates as intended, as it has only been tested/characterized up to 85 degrees.

    4. The risks include the component being damage, the SoC operating in an undefined state, reduced lifespan, increased current consumption, lower clock accuracy resulting in worse radio performance.

    Best regards,

    Simon

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  • 0 in reply to user75734

    Hi Simon, 

    Thanks a lot for your answer.

    We performed some tests in the environmental chamber with an ambient temperature set to 70°C. In this condition, the die temperature detected from the internal nRF52810 temperature sensor was approx. 80°C.

    After this test I can more precisely ask you the following question:

    Can I reliably operate the nRF52810 at an ambient temperature of 85°C (that will cause its die temperature to rise to approx. 95°C)?

     

    Thanks a lot and kind regards,

    Nele

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