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How do I convert ADC samples from hex values to temperature values (QN908x)? info not provided in data sheet!

Question asked by Sam Evans on Jan 31, 2018
Latest reply on Feb 21, 2018 by Xing Chang

Using a QN9080-DK for a project, I have configured the system to use the built-in temperature sensor (Channel 13 of ADC), when I receive sampled data at an instance, the data is shown in a hex value format.

 

Is there a scaling technique/formula I can use to obtain actual temperature values? This is not provided in the data sheet!

 

Also, does this temp sensor detect ambient temperature? or temperature of ADC input to an allocated channel?

The former would be very odd as temp of the IC would surely be affected by operating temps?!

Does the sensor use peripheral circuitry on the QN908x module of the DK?

 

Any insight would be greatly appreciated.

 

Thanks in advance

 

Sam

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