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I am using A3G4250D gyroscope in one of our project. I want to know how to convert RAW value read from register OUT_TEMP (26h) to actual temperature values?

DS
Associate

I know that OUT_TEMP register in two’s complement format with a sensitivity of -1 LSB/°C but not able to convert to exact temperature value.

please provide the calculation to convert from RAW values to temperature value.

Thanks in Advance...!!!

1 REPLY 1
Eleon BORLINI
ST Employee

HI @DS​ , please consider this caption of the AN5148 for the A3G4250D at p.43:

The A3G4250D is provided with an internal temperature sensor that is suitable for delta temperature measurement.

So it's intended to be a Delta temperature sensor... You should have a reference sensor close to the device and measure OUT_TEMP (26h) to get the right offset for the temp calculation.

However, if your application is not strictly automotive non-safety and you need accuracy in temperature, I suggest you to switch to a 6-axis module with embedded T sensor such as LSM6DSO (00h output calibrated at 25°C, on 16bit).

Regards