LIS2DH temperature correction

[BBQ]

How can I correct the temperature? Is there a correction table?

[Eleon BORLINI]

Hi @BBQ​ ,

Ambient temperature is compensated at production level, and values are stored in reserved registers.

You can however use the suggested compensation that you can find in the datasheet, p.10 and 11, under the name "Sensitivity change vs temperature", which is 0.01 %/°C typ.

If you have an external reference at 25°, you can also compensate the Zero-g level change vs temperature offset, which in any case should be typ ±0.5mg/°C.

-Eleon

[BBQ]

 I would like to compensate the Zero-g level by temperature changes. The offset value is +-0.5mg/℃, but does it change to plus or minus? Can you provide offset value list?

[Eleon BORLINI]

Hi @BBQ​ ,

the offset depends on the specific device, and it is +-0.5g at ... you should check the internal embedded temperature sensor and compare it with a reference sensor, and evaluate from it the sign of the offset. Is it feasible for you?

-Eleon

[BBQ]

You mean should we have to measure the Zero-g level offset value for each device one by one?

[Eleon BORLINI]

Hi @BBQ​ ,

if you want to be accurate for your application, a preliminary offset characterization and its compensation is well suggested.

-Eleon

[BBQ]

​Thank you for the reply.

However, You don't know if the offset value for each devices will be plus or minus, right? If so, we can not correct the value. Am i right?

[Eleon BORLINI]

Hi @BBQ​ ,

I can share you a representative behavior of the offset and sensitivity vs temperature for the LIS2DH:

• Offset vs temperature

• Sensitivity vs temperature

You can see that, if the sensitivity has a quite clear descending trend vs temperature, the offset is a bit more scattered.

If my reply answered your question, please click on Select as Best at the bottom of this post. This will help other users with the same issue to find the answer faster.

-Eleon