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LIS2DH12 - the frequency tolerance of data rate (ODR)?

Question asked by Morrigan Aensland on Jun 8, 2017
Latest reply on Jun 12, 2017 by Miroslav B



I set the data rate (ODR) to 400Hz in high resolution mode with fifo stream mode enable of LIS2SH12.

For 3 minutes measurement test, I excepted to receive 72000 (400 * 60 * 3) data for each axis, however I only received around 68220 number of data, which the data rate is around 379Hz (~5% tolerance).


I also tested with two other LIS2DH12 samples, one is 378Hz, and the other one is 399Hz.

Therefore I suppose the data rate has tolerance with it.


Myy question are:

1 Since the data sheet only provide the "typical" value, any application note describe the tolerance of data rate?

2 Is it possible to calibrate the data rate with register setting?


Thank you very much.