Is there any spec on how accurate the sample rate of the LIS3DSH accelerometer is? In our application we configure the module to sample at 1600 Hz and apply to it vibration of a known frequency. However, after performing some frequency analysis on the accelerometer output samples, the measured frequency seems to be a few Hz out from what was expected. As an example the measured frequency content would correspond to a sampling frequency of 1660 Hz, rather than 1600. However, that drift is variable from one device to the other. Is that variability something that is expected?