What should we consider as sampling frequency to perform vibration analysis using ISM330DLC?

[BC U]

Hi, we are using ST ISM330DLC for measuring vibration. Our main aim is to capture accelerometer data and perform frequency analysis by computing FFT (1K and 2K points). However, we are not able to identify the sampling frequency. What should we consider as sampling frequency? ODR or anything else? If it is ODR, then the maximum ODR is 6660, this means I can measure vibrations in the frequency range from 0Hz to 3.3KHz? Is this correct. Looking forward for your support. Thanks

[Eleon BORLINI]

​Hi, yes, the maximum bandwidth is equal to ODR/2 (if no filter is applied).

You can fin the description at p. 13/14 of the AN5125

https://www.st.com/content/ccc/resource/technical/document/application_note/group0/68/eb/a3/cd/2c/78/45/41/DM00468454/files/DM00468454.pdf/jcr:content/translations/en.DM00468454.pdf