LIS3DH Anti-aliasing

Posted on June 20, 2016 at 12:44

Does anyone have any characteristics for the AA filter and method on the LIS3DH accelerometer?

E.g. slope, number of poles, type...

Thanks

Kevin

#lis3dh

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Visitor II

Posted on May 11, 2017 at 09:20

Does anyone know something about the used anti-aliasing filter?

Does the filter change if he ODR (Output Data Rate) is changed? The datasheet tells me YES.

measured 19.8 Hz with the 100 Hz ODR.

The anti-aliasing filter doesn't work as required. It should block frequencies above 50 Hz.

The correct frequency is marked red below (sweep from 14 Hz to 19.8 Hz, later constant 19.8 Hz):

Are there informations concerning the characteristic of the anti-aliasing filter?

If the filter is always the same (setup for the fastest data rate), then the lower ODR are not useful.

Do I have to use much higher data rates for measuring 19.8 Hz without errors from aliasing?

Visitor II

Posted on May 18, 2017 at 23:28

Any news on the anti-aliasing filter characteristics?

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