Is it possible to enable the low-pass antialiasing filter of the ADXL372 without enabling the low-pass activity filter?

Hello nok thanks for posting and pointing out this point of confusion in the DS we will gather this feedback for future DS revisions on this family of products.

LPF_DISABLE bit 3 from POWER_CTL reg (0x3F) should only turn off the activity LPF not the AA one.

nok said:

The ODR is 3200Hz and I would like to configure the low-pass antialiasing filter to 200Hz.

This configuration is possible. Besides this, shock events generally needs a higher BW to properly detect the whole shock signal profile. Please refer to the following app note: AN-1266: Autonomous Shock Event Monitoring with the ADXL375 | Analog Devices



hope this helps, let me know if you need further assistance.

Mario SM

Hello nok thanks for posting and pointing out this point of confusion in the DS we will gather this feedback for future DS revisions on this family of products.

LPF_DISABLE bit 3 from POWER_CTL reg (0x3F) should only turn off the activity LPF not the AA one.

nok said:

The ODR is 3200Hz and I would like to configure the low-pass antialiasing filter to 200Hz.

This configuration is possible. Besides this, shock events generally needs a higher BW to properly detect the whole shock signal profile. Please refer to the following app note: AN-1266: Autonomous Shock Event Monitoring with the ADXL375 | Analog Devices



hope this helps, let me know if you need further assistance.

Mario SM