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JTam.1
Associate III
May 21, 2021
Solved

What is happening in time-domain output if the Low pass filter (LPF2) of iis3dwb was set to 1333 Hz?

  • May 21, 2021
  • 1 reply
  • 884 views

What is happening on vibration data output in time-domain if the low pass filter (LPF2) of iis3dwb was set to 1333 Hz? Does the vibration data output in time-domain cannot show any vibration data of 6.3 kHz frequency? Please advise. Thanks!

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Best answer by Eleon BORLINI

Hi @JTam.1​ ,

basically yes, you will get only very attenuated signal above 1333 Hz.

In particular, you can see the amount of attenuation by checking the violet curve in datasheet, p.20:

0693W00000APAf4QAH.png 

This mean that a 6.3kHz signal will be attenuated of 20dB. You'll probably see a little signal if the mechanical input event is intense.

If my reply answered your question, please click on Select as Best at the bottom of this post. This will help other users with the same issue to find the answer faster.

-Eleon

1 reply

Eleon BORLINI
Eleon BORLINIBest answer
ST Employee
May 21, 2021

Hi @JTam.1​ ,

basically yes, you will get only very attenuated signal above 1333 Hz.

In particular, you can see the amount of attenuation by checking the violet curve in datasheet, p.20:

0693W00000APAf4QAH.png 

This mean that a 6.3kHz signal will be attenuated of 20dB. You'll probably see a little signal if the mechanical input event is intense.

If my reply answered your question, please click on Select as Best at the bottom of this post. This will help other users with the same issue to find the answer faster.

-Eleon