I have a question about VRE in the ADXL356.
What happens when there is a high-amplitude (close to 41g) high-frequency vibration at the same time as a low-amplitude low-frequency vibration, and we filter out the high-frequency signal using an analog LPF at the MEMS output? Will the VRE produced by the high-amplitude vibration affect the low-amplitude signal, even though the high-amplitude signal has been removed by filtering?
I am concerned that, in this scenario, the low-amplitude signal could experience a VRE that is much higher than what it generates on its own.
This may affect VRE since the high-amplitude high-frequency vibration exceeds the range of the ADXL356 (assuming you have ADXL356C which could support +/-40 g). For more information regarding the effect of the two signals on each other on VRE, please refer to this: https://www.analog.com/en/technical-articles/vibration-rectification-in-mems-accelerometers.html.
I hope this answers your question.