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ADXL203 offset with vibration

Question asked by Roman_ on Jul 16, 2015
Latest reply on Nov 4, 2015 by Roman_

Hi

 

We are using ADXL203 accelerometers in our device and we have faced the problem: during vibration tests offset of the accelerometers output significaly increases depending of the vibration frequency.

 

ADXL203_offset.jpg

 

Biggest offset is at the 150 Hz vibration and reached about 200 mg (see the picture above).

ADXL203 bandwithe is set to 50Hz (0.1 uF capacitor).

We did not see such effect on the ADXL321 accelerometers placed on the same board with.

 

What is the possible reason of this effect and how can we reduce it.

 

Thanks,

Roman.

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