AnsweredAssumed Answered

ADXL345 output variation vs sample rate?

Question asked by miller@pasco.com on Nov 21, 2014
Latest reply on Nov 18, 2015 by gandhi

The output varies across different sample rates. No filter rates or any other parameters are changed between the two data sets and INT_1 is used to signal data ready. Below are 8 sequential reads from the z-axis.  The 7% difference in the data from the two sample rates is repeatable.  Why does the output change with sample rate?  Can this be compensated for in some manner? Is there a specification for calibration accuracy across various sample rates?  Thanks for your help. -Steve


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at 800SPS

 

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at 1600SPS

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