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ADXL345 output variation vs sample rate?

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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


0x00d4

0x00cf

0x00d2

0x00d5

0x00d2

0x00d5

0x00d1

0x00d3

at 800SPS

 

…and

0x00e8

0x00ea

0x00f2

0x00e2

0x00e4

0x00ec

0x00e6

0x00e2

at 1600SPS


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