Hello,

For a part of my P.h. Degree I'm evaluating the propagation of measurement errors of MEMS, using from now an ADXL335 as experimental reference (using Z axis), in the reconstruction of speed and displacement by double integration, more precisely, evaluating the movement of a hydraulic cylinder.

Checking the datasheet I have doubts about some errors definition. Checking figures 5 and 17 of “Typical performance characteristics; N > 1000 for all typical performance plots, unless otherwise noted.” Shall I understand that it’s referred to repetitibility, i.e. a multiple measures of a single “typical” device or a sample of different devices, single typical measure? From my point of view it’s the first case but I need to be sure.

On the other hand, is any data available about hysteresis of measurement? More precisely, does sensitivity variation data exist between positive and negative acceleration measures?

Thank you on advance for any response. It will be very helpful for my research.

BR

Thank you for your interest. N > 1000 typically means that this has been observed on more than 1000 units. Out of curiosity, for the stated purpose, could you help us understand your selection of the ADXL335? The ADXL355 would seem to offer significant performance advantages. Just want to make sure we can focus our research/support on what matters for you.