FAQ: ADIS16135 Mechanical/Mounting Suggestions

Document created by NevadaMark Employee on Nov 25, 2015
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Q: Bias stability over temperature and time are important in my application, which is using the ADIS16135.  Should I consider using the same mounting suggestions that are in AN-1295, which is focused on another product family? 



There seems to be growing consensus and industry recognition that relates long-term bias stability behaviors in MEMS gyroscopes to the relaxation of mechanical stress profiles on the sensors themselves. Some believe that that the stress changes that happen during this relaxation are similar to the ones that occur during temperature cycling, so we used bias/temperature behaviors in the ADIS16488A, to evaluate a number of mounting approaches for these devices.  AN-1295 contains detailed information on the mounting techniques, which yielded the best results in those experiments.  When we compare the mechanical structure of the ADIS1648x family to the structure in the ADIS16135, there are enough similarities to suggest that using the AN-1295 techniques can improve long-term drift behaviors in the ADIS16135.  However, the differences between to make it difficult to predict the level of improvement that we can expect from using these techniques.


NOTE: These comments have application with the ADIS16133, ADIS16135, ADIS16136 and ADIS16137.