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How does a MEMS pressure sensor work?


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MEMS @ on December 26, 2009, 1:47
How does it work, I hear it works on a small chip, but how does such a small device detect pressure? Can anyone provide me a simple diagram?

Can anyone provide a simplified circuit diagram of how the MEMS chip work?



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SpeciSample @ on February 12, 2010, 11:23
It works using a diaphragm and a strain gage, take a look at the picture using the link below. The chip measures small changes in the electrical resistance of the strain gage due to expansion/compression and correlates it to the appropriate pressure. http://www.freescale.com/webapp/sps/site/overview.jsp?code=SNSMEMSOVERVIEW