SONG Meng, CHANG Hong-long, DU Song-jie, et al. Design and fabrication of a low-noise MEMS accelerometer[J]. 2014, 33(9): 88-90+93. DOI: 10.13873/J.1000-9787(2014)09-0088-03.
In order to enhance noise characteristics of micro-accelerometer
design and fabrication scheme of a kind of single-axis MEMS accelerometer based on SOI technology is researched. Large-area-mass block capacitive detecting structure is used
through increasing detecting mass and under the premise that guarantee sensitivity
effectively reduce mechanical Brown noise of microaccelerometer and enhance SNR
then
the micro accelerometer is fabricated by Al support film SOI MEMS process which favors integral precise. Test result show that back ground noise of microaccelerometer is 20 μgn/√Hz