STEVAL-MKI021V1

STEVAL-MKI021V1 MEMS 3-axis ± 2g analog-output demonstration board based on the nano accelerometer LIS331AL Data brief Features ■ 3-axis, ±2g motion sensor with analog output ■ embedded self-test ■ high shock survivability (up to 10000g per 0.1 sec) ■ RoHS compliant ) s ( ct u d o Description The STEVAL-MKI021V1 demonstration board is designed to provide the user with a complete, ready-to-use platform for the evaluation of the LIS331AL. The LIS331AL is the smallest consumer lowpower 3-axis linear capacitive accelerometer. It includes a sensing element and an IC interface capable of taking information from the sensing element and providing an analog signal to an external application. ) (s r P e s b O t e l o STEVAL-MKI021V1 t c u d o r In addition to the MEMS sensor, the system includes a linear voltage regulator and a rail-to-rail low-noise quad amplifier configured as a noninverting buffer, making both direct sensor outputs and buffered sensor outputs available to the user. P e t e l o The STEVAL-MKI021V1 also provides an easy mean of controlling the power-down and self-test pins. s b O February 2011 Doc ID 18300 Rev 1 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4 2/4     Doc ID 18300 Rev 1 # N&      2SVD 0$ 34 .# 2SVD .# .# 6DD '.$ 2 +  6$$ .# 2SVD * 6$$ # U& 0OWER3UPPLY s ( t c  *    6$$ # N&   u d o  6OUT8  6OUT8 5 ,)3!, 6OUT 9 6OUT8 6OUT: .# 6OUT9 .#  #Y N&  6OUT:   6OUT9 69 68 #X N& 6$$ t e l o  0OWER$OWN      * )s b O  3ELF4EST ,%     s b O t e l o # U&        5 r P e PSR 6$$               6: ) s ( ct u d o r P e #Z N& 43 6/54 6/54 6  6  6 6 '.$ 6## 6 6 6  6  6/54 6/54 5 6OUT8 6OUT9 6OUT: 6OUT :    * 3ENSOR/UTPUT "UFFERED/UTPUT Figure 1.    * 1   * 5 ,% 68 69 6: Circuit schematic STEVAL-MKI021V1 Circuit schematic Demonstration board schematic and connection diagram    !-6 STEVAL-MKI021V1 2 Revision history Revision history Table 1. Document revision history Date Revision 23-Feb-2011 1 Changes Initial release. ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O Doc ID 18300 Rev 1 3/4 STEVAL-MKI021V1 ) s ( ct Please Read Carefully: u d o Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. r P e All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. t e l o No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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