data brief for further information contact your local stmicroelectronics sales office. february 2011 doc id 18300 rev 1 1/4 4 STEVAL-MKI021V1 mems 3-axis 2g analog-output demonstration board based on the nano accelerometer lis331al features 3-axis, 2g motion sensor with analog output embedded self-test high shock survivability (up to 10000g per 0.1 sec) rohs compliant 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 low- power 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. 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 non- inverting buffer, making both direct sensor outputs and buffered sensor outputs available to the user. the STEVAL-MKI021V1 also provides an easy mean of controlling the po wer-down and self-test pins. STEVAL-MKI021V1 www.st.com
circuit schematic STEVAL-MKI021V1 2/4 doc id 18300 rev 1 1 circuit schematic figure 1. demonstration board schematic and connection diagram 0 o w e r 3 u p p l y * , % 5 u & # n & # , % 5 6 $ $ * 6 8 6 9 6 : 6 / 5 4 6
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STEVAL-MKI021V1 revision history doc id 18300 rev 1 3/4 2 revision history table 1. document revision history date revision changes 23-feb-2011 1 initial release.
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