With very flexible output capability and embedded “smart” features, the LIS331 MEMS-based three-axis linear accelerometers meet the rapidly expanding demand for miniature motion sensors in consumer and industrial markets. The devices come in a 3 mm x 3 mm x 0.9 mm plastic package. Their ultra-compact, robust design ensures very high vibration immunity and shock survivability to 10,000 g. The devices are suitable for a wide range of low-g applications, including motion user interfaces in mobile and gaming devices, free-fall detection for hard-disk data protection, and vibration monitoring and compensation in white-goods appliances. The LIS331DL integrates a standard SPI/I2C digital interface and a number of smart embedded features, including click and double-click recognition, wake-up and motion detection, high-pass filters, and two dedicated highly programmable interrupt lines. The analog-output LIS331AL provides individual acceleration values for all three (x, y, z) axes. The sensor offers a full-scale output range of ±2.0 g, high temperature stability, and tight offset tolerances. It incorporates built-in self-test capability that allows the customer to verify the functioning of the sensor after it has been assembled on board. Samples of the LIS331AL and LIS331DL are available now, with volume production scheduled for later this quarter. Unit pricing for both devices is below $1.50 in large quantities. STMICROELECTRONICS INC., Lexington, MA. (888) 787-3550.
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