Geneva, Switzerland STMicroelectronics has introduced a new generation of 'nano' three-axis linear accelerometers. The LIS331 family of low-power MEMS sensors provides complete output flexibility and embedded smart features for miniaturized motion-sensing solutions in consumer and industrial applications.
The 3-axis motion sensors are said to represent a significant step forward in the
product's miniaturization. Housed in a 3 x 3 x 0.9-mm plastic package, the LIS331 accelerometers provide very high immunity to vibration and shock survivability up to 10,000 g. The 'nano' motion sensors are suitable for a wide range of low-g applications in the consumer and industrial markets 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 host 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 configurable high-pass filters can be turned on to enable motion-activated functions and vibration monitoring regardless of whether the end product is tilted or placed upside down at the moment of measurement. Two separate, highly programmable interrupt signals enable immediate notification of motion detection and click/double-click events.
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.
Pricing: Unit pricing for both devices is below $1.50 in large quantities.
Availability: Samples available now followed by volume production starting in fourth quarter 2007.
Datasheets: LIS331AL and LIS331DL
Product information: Nano motion sensors and MEMS products
STMicroelectronics, 1-781-861-2650, www.st.com