MEMS accelerometer from STMicroelectronics boosts price-performance for automotive systems and industrial applications

STMicroelectronics has introduced its first automotive-qualified three-axis MEMS accelerometer. The new device is qualified to AEC-Q100 for automotive applications, fully leveraging its proven 200mm-wafer MEMS fabrication facility to deliver leading-edge MEMS technology at competitive prices for system integrators.

The AIS326DQ accelerometer is the first of a range of products spearheading ST’s strategy to bring economies of scale from its market-leading MEMS business in consumer to new automotive MEMS applications.

The AIS326DQ meets automotive-industry requirements for non-safety applications such as vehicle alarms, tracking and monitoring, black-box systems, seat controls, navigation support and antenna positioning. Its high flexibility and ruggedness also benefit industrial applications such as vibration monitoring in heavy-duty equipment, or shipping-container management and security. Key performance advantages include user-selectable full-scale range of +/- 2g or +/- 6g in all three axes, wide temperature range from –40 to +105 degrees Celsius, and 10,000g shock survivability.

Several features simplify design-in, including 3.3V single-supply operation, 1.8V-compatible I/Os, and an SPI/I2C serial digital output supporting direct connection to a microcontroller. With 12-bit resolution, the AIS326DQ can detect inclination changes as small as one-tenth of a degree. Further capabilities include a data-ready signal to simplify system synchronization, as well as user-configurable inertial wake-up, direction-detection and freefall-interrupt modes. The integrated IC interface is factory calibrated for sensitivity and zero-g level, allowing use without further calibration. An embedded self-test routine is also implemented, which can be activated at any time to verify correct functionality.

For more information, or details on the full range of STMicroelectronics products available from Anglia, please call +44 (0)1945 474747 or email info@anglia.com

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