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STMicro intros new line of low-g linear accelerometers

Posted: 09 Oct 2006 ?? ?Print Version ?Bookmark and Share

Keywords:STMicroelectronics? STMicro? LIS302? accelerometers? motion sensors?

ST's LIS302 3-axis motion sensors

Touting a small form factor and low power consumption, STMicroelectronics has launched the first two devices in its new family of low-g linear accelerometers. The LIS302 sensors target HDD protection and motion-controlled operation in portable devices such as mobile phones, digital audio players and laptop computers.

ST said the LIS302 3-axis motion sensorsthe LIS302DL and LIS302ALBrepresent a significant step forward in product miniaturization. The devices are housed in a 3-by-5-by-0.9mm plastic package that meets the space and weight constraints in mobile phones and other portable electronic devices. The accelerometers deliver low power consumption of 1mW and very high immunity to vibration and shock survivability up to 10,000g.

The LIS302DL is said to be the first sensor on the market with a standard SPI/I2C digital interface and two independent programmable interrupt signals. The two separate signals make it possible to monitor the end device for free fall and high-g motion states at the same time. Alternatively, both signals can be used for either state at two different thresholds, for instance, to distinguish between free fall and rolling for greater design flexibility.

The analog-output LIS302ALB sensor provides separated acceleration values for all three (x, y, z) axes, as well as a multiplexed signal. The embedded 3-to-1 multiplexer saves costs and space on the board, as well as reduces the layout risks inherent in multiple analog nets, said the company. Applications vary including free-fall detection for hard-disk data protection, vibration monitoring and compensation, anti-theft and vehicle navigation systems, and motion user interfaces in mobile and gaming devices.

The LIS302DL and LIS302ALB sensors have been in production for selected markets and will be available by the end of 2006 for use in all markets. Both devices, which use ST's ECOPACK Pb-free technology for RoHS compliance, are housed in the ultracompact Pb-free LGA package. Pricing for the Americas region is $4.50 for the LIS302ALB and $5 for the LIS302DL in quantities of 10,000.

- Gina Roos

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