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Posted in | Nanomagnetics

Nanotechnology-based Geo-Magnetic Device for Navigation and Mobile Compassing

Published on April 26, 2011 at 1:12 AM

By Cameron Chai

STMicroelectronics has launched a series of geo-magnetic modules. The low-power product integrates three-axis sensing of linear and magnetic movement in a 5x5x1mm package to deliver navigation and location-based activities in mobile consumer devices. Market research analyst, iSuppli predicts that the market for digital compasses could grow at a CAGR of 12%, by 2015.

Motion and magnetic sensors ensure improvements in electronic compassing used in mobile phones, direction finding, map/display orientation, location-based activities and pedestrian dead reckoning.

The LSM303DLM geo-magnetic device has been developed with a micromachining technology procedure. It combines precision sensing with smart integrated features such as 6D orientation sensing; two programmable interrupt signals ensuring prompt notification of movement sensing, free fall, and wake-up/power-down functionality. It delivers energy efficiency on the chip and system levels and consumes 360micro-A during operation, which signifies a 50% decrease over devices presently under production.

The module offers precise yield across full ranges of ±2/4/8g (linear acceleration) and from ±1.3 to ±8Gauss(3)  (magnetic field). It remains  stable over time and various operating temperatures, and enhanced magnetic sensing resolution. It is pin-to-pin and can be used with the software of the earlier edition, enabling users to 'hot swap' and save application development costs.

Source: http://www.st.com

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