STMicroelectronics Unveils MEMS Digital Compass Module
January 05 2010 - 10:21AM
PR Newswire (US)
High-performance motion and magnetic-sensing device enhances mobile
navigation and enables advanced location-based services GENEVA,
Jan. 5 /PRNewswire-FirstCall/ -- STMicroelectronics (NYSE:STM), the
leading supplier of MEMS for consumer and portable applications(1),
has integrated a 3-axis digital accelerometer with a 3-axis digital
magnetic sensor in a single module. The digital compass module
combines high accuracy with small form factor and low power
consumption at a competitive cost, meeting the growing market
demand for advanced navigation capabilities and emerging smart
location-based services. ST's high-performance system-in-package
digital compass uses magneto-resistive technology from Honeywell
and aims to accelerate the adoption of enhanced electronic
compassing in portable consumer applications, including direction
finding, map/display orientation, location-based services and
pedestrian dead reckoning. The combination of high-performance
motion and magnetic sensing enhances the mobile-user experience in
a number of ways. ST's new module adds forward direction
orientation that enables application developers to improve the use
of limited phone/PDA display size for maps by putting the current
user position at the bottom of the map with the rest of the display
in the forward ('up ahead') direction. ST's digital compass
provides accurate heading information, to indicate the direction in
which a person or vehicle is moving, when GPS is not available. It
also supports dead-reckoning applications, including pedestrian
navigation in places with no or low GPS signal, such as inside
buildings and structures or in mountainous and forested terrain.
Compass modules in handsets open new possibilities for advanced
location-based services. With compassing and GPS capabilities,
consumers will be able to identify and retrieve information on
nearby points of interest, such as restaurants or shops, by simply
pointing their mobile devices in the direction of the object
concerned. "As the one-stop MEMS supplier of choice,
STMicroelectronics is paving the way to smart sensor modules," said
Benedetto Vigna, Group Vice President and General Manager of the
MEMS, Sensors and High Performance Analog Division,
STMicroelectronics. "We have accelerometers, gyroscopes,
microphones and now, thanks to our cooperation with Honeywell, also
magnetic sensors. We are ushering in an era of integrated sensing
capabilities." The new module leverages ST's market-proven
manufacturing technology and robust design that ST has already
successfully applied to more than 600 million accelerometers sold
into the market. High-precision sensing couples with smart embedded
features, including wake-up/power-down function and 6D recognition,
which signals if the device is up or down along all three axes
(x,y,z). The device has a linear acceleration full-scale of plus or
minus 2/plus or minus 4/plus or minus 8g and a magnetic field
full-scale from plus or minus 1.3 up to plus or minus 8 gauss(2),
both fully selectable by the user. The magnetic sensing element
that measures the strength and direction of the Earth's magnetic
field and determines the heading relative to magnetic north is
based on Honeywell's Anisotropic Magneto-Resistive (AMR)
technology. This technology combines best-in-class accuracy in
compass calculations with low power consumption, which is crucial
in battery-hungry portable devices. The AMR technology provides the
same sensitivity on the z axis as it does on the x and y axes,
eliminating the need for flux concentrators used in Hall-effect
type sensors that can shift the sensor offset after it has been
magnetized. This market-unique three-axis sensing approach reduces
measurement errors in ultra-low magnetic field strength
environments, such as in metal buildings, automobiles, or in higher
latitudes like Canada or Northern Europe. Moreover, Honeywell's
magnetic sensor design includes a built-in offset cancellation
circuit to minimize the need for calibration, and patented
set/reset straps that de-gauss, or de-magnetize, the sensor for
each measurement to improve accuracy. According to iSuppli, the
market for MEMS digital compasses for use in mobile phone
applications alone will grow from 8 million units in 2008 to 540
million units in 2013 - a CAGR of 129%. During the same time
period, revenues for these components will grow at a CAGR of 110%,
from $8 million to $325 million. ST's LSM303DLH digital compass
module fits in an eco-friendly package of 5x5x1 mm and it is
software- and register-compatible with ST's three-axis digital
accelerometer family (LIS331DLH/M/F). Samples are available and the
device is ready for mass production. Unit pricing is $2.5 for
volumes in the range of 50,000 pieces. For further information on
ST's complete MEMS portfolio see http://www.st.com/mems. About
STMicroelectronics STMicroelectronics is a global leader serving
customers across the spectrum of electronics applications with
innovative semiconductor solutions. ST aims to be the undisputed
leader in multimedia convergence and power applications leveraging
its vast array of technologies, design expertise and combination of
intellectual property portfolio, strategic partnerships and
manufacturing strength. In 2008, the Company's net revenues were
$9.84 billion. Further information on ST can be found at
http://www.st.com/. (1) According to iSuppli (December 2009) (2)
Gauss (G) is the unit of measurement of magnetic flux density, or
the magnitude of a magnetic field at a given point. The magnetic
field magnitude measured at the surface of the Earth is about half
a gauss. DATASOURCE: STMicroelectronics CONTACT: Michael Markowitz
of STMicroelectronics, +1-781-591-0354, Web Site:
http://www.st.com/
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