Freescale introduces the first magnetometer in its Xtrinsic sensor portfolio

When coupled with an accelerometer and GPS, the Xtrinsic MAG3110 helps give end-users precise orientation and location information for a more comprehensive navigational system. The Xtrinsic MAG3110 also acts as a backup system when both cellular and GPS signals are unavailable by sensing the earth’s magnetic field to provide directional context.

The Xtrinsic MAG3110 is designed to address rapidly growing consumer demand for devices featuring LBS capabilities. LBS has fuelled consumer adoption of a number of popular smart mobile device applications including Foursquare, Facebook Places and Google Goggles. A forecast by Juniper Research predicts global LBS revenues could soar to $12.7 billion by 2014, up from $3 billion in 2009. As this type of functionality gains popularity, end-users are expected to demand always-on navigational connections and more accurate location identification, which can be enabled through the use and design of magnetometer sensor technology such as the Xtrinsic MAG3110.

“LBS capabilities for smart mobile devices are growing increasingly important as consumers continue to seek and adopt compelling applications such as location-determined entertainment and enhanced shopping experiences,” said Demetre Kondylis, vice president and general manager of Freescale’s Sensor & Actuator Solutions Division. “To meet these demands, designers of next-generation smart mobile devices must increasingly incorporate the latest sensor technologies for high accuracy, performance and functionality. The Xtrinsic MAG3110 is Freescale’s first magnetometer-based sensor product that addresses these opportunities, providing end-device manufacturers with advanced, affordable navigational technology required to make their devices and applications innovative, yet affordable.”

A low-noise, high-resolution device, the Xtrinsic MAG3110 magnetometer features minimal averaging requirements for decreased latency and exceptionally reliable readings. The wide dynamic range of the Xtrinsic MAG3110 enables performance even in an environment that has magnetic interference. Freescale designed the Xtrinsic MAG3110 magnetometer to measure the components of the local magnetic field which is the sum of the geomagnetic field and the magnetic field created by components on the circuit board, including distortions, thus providing extremely accurate heading sensing and readings.

The complete Xtrinsic MAG3110 device includes a magnetic field sensing element and an interface integrated circuit that provides signal conditioning, communication and embedded functionality. Magnetic field data is readily passed to the system’s computational engine via an I2C interface. Features include an interrupt signal that indicates when a new set of measured magnetic field strength data is available, thus simplifying data synchronisation. This functionality improves te power efficiency of smart mobile devices, ultimately improving the battery life.

As a leader in sensor technology, Freescale’s introduction of the Xtrinsic MAG3110 magnetometer complements the company’s existing MEMS-based sensor offerings, creating a broad platform for producing extremely accurate electronic compass heading information. When combined with the high-precision Xtrinsic MMA845xQ or MMA9550L families of accelerometers, Freescale’s solution provides a tilt-compensated eCompass for smart mobile devices. Hard iron and soft iron calibration and compensation algorithms are available to provide an extremely comprehensive and accurate solution for location-based applications.


Feature Summary:

* Wide dynamic range: +/- 10,000 micro Tesla
* High resolution in full dynamic range: 0.1 micro Tesla
* 250nT noise
* Normal power consumption mode: 24 micro amps at 1.25 Hz
* 80 Hz maximum sampling rate
* I2C interface at 400 kHz
* Supply voltage: 1.95 to 3.6 V
* OS drivers available
* Data synchronisation interrupts
* Ultra small 2 x 2 x 0.8 mm 10-pin DFN package

* -40°C to +85°C operating temperature range