Magnetic sensor needs no figure-8 calibration
Optimized for smart phones, tablet PCs, gaming systems, and other similar high-volume applications, the MMC3280MA three-axis magnetic sensor is designed for use as an electronic compass. It works with its manufacturer’s Intelligent Heading Correction (IHC) library of autocalibration and dynamic-compensation algorithms which, among other things, eliminate the need for users to perform a manual compass calibration (such as the iPhone’s “figure 8” routine).
The high-accuracy (±2°) sensor is small and consumes little power; it comes in a 2 x 2 x 1-mm BGA package and works over a wide voltage range (1.62 to 3.6 V) while drawing only 0.22 mA. (From $0.95 ea / 10,000 — samples available now, prod qty 3rd qtr.)
By Richard Comerford
MEMSIC , Andover , MA
Information 978-738-0900
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