Allegro MicroSystems, LLC announces the A1266, a unique sensor IC incorporating a combination of vertical and traditional planar Hall-effect sensor ICs that can detect a magnetic field of either polarity in any direction. Its omnipolar, omnidirectional sensitivity makes it well-suited for detecting magnetic tampering in smart meters, ATMs, gambling/gaming machines, ticket machines, and electronic locks. The A1266 can also serve as a general-purpose magnetic switch that is relatively insensitive to magnet orientation or polarity in applications such as games, consumer electronics, white goods, etc.
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This tiny surface-mount SOT23 IC is functionally equivalent to an array of three standard hall sensors mounted in three different orientations, something that is not possible with a single circuit board and all surface-mount components. The device has higher sensitivity than most conventional Hall-effect switches (BOP = 25 G typical). The result is high-sensitivity 3D tamper or proximity sensing in less space with lower assembly cost.
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Two configurations are available: one with a separate output for each sensing direction (X, Y, Z) and one with a combined output (X+Y+Z). Package type LH is a modified SOT23W surface mount package that is RoHS-compliant and lead (Pb) free (suffix, -T), with a 100% matte-tin plated leadframe. The pricing in quantities of 1,000 is: A1266ELHLT-T (X, Y, and Z outputs), $0.41; A1266ELHLT-T (single X+Y+Z output), $0.41.
source: http://www.powerpulse.net/story.php?storyID=32315
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