Giant Magnetoresistance (GMR) Technology

 GMR Background

As a world leader in developing, manufacturing, and marketing high-performance integrated circuits, Allegro uses advanced magnetic sensing technology and designs ICs to meet today’s application requirements. Allegro’s new integrated giant magnetoresistance (GMR) effect technology provides an additional tool in the designer’s toolbox to address new applications and to extend the capabilities of their ICs in existing applications.

GMR Image

GMR offers the ability to improve signal to noise, increase resolution, or reduce the required field level for a given solution (smaller magnets, larger air gaps, etc.). Additionally, sensing in-plane to the wafer or IC surface gives the ability to create new, more robust, differentially magnetic solutions than possible with through-plane sensitive Hall technology.

Allegro is one of very few IC manufacturers who directly integrate GMR technology on top of their semiconductor wafers. This integrated approach offers many advantages, including an improvement in reliability by avoiding additional die-to-die bonding, and allowing for a simpler overall design when integrating current carrying lines or positioning the elements versus an external reference.


GMR Products:


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