ATS19580 Large Air Gap GMR ICs Allegro MicroSystems ATS19580 Large Air Gap GMR ICs is a giant magnetoresistance (GMR) integrated circuit (IC) that supports a user-friendly two-wire solution for applications requiring speed and direction information using ferromagnetic gear tooth targets. The ATS19580 is fully integrated with the GMR IC, a protection capacitor for EMC robustness, and a back-bias magnet in a single-in-line package.