ATS19580 GMR Speed and Direction Sensor IC

Allegro's ATS19580 large air gap, giant magnetoresistance (GMR) speed and direction integrated circuit (IC) provides a user-friendly two-wire solution for applications where speed and direction information is required using ferromagnetic gear-tooth targets. The fully integrated package includes the GMR IC, a protection capacitor for EMC robustness, and a back-bias magnet in a single-in-line package.

The GMR-based IC is designed for use in conjunction with ferromagnetic gear-tooth targets and is orientation compatible with Hall-effect technology. The fully-integrated solution senses large operating air gaps and over a large air gap range. State-of-the-art GMR technology on a monolithic IC with industry-leading signal processing provides accurate speed and direction information in response to low-level differential magnetic signals. The differential sensing offers inherent the rejection of interfering common-mode magnetic fields.