Magnetoresistive sensors offer sensitivity up to 11 Gauss

11th December 2015

Honeywell

Nat Bowers

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Datasheet

Honeywell’s latest addition to its line of magnetoresistive technologies feature highly sensitive sensor ICs, which offer design engineers more flexibility for creating industrial, medical and white goods devices. The Standard Power series offers a maximum sensitivity of 11 Gauss, making the sensors among the most sensitive in their class for standard power applications.

This allows for design with larger air gaps between the sensor IC and the magnet or for the design engineers to decrease the total cost of their designs by using smaller, less expensive magnets.

In addition to high sensitivity, the four Standard Power series sensor ICs (SM351RT, SM451R, SM353RT & SM453R) feature a solid-state, non-contact, no-glass design that makes them durable and reliable. Their supply voltage range (3-24VDC), omnipolar operation, various package options and wide operating temperature range from -40 to +85°C (or -40 to +185°F) simplify the design-in processes for wired applications.

Potential applications include everything from flow sensing in HVAC and anti-tamper detection in utility meters, to RPM sensing in exercise equipment and door position detection.

Joshua Edberg, Director of Packaged Sensors, Sensing and Productivity Solutions, Honeywell, commented: "Market conditions and a greater demand for more-compact devices have many engineers looking for alternative components that simplify their designs without straining budgets. The Standard Power series sensor ICs provide strong alternatives to Hall-effect ICs at a time when rare earth magnet prices are high. They also are solid alternatives to reed switches when high reliability and durability are major considerations.”