Magnetoresistive Sensors function on the principle of magnetoresistive effect where the magnetic field changes the resistivity of current. Their non-contact operation eliminates wear and friction. Potential applications of Magnetoresistive Sensors include linear displacement measurement, current measurement and metal detection
This Honeywell Sensor has omnipolar sensing and push-pull output. These Nanopower Series Magnetoresistive (MR) Sensors do not require the magnet polarity to be identified, simplifying installation and potentially reducing system cost. Honeywell SM351LT is used in water, electric and gas utility meters, building access control; reed switch replacement for battery-operated security systems and industrial smoke detectors. It is also used in exercise equipment, infusion pumps and drawer position sensing.
Product Highlights:
- Push-pull output: Does not require external pull-up resistor
- Non-chopper stabilized design
- RoHS-compliant materials: Meets Directive 2002/95/EC
- Package: SOT-23
- High sensitivity: 7 Gauss typ., 11 Gauss max.
- Nanopower: Average current of 360 nA typ.
- Supply voltage range: 1.65 Vdc to 5.5 Vdc simplifies design-in
- Omnipolar sensing: Activates with either pole from a magnet
- Temperature range: -40 °C to 85 °C [-40 °F to 185 °F]