The ADV001-00 sensor from Rhopoint Components is based on a new GMR ( Giant Magneto Resistive ) material that allows the sensor to maintain an 'operate' point with the application of a negative (South) magnetic field, and a 'release' point with the application of a positive (North) magnetic field. This is especially useful when used with magnetic encoders that have alternating North/South poles, or in any other application where one polarity of field is required to turn the part on, and the opposite polarity is required to turn it off.
Extremely low magnetic operate points , +/- 4 Oe allow large air gaps between the sensor and the target magnet. This means that mechanical tolerances can be quite low which reduces mechanical engineering costs.
The sensor will operate in the temperature range -40°C to +125°C and can provide an output current of up to 20mA.
The device is available in RoHS-compliant MSOP8 or 2.5 mm x 2.5 mm TDFN packages.