Compact and easy to design in, NXP®.s magnetoresistive rotational speed sensors provide a simple and cost-effective rotational sensing solution. They are ready to use and include the sensor, a back-biasing magnet and an advanced signal conditioning IC, all housed in a special multi-chip package.
The well-tried and trusted KMI1xx technology provides high robustness against large magnetic fields and high temperatures, and is very stable over temperature and life time. A choice of 3 different back-biasing magnets covers sensing of active or passive targets. Devices in the KMI15 and KMI20 families have a current output using two-wire technology, while those in the KMI16 and KMI18 families feature an open collector output, with three-wire technology.