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Rotational speed sensors
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.
A choice of 3 different back-biasing magnets sensing 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.
Key benefits
- Wide air-gap between sensor and target
- Speed detection capability down to 0 Hz
- Wide frequency range
- Insensitive to vibrations
- Prepared for injection moulding (stable leadframe, positioning aids)
Key applications
- Anti-blocking systems (ABS)
- Engine management (crankshaft, camshaft)
- Transmission systems
- Vehicle speed
Information resources
Rotational speed sensor - Constantly aware of that speed sensationThe sixth sense for automotive applications - Magnetoresistive sensors for rotational, angle and weak-field measurement
Magnetoresistive sensors for magnetic field measurement
Application note AN98087 - Rotational speed sensors KMI15/16