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.
Sensors
Simple, compact, cost-effective and easy to design in
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Key features and benefits
- Zero speed capability
- Wide air gap between sensor and target
- Large measuring distance / air gap up to 2.9mm
- Speed detection capability down to 0 Hz
- High-frequency: 25 kHz
- Wide frequency range
- Output characteristics: two-wire current and open collector interface
- Prepared for injection moulding (stable leadframe, positioning aids)
- Lower total cost of electro-mechanical system due to MR benefits and integrated components
Key applications
- Anti-blocking systems (ABS)
- Engine management (crankshaft, camshaft)
- Transmission systems
- Vehicle speed
Related links
Brochure
- Constantly aware of that speed sensation; Rotational speed sensor (pdf) (v.1.0, 2006-09-01)
- The sixth sense for automotive applications; Magnetoresistive sensors for rotational, angle and weak-field measurement (pdf) (v.1.0, 2006-09-01)
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Descriptive summary
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.
Products
| Type number | Description | Status | Quick access |
|---|---|---|---|
| KMI15 | Rotational speed sensor | Download datasheet Order sample Buy online | |
| KMI16 | Integrated rotational speed sensor | Download datasheet Order sample Buy online |







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