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Weakfield sensors
NXP's KMZ10 family and KMZ51/52 magnetoresistive sensors are ideal for applications requiring the sensing of weak magnetic fields, like that of the Earth. Consisting of four magnetically sensitive permalloy resistors arranged in a Wheatstone bridge configuration, maximizing sensitivity while minimizing temperature influences.
The sensors offer all the inherent advantages of magnetoresistive technology, with none of the trade-offs between precision and sensitivity, frequency limitations, temperature restrictions and other drawbacks found with many other sensing techniques.
The KMZ51/52 have built-in coils for individual offset compensation. Many applications require a two-sensor element, so our KMZ52 also integrates two-coordinate measurement in one package, reducing design-in effort even further.
Key benefits
- High sensitivity and reliability
- Wear-free operation
- Built-in compensation coils
- Wide frequency range
- High operating temperatures
Key applications
- Electronic compass
- Traffic detection
- Earth's magnetic field compensation
Information resources
The sixth sense for automotive applications - Magnetoresistive sensors for rotational, angle and weak-field measurementMagnetoresistive sensors for magnetic field measurement
Application note AN00022 - Electronic compass design using KMZ51 and KMZ52.