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The SM124-10E smart magnetometer from NVE is designed to provide precise magnetic field measurements, detecting magnets even over 50mm away. It utilises Giant Magnetoresonance (GMR) technology, which is superior compared to the traditional Hall effect devices in terms of sensitivity (0-10 Oe / 0-1 mT linear range), precision (5% accuracy), speed (1kSps sample rate) and noise levels. This magnetometer is a digital device with minimal firmware requirements – it features programmable thresholds, offset and other values and magnetic field and calibration data from I2C interface with the calibration coefficients stored in a non-volatile memory. The SM124-10E comes factory calibrated to high accuracy and is available in ultraminiature TDFN6 package (2.5×2.5mm footprint).
- Smart GMR Magnetometer
- High sensitivity of 0-10 Oe / 0-1 mT linear range
- 8bit / 1% output resolution
- Accuracy of 5% of the full scale
- 10kSps sample rate for fast response
- Temperature range of −40°C to +125°C
- 2.2V to 3.6V supply
- 3.3V or 5V compatible I2C interface
- Programmable features include offset and gain correction, I2C address and thresholds
- Easy to use digital signal processing
- Ultraminiature TDFN6 package
Typical applications for the SM124-10E series include:
- Proximity sensing
- Current sensing
- Security and intrusion detection
- Automotive applications
- Cylinder position sensing
The below table gives the full specifications of the NVE SM124-10E smart GMR magnetometer:
