NVE Corporation Product Announcement


NVE Introduces Smart GMR Magnetometer
Versatile sensors are ideal for measuring current or proximity


EDEN PRAIRIE, Minn.—December 6, 2018—NVE Corporation today announced the new SM124-10E Smart Magnetometer. The new sensor combines a Giant Magnetoresistance (GMR) sensor element with elegant digital signal processing. The versatile product can be used for current or proximity measurements.

SM124 Detailed Block Diagram

In-Plane Sensitivity
Unlike awkward, old-fashioned Hall-effect sensors, GMR is sensitive in-plane for optimal current sensing and easy mechanical interfaces.

A Slick, Elegant Data Structure
All data and parameters are input and output as single bytes (eight bits). This provides better than 1% precision while eliminating the need to concatenate upper and lower bytes.

No Communications Overhead
Data are always valid, so there is no need to wait for data during an IC read, and there are no set-up commands or error handling required. Sensitivity and Offset Calibration

Factory Calibrated
The sensor is factory calibrated for sensitivity, offset, linearity, and temperature compensation. Users can also calibrate the output for a particular system.

Amazing Features
Key SM124-10E features include:
  • Can detect magnets more than 50 mm away
  • I²C and digital threshold outputs
  • 7-bit output resolution
  • In-plane sensitivity—more usable than Hall effect sensors
  • Programmable offset and gain compensation
  • Calibrated internal temperature sensor
  • Internal temperature compensation
  • Optional magnet temperature compensation
  • 2.2 to 3.6V supply
  • Ultraminiature 2.5 x 2.5 x 0.8 mm TDFN package

Evaluation Kit
The simple AG952-07 Evaluation Kit has everything needed to calibrate, test, and evaluate SM124-10E Smart Magnetometers.
AG952-07E Evaluation Kit

The kit includes:
  • A 1-inch by 1.625-inch (25 mm by 41 mm) USB-powered evaluation board with:
        - an SM124-10E GMR Smart Magnetometer
        - a microcontroller connected to the sensor via I²C
        - a regulated 3.3 volt supply to power the SM124-10E
        - a current-carrying trace under the sensor for evaluating as a current sensor
  • A small ceramic magnet for evaluating as a proximity sensor
  • USB cable to connect the Evaluation Board to a computer
  • Windows user interface software

Easy Programming
A self-contained programming module with easy-to-use thumbwheel switches and a socket will be available soon to program the sensors’ switching thresholds without need of a computer or microcontroller.

Part of a Family
The SM124 is NVE's second Smart Magnetometer model. The SM324 tunneling magnetoresistance (TMR) smart magnetometer was introduced in August. Billed as the world's first TMR smart magnetometer, the SM324 boasts extremely high accuracy. The SM124 has a simpler interface and is higher speed.

Available Now
SM124-10E Smart Magnetometers are priced at $1.46 each in 1000-piece quantities. AG952-07E Smart Magnetometer Evaluation Kits are priced at only $95.00 each. Sensors and kits are in stock for immediate delivery.

Click here to download the SM124 datasheet, or visit www.nve.com for more information.

NVE is a leader in the practical commercialization of spintronics, a nanotechnology that relies on electron spin rather than electron charge to acquire, store and transmit information. The company manufactures high-performance spintronic products including sensors and couplers that are used to acquire and transmit data. NVE has also licensed its spintronic magnetoresistive random access memory technology, commonly known as MRAM.

Statements used in this announcement that relate to future plans, events, or performance are forward-looking statements that are subject to certain risks and uncertainties including, among others the risk factors listed from time to time in our filings with the SEC, including our Annual Report on Form 10-K and other reports filed with the SEC.

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