The SM124-10E Smart Magnetometer combines an omnipolar GMR sensor element with
with easy-to-use digital signal processing.
A digital output provides precise, programmable thresholds.
An I²C interface provides magnetic field data, as well as a
calibration interface. The device is factory calibrated for accuracy. Calibration coefficients are stored in internal nonvolatile memory.
All commands, data, and coefficients are a single byte, and a
slick, elegant data structure lets you get up and running with
a minimum of firmware.
Key features include:
Can detect magnets more than 50 mm away
I²C and digital threshold outputs
0-1 mT linear range
8-bit / 1% output resolution
−40°C to +125°C operating range
5% FS accuracy for 0 to 85°C
10 kSps sample rate for fast response
6 mA typical supply current
In-plane sensitivity more usable than Hall effect sensors
Programmable offset and gain compensation
Optional magnet temperature compensation
2.2 to 3.6 volt supply
Ultraminiature 2.5 x 2.5 x 0.8 mm TDFN package