The LIS3MDLTR is a three-axis magnetoresistive sensor that measures magnetic field strength along X, Y, and Z axes with 16-bit resolution. It outputs data over either I²C or SPI, so it can connect directly to the same bus as an accelerometer or gyroscope without an extra ADC channel. The sensing range is selectable between ±0.4 mT, ±0.8 mT, ±1.2 mT, and ±1.6 mT. Choosing the ±0.4 mT range gives the finest resolution for weak-field measurements like the Earth's magnetic compass heading; the ±1.6 mT range handles stronger nearby magnets without saturating the sensor. Supply voltage spans 1.9 V to 3.6 V. Typical supply current is 270 µA.
Package and footprint considerations for layout
The LIS3MDLTR comes in a 12-VFLGA package with a 2x2 mm body (supplier device package 12-LGA). The LGA land pattern requires a solder-mask-defined pad on the PCB; the exposed centre pad should be connected to the ground plane for thermal and mechanical stability.
ROHS3 compliance is confirmed, which simplifies EU and global regulatory acceptance.