A31301 3D Linear Hall-Effect Sensors

Allegro MicroSystems A31301 3D Linear Hall-Effect Sensors are flexible, three-axis Hall-effect magnetic sensor ICs capable of measuring the applied flux density in any 1-, 2-, or 3-axes and calculating the angle in up to any two user-defined planes. The A31301 comes in three standard field configurations of ±600G, ±1400G, or ±2000G, and the 3mm x 3mm x 0.8mm, 10-contact DFN-packages (EJ) are preconfigured for SPI or I²C interfaces. The magnetic temperature coefficient is user-programmable, with a factory default trim for neodymium magnets. The A31301 sensor ICs support two different digital interfaces (four-wire SPI or I²C). For high-speed applications, the SPI can operate up to 10MHz, and the I²C interface operates up to 1MHz. The I²C address can be set by external resistors (16x unique addresses) or programmed into EEPROM via I²C (127x unique addresses), allowing multiple devices on the same bus.