Allegro MicroSystems A31331 3D Linear Hall-Effect Sensor is a flexible magnetic sensor that can measure the applied flux density in any one, two, or three axes and calculate the angle in up to two user-defined planes. The A31331 comes in a standard field configuration of ±600G. Additionally, the device is preconfigured for SPI or I2C. The magnetic temperature coefficient is customer-programmable to support various magnet properties. The A31331 supports two digital interfaces: four-wire SPI or I2C for ease of use. The SPI can operate at up to 10MHz for high-speed applications, and the I2C interface can operate at up to 1MHz. The I2C address can be set by external resistors (16 unique addresses) or programmed into EEPROM via I2C (127 unique addresses), allowing multiple devices on the same bus.
