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A31301

Allegro
Part Number A31301
Manufacturer Allegro
Description 3D Linear Hall-Effect Sensor
Published Dec 6, 2023
Detailed Description A31301 3D Linear Hall-Effect Sensor with SPI, I2C Interfaces, and Advanced Low-Power Management FEATURES AND BENEFITS •...
Datasheet PDF File A31301 PDF File

A31301
A31301

Overview
A31301 3D Linear Hall-Effect Sensor with SPI, I2C Interfaces, and Advanced Low-Power Management FEATURES AND BENEFITS • Flexible operating modes □ Can measure input in any 1, 2, or 3 axes □ 15-bit angle output from any selectable 2-axes plane • Low RMS angle noise for high system resolution • SPI and I2C interfaces for easy system integration □ Up to 10 MHz SPI and 1 MHz I2C • Ideal for battery-powered, low-voltage applications □ 2.
65 to 3.
6 V analog supply operation □ 1.
8 to 3.
6 V digital supply operation □ Low leakage sleep ICC □ Low-power duty cycle mode options for additional power savings • Flexible multifunction pin for interrupt and sample-start functionality □ Interrupt pin provides digital output when user-defined threshold has been exceeded • On-chip EEPROM for storing factory and customer- configured settings • Low-profile 3 mm × 3 mm DFN package for space- constrained applications • –40°C to 85ºC operation APPLICATIONS • Camera gimbals • Gamepad joysticks • Motor control feedback • RC autonomous vehicles • Robotic position sensing • Industrial motor control DESCRIPTION The A31301 three-axis Hall-effect sensor IC is a flexible magnetic sensor capable of measuring the applied flux density in any 1, 2, or 3 axes as well as calculating the angle in up to any two user defined planes.
The A31301 comes in three standard field configurations of ±600 G, ±1400 G, or ±2000 G.
Additionally, the devices are available preconfigured for SPI or I2C.
Magnetic temperature coefficient is customer-programmable, with a factory default trim for neodymium magnets.
The A31301 supports two different digital interfaces for ease of use: four-wire SPI or I2C.
For high-speed applications, the SPI can operate up to 10 MHz, and the I2C interface can operate up to 1 MHz.
The I2C address can be set by external resistors (16 unique addresses) or can be programmed into EEPROM via I2C (127 unique addresses), allowing for multiple devices on the same bus.
Power management of the A31301 is...


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