SparkFun Linear 3D Hall-Effect Sensor - TMAG5273 (Qwiic)

The SparkFun TMAG5273 Qwiic Linear 3D Hall-Effect Sensor is a low-power, high-precision magnetic field sensor that can detect a magnetic field's presence, strength, and direction in three dimensions. Ideal for magnetic proximity detection, door and window sensing, mobile rotor control, and more, this board fits perfectly into a compact 2.54cm x 2.54cm Qwiic breakout.

The TMAG5273 from Texas Instruments features a configurable linear magnetic range of either ±40 mT or ±80 mT, along with TI's integrated angle calculation engine (CORDIC) for gain and offset adjustments. It includes magnetic tamper detection and configurable wake-up/threshold settings that can trigger interrupts via the I²C interface or a dedicated interrupt pin.

With a power consumption of just 2.3mA in Active Mode (1µA in sleep mode), a high precision of ±0.5% typical accuracy, a Disable button, and a built-in temperature sensor, the TMAG5273 is an excellent choice for anyone needing a low-power, high-precision magnetic field sensor.

Communication is handled via I²C, with pins broken out to the Qwiic system, eliminating the need for soldering. For those who prefer, the I²C pins are also available on standard 2.54mm-spaced pins.

Features:

Breakout Board

• Dimensions: 2.54cm x 2.54cm standard footprint
• Two horizontal Qwiic connectors
• Four mounting holes compatible with 4-40 screws
• Six PTH pins: 3V3, GND, SCL, SDA, INT, Disable
• Power LED (Red)
• Disable button

TMAG5273 Hall Effect Sensor

• Configurable I²C address: 0x35 (Default) (7-bit)
• Magnetic range (sensitivity): ±40mT (820 LSB/mT) or ±80mT (410 LSB/mT)
• Magnetic drift: 5%
• Rotational accuracy: ±0.5°/360° rotation
• Voltage range: 1.7 - 3.6V
• Power consumption: Sleep: 5nA, Wake-Up/Sleep: 1µA, Active: 2.3mA
• Operating temperature: –40 - 125°C
• Integrated temperature compensation/measurement range: -40 - 170°C
• Configurable data rate with CRC support

Documents:

• Schematic
• Eagle Files
• Board Dimensions
• Hookup Guide
• Datasheet (TMAG5273)
• Qwiic Info Page
• TMAG5273 Arduino Library
• GitHub Hardware Repo

Videos