SparkFun
SparkFun Linear 3D Hall-Effect Sensor - TMAG5273 (Qwiic)
· MPN: SEN-23880
The SparkFun TMAG5273 Linear 3D Hall-Effect Sensor is a low-power, high-precision magnetic field sensor that detects the presence, strength, and direction of...
The SparkFun TMAG5273 Linear 3D Hall-Effect Sensor is a low-power, high-precision magnetic field sensor that detects the presence, strength, and direction of magnetic fields in three dimensions. Built on a standard 25.4 × 25.4 mm (1 × 1 in) Qwiic breakout, it communicates over I²C with no soldering required.
The Texas Instruments TMAG5273 features a configurable linear magnetic range (±40 mT or ±80 mT), an integrated angle calculation engine (CORDIC) with gain and offset adjustment, magnetic tamper detection, and wake-up/threshold interrupts. A built-in temperature sensor and disable button are also included on the breakout.
Key Features
- 3D Magnetic Field Sensing – Measures field strength and direction across X, Y, and Z axes
- Configurable Range – ±40 mT (820 LSB/mT) or ±80 mT (410 LSB/mT)
- High Precision – ±0.5° rotational accuracy over 360°
- Ultra-Low Power – 2.3 mA active, 1 µA wake-up/sleep, 5 nA deep sleep
- Built-In Temperature Sensor – Range −40 °C to +170 °C with compensation
- Qwiic I²C Interface – Two horizontal Qwiic connectors; default address 0x35
- Interrupt Pin – Configurable threshold and tamper detection alerts
- Disable Button – On-board button to disable the sensor
Specifications
- Sensor – Texas Instruments TMAG5273
- Voltage Range – 1.7–3.6 V
- I²C Address – 0x35 (default, configurable)
- Magnetic Drift – 5%
- Operating Temperature – −40 °C to +125 °C
- Configurable Data Rate – With CRC support
- Board Dimensions – 25.4 × 25.4 mm
- Mounting – Four 4-40 screw holes
- Breakout Pins – 3V3, GND, SCL, SDA, INT, Disable
Ideal For
- Magnetic proximity and position detection
- Door and window sensing
- Motor rotor position and control
- Tamper detection and security applications
- Rotary encoder and joystick sensing
Package Contents
- 1× SparkFun Linear 3D Hall-Effect Sensor Breakout (TMAG5273, Qwiic)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- deep sleep
- Deep sleep is a low-power mode where the microcontroller turns off most functions while keeping just enough circuitry active to wake up later. It is important for battery-powered projects because it can greatly extend how long the device runs between charges.
- encoder
- A device attached to a motor or shaft that reports movement, such as rotation steps or position. In a pump system, an encoder can help measure or control how much the motor has turned, which affects how repeatable the watering amount can be.
- LSB
- Least significant bit is the smallest step a digital converter can represent. In a DAC, it tells you the tiniest voltage change the output can make at a given resolution and output range.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
Find this product in
Sensors & Input
TMAG5273 Qwiic Hall-Effect Sensor Schematic
Schematic · 151.9 KB · Click any page to view full size
TMAG5273 Sensor Datasheet
Datasheet · 2.0 MB · Click any page to view full size
TMAG5273 Qwiic Hall-Effect Sensor Board Dimensions
Mechanical Drawings · 150.4 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 760.8 KB · Click any page to view full size
Resources & Downloads
Guides, code examples, and more
Related Tutorials
Free guides on learn.littlebird.com.au
