SKU: TH2009
In StockSKU: TH2334
Adafruit TMAG5273 (A2) 3D Hall Effect Magnetometer is a low-power linear magnetic sensor breakout built for precise 3-axis field sensing, motion detection, and rotary position measurement. It integrates independent Hall-effect sensors on the X, Y, and Z axes, with a built-in 12-bit ADC for digital readout over I2C.
Adafruit TMAG5273 (A2) 3D Hall Effect Magnetometer is a low-power linear magnetic sensor breakout built for precise 3-axis field sensing, motion detection, and rotary position measurement. It integrates independent Hall-effect sensors on the X, Y, and Z axes, with a built-in 12-bit ADC for digital readout over I2C.
The A2 variant supports a wider magnetic range of ±133mT / ±266mT, making it well suited for projects that use nearby permanent magnets, such as magnetic rotary encoders, contactless joysticks, smart controls, and motion-sensing mechanisms. An onboard temperature sensor is also available for basic temperature monitoring.
An integrated CORDIC angle engine can calculate full 360° angular position using two user-selected magnetic axes. The chip also supports magnetic gain and offset correction, though those values must be managed by the user and written to the device at boot. This sensor is intended for nearby magnets, not for measuring the earth's magnetic field.
Technical details for the Adafruit TMAG5273 (A2) breakout.
| Brand | Adafruit |
|---|---|
| Model | TMAG5273 (A2) |
| Sensor Type | 3D Hall-effect magnetometer |
| Magnetic Range | ±133mT / ±266mT |
| Interface | I2C |
| ADC Resolution | 12-bit |
| Logic Compatibility | 3.3V and 5V via onboard support circuitry |
| Default I2C Address | 0x35 |
| Connectors | STEMMA QT / Qwiic compatible |
| Mounting | Four 2.5mm mounting holes |
The breakout is easy to wire over I2C and works with breadboards, perfboards, and STEMMA QT / Qwiic-compatible setups.
| Pin | Name | Function |
|---|---|---|
| 1 | VIN | Power input. Supply the same voltage as your microcontroller logic level, such as 3.3V or 5V. |
| 2 | 3Vo | 3.3V regulator output, available for light external use up to 100mA. |
| 3 | GND | Common ground for power and logic. |
| 4 | SCL | I2C clock line. |
| 5 | SDA | I2C data line. |
| 6 | INT | Configurable interrupt pin for input or output use. |
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