SLYA080 july   2023 TMAG5273

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Problem with Mechanical Knobs and Rotary Encoders
  5. 2Using 3D Hall Sensor for Angle Measurement
  6. 3On-Axis and Off-Axis Test
    1. 3.1 On-Axis Test
    2. 3.2 Off-Axis Test
  7. 4Push-Button Knob Function Test
  8. 5Summary
  9. 6References

5 Summary

TI 3D linear Hall-effect sensors such as the TMAG5273 and TMAG5170 can measure magnetic fields in three directions. These sensors can also calculate angles in any two axes using the on-board CORDIC calculator allowing the MCU to read the angle directly, save MCU resource and easy for customer to use.

Different measurement methods have different requirements for the placement of sensors and magnets. Customers can choose the appropriate measurement method according to their own application scenarios. Usually, in home appliances, the preferable method is to use TMAG5273 3D Hall effect sensors because of low cost, and the sensor's detection angle accuracy can reach 1° without considering the mechanical error, which can meet most home appliance scenarios.