UGN3503 Linear Hall-Effect Sensor IC (Magnetic Sensor)
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Prices updated: 12 Oct 2026
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About this product
The UGN3503 is a linear Hall-effect sensor IC whose analog output changes in proportion to the strength of the magnetic field. It is used for magnetic field measurement, position and proximity sensing, and current sensing in motors, encoders and hobby projects.
Specifications
- Type
- Linear Hall-effect sensor IC
- Output
- Analog, proportional to magnetic field
- Sensing principle
- Hall effect
- Datasheet
- Available
Frequently asked questions
How do I wire the UGN3503 to a microcontroller?
Power the sensor from the supply specified in its datasheet and connect the analog output to an ADC input. Verify the pin order, supply voltage and sensitivity in the Allegro datasheet before connecting it.
Can it detect simple on/off magnet presence?
It is a linear sensor, so its output varies with field strength rather than switching. For on/off detection, read the analog output and apply a threshold in software or use a comparator.
