A31010: Small Low Power Unidirectional Linear Hall-Effect with Sleep Mode

EH-DFN

Description

Top Features

Packaging

The A31010 family of unipolar linear Hall-effect sensor ICs is an ideal part for battery powered head-on (i.e. pushbutton) and slide-by (i.e. slider) motion detection present in game controller triggers, keyboards, security systems, liquid level, and other consumer applications. 

The unipolar operation outputs a voltage proportional to the applied positive magnetic field ensuring maximum resolution while the external Vref pin provides flexibility for the output reference enabling operation in a ratiometric or non-ratiometric mode.

The fast wakeup and sleep time allows the A31010 to transition quickly between sleep and awake modes and the user-controlled sleep pin enables flexible duty cycles to optimize power consumption. These features, coupled with a low supply voltage rating down to 2.5 V, make this IC ideal for battery-powered applications while enabling easy integration to 3.3 V microcontrollers.

These devices are available in a small, lead free, 2 mm × 3 mm, 0.75 mm height DFN-6 package to minimize PCB board area.

  • User-controlled sleep mode with fast (< 60 µs) wakeup time for lag-free power savings
  • 3.2 mA active and 25 µA sleep current reduces total power consumption and extends battery life
  • Operates down to 2.5 V supply for battery applications
  • Low quiescent voltage output maximizes output range and resolution
  • Small size DFN-6 (2 mm x 3 mm x 0.75 mm) for minimal board area
EH-DFN

These devices are available in a small, lead free, 2 mm × 3 mm, 0.75 mm height DFN-6 package to minimize PCB board area (suffix EH). 

EH Package Documentation

  • Game controllers
  • Joysticks
  • Triggers
  • Personal electronics
  • Keyboards
  • Virtual and augmented reality devices
  • Human-machine interfaces

Part Number Specifications and Availability

Documentation and Resources

Documentation

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Application Note
Unipolar Hall-Effect Sensor IC Basics