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

Description

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.

Top Features

  • 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

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
A31010SEHALT-10 6-lead MLP -20°C to 85°C Yes View Data New Contact your
local sales rep
Check
Distributor Stock
A31010SEHALT-4 6-lead MLP -20°C to 85°C Yes View Data New Contact your
local sales rep
Check
Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

EH-DFN

Packaging

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