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Low Sensitivity Extended Temperature Micropower Omnipolar Hall Effect Switch

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The AH1815 is a low-sensitivity, micro-power Omnipolar Hall effect
switch IC, designed for portable and battery powered consumer
equipment for home appliance and industrial applications such as
smart-meter magnetic-tamper detection. Based on two sensitive Hall
effect plates and a chopper-stabilized architecture, the AH1815
provides a reliable solution over the whole operating range. To
support portable and battery powered equipment, the design has
been optimized to operate over the supply range of 2.5V to 5.5V and
consumes only 24μW with a supply of 3V.
The single open drain output can switch on with either a north or
south pole of sufficient strength. When the magnetic flux density (B)
perpendicular to the package is larger than operate point (Bop) the
output is switched on (pulled low). The output is turned off when
B becomes lower than the release point (Brp). The output will remain
off when there is no magnetic field.


  • Doors, Lids, Covers and Tray Position Detect Switches
  • Display Switch for Portable PCs and Tablets
  • On/Off Switch for PDAs and Digital Cameras
  • Liquid Level Detection for Coffee Machines
  • Smart Meters
  • Position, Proximity and Level Detection Contactless Switch in Battery Powered Consumer, Home Appliances and Industrial Applications


  • Omnipolar (north or south pole) Operation
  • Low Sensitivity
  • Single Open Drain Output
  • Micropower Operation
  • 2.5V to 5.5V Operating Range
  • Chopper Stabilized Design Provides Superior Temperature Stability Minimal Switch Point Drift Enhanced Immunity to Stress
  • Good RF Noise Immunity
  • -40°C to +125°C Operating Temperature
  • ESD (HBM) > 6KV
  • Industry Standard SC59 Package
  • Totally Lead-Free & Fully RoHS Compliant 
  • Halogen and Antimony Free. “Green” Device 

Product Specifications

Product Parameters

Qualified to AECQ10x No
Automotive Compliant PPAP No
# Outputs 1
Output Type Open Drain
Active High or Low Low
Sensitivity Low
Operating Voltage 2.5 to 5.5V V
Average Supply Current 8 µA
Min Operating Point ±Bop (Guass) 255
Typ Operating Point ±Bop (Guass) 395
Max Operating Point ±Bop (Guass) 540
Min Release Point ±Brp (Guass) 230
Typ Release Point ±Brp (Guass) 335
Max Release Point ±Brp (Guass) 495
Operating Ambient Temperature Range -40 to 125 °C

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Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AH1815-P-B Avnet EU 1000 8/8/2020 Buy Now Germany
AH1815-P-B Digi-Key Electronics 3079 8/8/2020 Buy Now United States
AH1815-P-B Farnell, An Avnet Company 995 8/8/2020 Buy Now England
AH1815-P-B Mouser Electronics Inc. 871 8/8/2020 Buy Now United States
AH1815-W-7 Digi-Key Electronics 1333 8/8/2020 Buy Now United States
AH1815-W-7 Farnell, An Avnet Company 2990 8/8/2020 Buy Now England
AH1815-W-7 Mouser Electronics Inc. 4150 8/8/2020 Buy Now United States
AH1815-W-7 Future Electronics - Asia 3000 8/7/2020 Singapore
AH1815-Z-7 Digi-Key Electronics 2467 8/8/2020 Buy Now United States
AH1815-Z-7 Mouser Electronics Inc. 2968 8/8/2020 Buy Now United States