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High Sensitivity Micropower Omnipolar Hall Effect Switch

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The AH1806 is a high sensitivity, micropower Omnipolar Hall Effect switch IC designed for portable and battery powered equipment such as cellular phones, PDA’s and portable PC’s to home appliance and industrial applications. Based on two sensitive Hall Effect plates and a chopper stabilized architecture the AH1806 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 3.6V and consumes only 24uW with a supply of 3V. To minimize PCB space AH1806 is packaged in samll low profile package. The single open drain output can switched 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 (pul°C 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. The AH1806 is available in a small low profile SOT553 and industry standard SC59 packages.


  • Cover Switch in Clam-Shell or Slide Type Cellular Phones
  • Display Switch for Portable PCs
  • On/Off Switch for PDAs and Digital Cameras
  • Contact-Less Switch in Consumer Products
  • Contact-less switch in home appliances and industrial applications

Product Specifications

Product Parameters

Qualified to AECQ10x No
Automotive Compliant PPAP No
# Outputs 1
Output Type Open Drain
Active High or Low Low
Sensitivity High
Operating Voltage 2.5 to 5.5 V
Average Supply Current 8 µA
Min Operating Point ±Bop (Guass) 15
Typ Operating Point ±Bop (Guass) 30
Max Operating Point ±Bop (Guass) 45
Min Release Point ±Brp (Guass) 10
Typ Release Point ±Brp (Guass) 20
Max Release Point ±Brp (Guass) 40
Operating Ambient Temperature Range -40 to 85 °C

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Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AH1806-P-A Digi-Key Electronics 2183 8/8/2020 Buy Now United States
AH1806-P-A Farnell, An Avnet Company 4000 8/8/2020 Buy Now England
AH1806-P-A Mouser Electronics Inc. 5399 8/8/2020 Buy Now United States
AH1806-P-B Avnet EU 2000 8/8/2020 Buy Now Germany
AH1806-P-B Arrow Electronics 1820 8/8/2020 Buy Now United States
AH1806-P-B Digi-Key Electronics 10568 8/8/2020 Buy Now United States
AH1806-P-B Farnell, An Avnet Company 986 8/8/2020 Buy Now England
AH1806-P-B Mouser Electronics Inc. 4243 8/8/2020 Buy Now United States
AH1806-W-7 Avnet EU 1945 8/8/2020 Buy Now Germany
AH1806-W-7 Arrow Electronics 4 8/8/2020 Buy Now United States
AH1806-W-7 Arrow/Components Agent Ltd. 3000 8/8/2020 Buy Now Hong Kong
AH1806-W-7 Digi-Key Electronics 24481 8/8/2020 Buy Now United States
AH1806-W-7 Mouser Electronics Inc. 21000 8/8/2020 Buy Now United States
AH1806-W-7 Future Electronics - Europe 24000 8/7/2020 England
AH1806-W-7 RS Components 200 8/7/2020 Buy Now England
AH1806-W-7 RS Components Ltd. 200 8/7/2020 Buy Now Japan
AH1806-Z-7 Mouser Electronics Inc. 4257 8/8/2020 Buy Now United States
AH1806-Z-7 RS Components 5980 8/7/2020 Buy Now England
AH1806-Z-7 RS Components Ltd. 5980 8/7/2020 Buy Now Japan