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High Sensitivity Micropower Omnipolar Hall Effect Switch

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The AH1804 is a micropower Omnipolar Hall effect switch IC with a single output driver with internal pull up and pull down capability. Designed for portable and battery powered equipment such as cellular phones and portable PCs the average supply current is only 12µA at 3.3V. To support battery powered equipment the AH1804 has been optimized to operate over the supply range of 2.5V to 3.6V and uses a sleep function to minimise power consumption. To minimize PCB space the AH1804 is packaged in small low profile package. The outputs of the AH1804 are switched with either a North or South pole of sufficient strength. When the magnetic flux density (B) is larger than operate point (Bop), the output will be turned on (pul°C low) and held until B is lower than release point (Brp). The AH1804 is available in DFN1216-4 and SC59 packages.


• Cover switch in clam-shell and slide cellular phones • Cover switch in Netbook, Notebook, Tablets and PDAs • Camcorders
  • Contact-less switch in portable and battery powered applications
  • Product Specifications

    Product Parameters

    Compliance (Only Automotive supports PPAP) Standard
    Qualified to AEC-Q10x No
    # Outputs 1
    Output Type Push-Pull
    ActiveHigh orLow Low
    Sensitivity High
    Operating Voltage (V) 2.5 to 3.6 V
    Average Supply Current (µA) 12 µA
    Min OperatingPoint ±Bop (Guass) 20
    Typ OperatingPoint ±Bop(Guass) 40
    Max OperatingPoint ±Bop(Guass) 60
    Min ReleasePoint ±Brp(Guass) 15
    Typ ReleasePoint ±Brp(Guass) 32
    Max ReleasePoint ±Brp(Guass) N/A
    Operating Ambient Temperature Range (°C) -40 to 85 °C

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    RoHS CofC

    Orderable Part Number Buy from Distributor / Contact Sales Request Samples


    Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
    Digi-Key Electronics 2536 9/17/2021 Europe, Asia, North America Buy Now
    Farnell, An Avnet Company 1295 9/17/2021 England Buy Now
    Farnell, An Avnet Company 1295 9/17/2021 England Buy Now
    Mouser Electronics Inc. 469 9/17/2021 South America, North America, Asia, Europe, Middle East Buy Now
    RS Components 1420 9/17/2021 England Buy Now
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    Product Change Notices

    PCN # Issue Date Implementation Date Subject
    PCN-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site