Diodes Incorporated
Back to Hall Effect Latches and Switches


Micropower Selectable threshold Omnipolar Hall Effect Switch

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


The AH1892 is a micropower magnetic range selectable (Bop/Brp) Omnipolar Hall effect switch IC with internal pull up and pull down capability, designed for consumer equipment ranging from portable and battery powered cellular phones and portable PCs to home appliances and industrial applications. To support battery powered equipment and low voltage microcontrollers, the AH1892 can operate over the supply range of 1.6V to 3.6V and uses a hibernating clocking system to minimize the power consumption. The average supply current is only 4.3?A typical at 1.8V. Based on chopper stabilized architecture and ESD of 8kV on supply and output pins, the AH1892 provides reliable and robust solutions over the whole operating range. To minimize PCB space the AH1892 is packaged in the small and low profile U-WLB0707-4 (CSP 0.71mm x 0.71mm typical) or SOT553 leaded package The output is activated with either a north or south pole of sufficient magnetic field strength. The user can select one of two magnetic sensitivity bands via the BSEL pin without the addition of any external components allowing a flexible but small solution. The band select can be hardwired or be changed on the fly via a logic source such as a micro-controller. 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).


• Open and close detect for cellular phones
  • Holster detect for cellular phones and Smart phones
  • Cover switch in portable PCs - Tablets and Notebooks
  • Camcorders and still cameras
  • Contact-less switch in consumer battery power products
  • Proximity, position, level and dial switch position detection
  • Product Specifications

    Product Parameters

    Compliance(Only Automotive supports PPAP) Standard
    AEC Qualified No
    Type Omnipolar
    Outputs Single
    Output Type Push-Pull
    Active Output State (B > Bop) Low
    Inactive Output State (B < Brp) High
    Key Feature Selectable Sensitivity
    Operating Voltage (V) 1.6 to 3.6
    Average Supply Current (mA) 0.0043
    Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 43
    Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 60
    Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 80
    Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 35
    Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 50
    Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 70
    Operating Ambient Temperature (°C) -40 to 85

    Related Content


    Technical Documents

    Recommended Soldering Techniques


    RoHS CofC

    Product Change Notices (PCNs)

    A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

    PCN # Issue Date Implementation Date Subject
    PCN-2611 2023-04-03 2023-07-03 Qualified Additional Assembly Test Sites, Die Revision and Tape and Reel Packing Quantity.
    PCN-2507 2021-02-03 2021-05-03 Qualification of Additional Wafer Backside Material Supplier