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AH1812

High Sensitivity Micropower Omnipolar Hall Effect Switch

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Description

The AH1812 is a high sensitivity micropower Omnipolar Hall effect switch IC with open drain for pull up flexibility. Designed for portable and battery powered equipment such as cellular phones and portable PCs, the average supply current is only 4.3µA at 1.85V. To support portable equipment the AH1812 can operate over the supply range of 1.6V to 3.6V and uses a hibernating clocking system to minimize the power consumption. To minimize PCB space the AH1812 is available in small low profile packages. The single opend drain output is activated with either a north or south pole of sufficient magnetic field strength. When the magnetic flux density (B) perpendicular to the package is larger than operate point (Bop), the output will be turned on (pulled low) and held until B is lower than release point (Brp). The output will remain off when there is no magnetic field. The AH1812 is available in a small low profile X1-DFN1216-4 package.

Application(s)

  • Cover or Display Switch in Low Profile Portable PCs (eg Ultrabooks)
  • Open and Close Detect for Flip/Slide Cellular Phones
  • Holster or Cover Detect for Cellular Phones and Tablet PCs
  • Digital Still, Video Cameras and Handheld Gaming Consoles
  • Contactless switch
  • Product Specifications

    Product Parameters

    Compliance (Only Automotive supports PPAP) Standard
    Qualified to AEC-Q10x No
    # Outputs 1
    Output Type Open Drain
    ActiveHigh orLow Low
    Sensitivity High
    Operating Voltage (V) 1.6 to 3.6 V
    Average Supply Current (µA) 4.3 µA
    Min OperatingPoint ±Bop (Guass) 16
    Typ OperatingPoint ±Bop(Guass) 30
    Max OperatingPoint ±Bop(Guass) 40
    Min ReleasePoint ±Brp(Guass) 11
    Typ ReleasePoint ±Brp(Guass) 20
    Max ReleasePoint ±Brp(Guass) 35
    Operating Ambient Temperature Range (°C) -40 to 85 °C

    Related Content

    Packages

    Technical Documents

    Recommended Soldering Techniques

    TN1.pdf

    RoHS CofC

    Orderable Part Number Buy from Distributor / Contact Sales Request Samples
    AH1812-FA-7

    AH1812-FA-7

    Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
    Digi-Key Electronics 1143 9/17/2021 Europe, Asia, North America Buy Now
    Farnell, An Avnet Company 2865 9/17/2021 England Buy Now
    Farnell, An Avnet Company 2865 9/17/2021 England Buy Now
    Mouser Electronics Inc. 2315 9/17/2021 South America, North America, Asia, Europe, Middle East Buy Now
    Request Sample

    PCNs

    Product Change Notices

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