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AH1895

Micropower Omnipolar Hall Effect Switch

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Description

The AH1895 is a medium sensitivity micropower Omnipolar Hall effect switch IC with internal pull up and pull down capability. Designed for portable and battery powered equipment such as cellular phones and portable PCs to home appliances and industrial applications, the average supply current is only 4.3uA at 1.85V. To support portable equipment the AH1895 can operate over the supply range of 1.6V to 3.6V and uses a hibernating clocking system to minimize the power consumption. Based on chopper stabilized architecture the AH1895 provides a reliable solution over the whole operating range. To minimize PCB space the AH1895 is available in small low profile packages . The single 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 (pul°C low) and held until B is lower than release point (Brp). The output will remain off when there is no magnetic field. The AH1895 is available in a small low profile X1-DFN1216-4 and leaded SOT553 packages

Application(s)

  • Holster or Cover Detect for Cellular Phones and Tablets PCs
  • Open and Close Detect for Fflip/Slide Cellular Phones
  • Cover or Display Switch in Low Profile Portable PCs (eg Ultrabooks)
  • Digital Still, Video Cameras and Handheld Gaming Consoles
  • Door, Lids and Tray Position Switches
  • Level, Proximity and Position Switches
  • Contact-Less Switches in Home Appliances and Industrial Applications
  • 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
    Operating Voltage (V) 1.6 to 3.6
    Average Supply Current (mA) 0.0043
    Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 40
    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) 65
    Operating Ambient Temperature (°C) -40 to 85

    Related Content

    Packages

    Technical Documents

    Recommended Soldering Techniques

    TN1.pdf

    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-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site