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Introduction, characteristics, and applications of AH1899 micropower omnipolar Hall effect switch

2/16/2024 9:15:57 AM

Abstract: Low power consumption and high sensitivity integrated circuit design for portable devices such as mobile phones and laptops.

AH1899 DIODES

The AH1899 micropower omnipolar Hall effect switch is a high-sensitivity, low-power integrated circuit designed for portable devices such as mobile phones and notebook computers. The AH1899A and AH1899B diodes have an average supply current of 0.95µa at 1.2V and 1.1µa at 1.8V. The average supply current of the AH1899S is only 5.1µA at 1.2V and 5.8µA at 1.8V. The device operates from 1.1V to 2.0V and utilizes a sleep clock system to reduce power consumption. The compact X2-DFN1010-4 (Type B) package minimizes PCB space.


characteristic

  • Omnipolar operation (Arctic or Antarctic)

  • Power supply voltage 1.1V ~ 2.0V

  • micropower operation

  • Chopper stable design provides

    • Excellent temperature stability

    • Minimum switch point drift

    • Increase immunity to physical stress

  • No external pull-up resistor required

  • Good RF immunity

  • -40℃~ +85℃ working temperature

  • Small low profile X2-DFN1010-4 (Type B) package

  • Completely lead-free and fully compliant with RoHS standards

  • Halogen-free, antimony-free, green equipment


app

  • Cover or display switch for portable personal computer

  • Mobile phone opening and closing detection

  • Holster or case detection for mobile phones and tablets

  • Digital cameras, camcorders, handheld game consoles

  • Non-contact switch


block diagram


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