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AH1887

Dual Output Pole Dependent Unipolar Hall Switch

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Description

AH1887 is with two Hall effect plates and dual CMOS output driver, mainly designed for battery–powered, hand-held equipment (such as Cellular and Cordless Phone, PDA). The total operation power is down to 15uW in the 1.8V supply. Either north or south pole of sufficient strength will turn the output on. The output will be turned off under no magnetic field. While the magnetic flux density (B) is larger than operate point Bop(s), the output1 will be turned on (low), the output is held until B is lower than release point Brp(s), then turned off(high). While the magnetic flux density (B) is larger than operate point Bop(n), the output2 will be turned on (low), the output is held until B is lower than release point Brp(n), then turned off(high).

Application(s)

  • Cellular phone
  • PDA
  • Cordless phone
  • Product Specifications

    Product Parameters

    Compliance(Only Automotive supports PPAP) Standard
    AEC Qualified No
    Type Unipolar
    Outputs Dual Pole Dependent
    Output Type Push-Pull
    Active Output State (B > Bop) Low
    Inactive Output State (B < Brp) High
    Operating Voltage (V) 1.65 to 3.3
    Average Supply Current (mA) 0.007
    Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 35
    Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 50
    Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 6
    Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 20
    Operating Ambient Temperature (°C) -40 to 85

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    Recommended Soldering Techniques

    TN1.pdf

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