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AH1801 (Not Recommended for new design)

NRND = Not Recommended for New Design

Inverted-Output High Sensitivity Micropower Omnipolar Hall Effect Switch

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AH1801 is a Micropower, Ultra-sensitive Hall Effect Switch, which is with two Hall effect plates and a output driver, mainly designed for battery–operation, hand-held equipment (such as Cellular and Cordless Phone, PDA). The total operation power is down to 24uW in the 3V supply. Either north or south pole of sufficient strength will turn the output off. The output will be turned on under no magnetic field. While the magnetic flux density (B) is larger than operate point (Bop), the output will be turned off, the output is held until B is lower than release point (Brp), then turned on.


  • Cellular phone
  • PDA
  • Cordless phone

Product Specifications

Product Parameters

# Outputs 1
ActiveHigh orLow High
Compliance (Only Automotive supports PPAP) No
Average Supply Current (µA) 8
Max OperatingPoint ±Bop(Guass) 60
Max ReleasePoint ±Brp(Guass) N/A
Min OperatingPoint ±Bop (Guass) N/A
Min ReleasePoint ±Brp(Guass) 10
Operating Ambient Temperature Range (°C) -40 to 85
Operating Voltage (V) 2.5 to 5.5
Output Type Open Drain
AEC Qualified No
Sensitivity High
Typ OperatingPoint ±Bop(Guass) 40
Typ ReleasePoint ±Brp(Guass) 30

Related Content


Technical Documents

Recommended Soldering Techniques



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-2310 2018-01-24 2018-01-24 Device End of Life (EOL)