Diodes Incorporated
Back to Hall Effect Latches and Switches


Micropower Omnipolar Hall-Effect Sensor Switch

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


AH180 is comprised of two Hall effect plates and an open-drain output driver, mainly designed for battery-operation, hand-held equipment (such as Cellular and Cordless Phone, PDA). The total power consumption in normal operation is typically 24µW with a 3V power source. 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 operating point (Bop), the output will be turned on (low), the output is held until B is lower than release point (Brp), then turned off.


  • Cover switch in clam-shell cellular phones
  • Cover switch in Notebook PC/PDA
  • Contact-less switch in consumer products

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
AEC Qualified No
Type Omnipolar
Outputs Single
Output Type Open Drain
Active Output State (B > Bop) Low
Inactive Output State (B < Brp) High-Z
Operating Voltage (V) 2.5 to 5.5
Average Supply Current (mA) 0.008
Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 40
Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 60
Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 10
Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 30
Operating Ambient Temperature (°C) -40 to 85

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-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site
PCN-2310 2018-01-24 2018-01-24 Device End of Life (EOL)