AH1887

Dual Output Pole Dependent Unipolar Hall Switch

Datasheet

Evaluation Boards and User Guides

HALLSENSOREV1-User-Guide.pdf (679 KB)

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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