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Omnipolar Hall-Effect Digital Switches

Unlike other Hall-effect switches, these devices switch on with the presence of either a north or south magnetic field that has sufficient strength; in the absence of a magnetic field the output is off.

Omnipolar Hall-Effect Digital Switches

Part Number	Operate Point (G)	Release Point (G)	Hysteresis (G)	Supply Current (µA)	Operating Voltage (V)	Temperature Ranges	Packages	Features
A1171	±55	±6	Typ 6	Typ 3.5 (VDD = 1.8 V)	1.65 to 3.5	E	EW
A1172	±55	±6	Typ 6	Typ 3.5 (VDD = 1.8 V)	1.65 to 3.5	E	CG
A3211	±55	±10	Typ 7.7	10	2.5 to 3.5	E	EL, EH, LH	Inverted output; operates at approximately 0.1% duty cycle
A3212	±55	±10	Typ 7.7	10	2.5 to 3.5	E	EL, LH, LH	Operates at approximately 0.1% duty cycle
A3213	±70	±10	Typ 7.7	850	2.4 to 5.5	E, L	LH, UA
A3214	±70	±10	Typ 7.7	22	2.4 to 5.5	E, L	LH, UA	Operates at approximately 0.1% duty cycle
A3245	±55	±10	Typ 15	3500	3.6 to 24	E, L	LH, UA	Integrated voltage regulator

• Applications Information: A Micropower, Ultrasensitive Hall-Effect Switch With Dual Pole Operation

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