Unipolar Hall IC

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Unipolar Hall Sensor AH443

◆ Features

Rated working voltage 4.5 V ~ 24 V, the limit voltages as low as 3.5 V;

Operating temperature range: -40℃ ~ 150℃;

Rated output current(sink) : 25 mA, the maximum output current(sink): 50 mA;

Switch response time is about 1μs, the operating frequency DC ~ 100 kHz;

Small temperature drift between operating point and release point;

There are variety of packages and out packing options;

No mechanical contact, no spark, switch signal stability, no shaking moment, high reliability and safety;

Products meet the EU RoHS instruction 2011/65 / EU and REACH regulations 1907/2006 / EU requirements.

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PRODUCTS DETAILS

◆ Outline

When the “S” pole of magnet faces the mark surface of the sensor and is closed to sensor （B≥Bop），the sensor outputs low level; When magnet is far away from sensor（B≤ BRP）， the sensor outputs high level. When the “N” pole faces the mark surface，the sensor is no response. Stable Hyteresis(（BH= |BOP- BRP|）ensure the Stable sensor’s switch status. The magnet and electric transfer characteristic curve is shown as the figure:

单极型霍尔传感器AH443

◆ Block Diagram

Hall sensor AH443 is one of unipolar excitation single-ended digital output Hall IC. The sensor chip has built-in reverse voltage protection, voltage regulators, temperature compensation circuit, Hall-voltage generator, signal amplifier, Schmitt trigger and open collector output driver circuit unit. Excellent voltage regulator and temperature compensation circuit ensure the sensor stable operates over a wide voltage range and temperature range, and the reverse voltage protection circuit avoids the sensor to be damaged by reverse voltage.

◆ Limit Parameter

Parameter	symbol	Min.	Max.	Unit
Storage Temp.	Ts	-55	175	℃
Supply Voltage	VCC	3.5	28	V
Output Cut-off Voltage	VO（off）	—	25	V
Magnetic Induction	B	unlimited	unlimited	mT
Output Current	IO	—	50	mA

◆ Electrostatic Grade

Under human being mode, the Electrostatic compression is large than ±6kV.

◆ Operating Condition

Parameter	Symbol	Min.	Max.	Unit
Supply Voltage	VCC	4.5	24	V
Operating Temp.	Ta	-40	150	℃
Output Current	IO	—	5	mA

◆ Electrical Characteristc

Paramater	Symbol	Test Condition	Typ.	Max	Unit
Output Low Level	VOL	VCC1=4.5， VCC2=24V， IO=25mA，B≥BOP	0.2	0.4	V
Output High Level	VOH	VCC1=4.5， VCC2=24V， IO=25mA，B≤BRP	23.5	24	V
Output Leakage Current	IOH	VCC2=24V，VCC1 Open Circuit	0.1	10	μA
Supply Current	ICC	VCC1=24V，Vo Open Circuit	3.5	8	mA
Output Rise Edge Time	tR	VCC1=VCC2=12V， RL=1.2kΩ， CL=20pF	125	150	ns
Output Fall Edge Time	tF	VCC1=VCC2=12V， RL=1.2kΩ， CL=20pF	60	80	ns

◆ Magnetic Characteristic

Test Condition：VCC1 = VCC2 =24V，IO = 50mA

Parameter	Symbol	Min.	Typ.	Max.
Operate Point	BOP	—	—	25
Release Point	BRP	3	—	—
Hysteresis ∣Operate point-Release point∣	BH ∣BOP-BRP∣	2	—	6

Note 1: Unit is mT, 1mT=10Gs.

Note 2: When the “S”Pole of the magnetic field is vertical to the front mark of product, we call the magnetic field B＞0.

◆ Package Ourline

SOT23-3L（M type）package figure（Unit: mm）

单极型霍尔传感器AH443

SOT89-3L（S type）package figure（Unit: mm）

单极型霍尔传感器AH443

TO-92UA/TO-92S（UA type）package figure（Unit: mm）

单极型霍尔传感器AH443

Note: In the above package outline figure, Pin 1: Vcc, Pin2: GND, Pin 3: Output terminal.

Mark

Mark “XX” or “AHXX” are abbreviation form of the parts No., the second line”XXXX”means product lot No.

Hall Effect Sensor Manufacturer-Nanjing AH Electronic Science & Technology Co., Ltd.

Unipolar Hall Sensor AH443