Latch Type Hall Sensor AH512

◆ Features

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

Operating temperature range: -55℃ ~ 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;

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 “N” pole of magnet is face to sensor’s mark surface and clsed to the sensor（B≤ BRP）， the sensor outputs high level. When the magnet is far from sensor, (B=0) , the output status is latched and keep constant, in order to change the output status, the reverse polarity magnetic field must be applied on it.

The magnet and electric transfer characteristic curve of AH512 is shown as the figure:

◆ Block Diagram

AH512(1).jpg

Hall sensor AH512 is one of bipolar excitation single-ended digital output Hall IC. The output signal owns latch function. The sensor chip has built-in reverse voltage protection, voltage regulators, temperature compensation circuit, Hall-voltage generator, signal amplifier, Schmitt trigger, built-in pull-up resistor, and open collector output driver circuit unit etc. 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	Simbol	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	-55	150	℃
Output Current	IO	—	8	mA

◆ Electrical Characteristic

Parameter	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