ABL004-00

Series:	ABL
Packaging:	Tube
Part Status:	Obsolete
Function:	Special Purpose
Technology:	Magnetoresistive
Polarization:	--
Sensing Range:	--
Test Condition:	--
Voltage - Supply:	4.5 V ~ 36 V
Current - Supply (Max):	9mA
Current - Output (Max):	16mA
Output Type:	Analog Voltage
Features:	--
Operating Temperature:	-40°C ~ 150°C (TA)
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package:	8-MSOP

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Introduction

Magnetic sensors are utilized in applications that have the ability to detect the presence of a magnetic field. Magnetic sensors are typically used in robotic systems, industrial automation, automotive, medical, and more. In particular, this report will explore the ABL004-00, a Magnetic Sensor - Switch (Solid State) designed by Allegro MicroSystems Corp. Focus will be placed on the particular application field and the operating principle of this product.

Application Field

The ABL004-00 features an open collector output to control a circuit based on the presence of a nearby magnetic field. Its low power consumption makes it suitable for mobile devices, battery powered applications, and applications where environment and safety is taken into consideration. The ABL004-00 can be utilized in a wide range of applications such as motor control, factory automation, home appliances, gaming peripherals, burglar alarms, mechanized consumer goods, etc.

Working Principle

The ABL004-00 utilizes a Hall effect principle which uses a transducer that produces an output voltage proportional to the magnetic field present. This transducer is able to detect the presence of a magnetic field in the area of an internal magnetic sensor. The magnetic sensor includes several small aluminum Hall elements, located in between four electrodes. The Hall elements are activated when exposed to a magnetic field. When the magnetic flux density of a field exceeds the switching threshold of 1.5mT, the Hall element will induce a current which will be output through the device’s output pin, tri-state output pin, and ground pin.

Conclusion

The ABL004-00 is a Magnetic Sensor - Switch (Solid State), designed by Allegro MicroSystems Corp. It is useful in a range of applications such as motor control, factory automation, home appliances, gaming peripherals, burglar alarms, mechanized consumer goods, etc. It features an open collector output to control a circuit based on the presence of a nearby magnetic field and utilizes a Hall effect principle which produces an output voltage proportional to the magnetic field present.

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