AD220-02E

Series:	AD
Packaging:	Tube
Part Status:	Active
Function:	Omnipolar Switch
Technology:	Hall Effect
Polarization:	Either
Sensing Range:	±3.4mT Trip, ±1.4mT Release
Test Condition:	-40°C ~ 125°C
Voltage - Supply:	4.5 V ~ 30 V
Current - Supply (Max):	4.5mA
Current - Output (Max):	20mA
Output Type:	Open Collector
Features:	--
Operating Temperature:	-40°C ~ 125°C (TA)
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC

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AD220-02E Solid State Magnetic Sensors and Switches

Solid state magnetic sensors and switches are electronic devices that detect the presence and/or position of a magnetic field. They are commonly used in robotics, industrial automation, and medical devices. One such device is the AD220-02E, which is a Hall-effect switching device made by Halltech. This device is composed of a CMOS (complementary metal–oxide–semiconductor) integrated circuit (IC) with a Hall-effect sensor and a control logic circuit.

Application Field

The AD220-02E is a versatile magnetic sensor and switch designed for both linear and rotary motion applications. The device can be used to sense a magnet’s position or proximity in man-made objects. Examples of man-made objects that may require magnetic sensing include electronic door locks, automatic pen holders, digital scales, position and angle sensors for industrial machinery, and automatic door handles for security systems. This device is also well suited for applications related to the automotive industry, such as providing feedback on wheel speed or the position of a throttle valve.

Working Principle

The AD220-02E works by sensing the presence of a magnetic field created by a nearby permanent magnet. The Hall-effect sensor integrated into the circuit detects the strength and direction of the magnetic field and sends a signal to the built-in logic circuit. The logic circuit then interprets the signal, compares it to the reference level, and issues either an ‘on’ or ‘off’ signal as output.The output of the AD220-02E is optically isolated, which means it is electrically isolated from the input electronics. This helps protect the input electronics from damage due to voltage spikes or electrical noise. The output signal can then be used to trigger other electronic circuits, such as triggering an emergency stop on a machine or activating a control relay.The sensitivity and accuracy of the AD220-02E can be adjusted using the internal amplifier, allowing the device to be set for a range of applications. The device’s operating temperature range is -40° C to +85° C (-40° F to +185° F) and can be used in a range of environments from automotive to industrial applications.

Conclusion

The AD220-02E is an invaluable solid state magnetic sensor and switch designed for both linear and rotary motion applications. The versatility and internal features of the device make it suitable for a large range of environments from automotive to industrial applications. It can detect the presence and/or position of a magnetic field in a man-made object and the output signal can be used to trigger other electronic circuits.

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