AD404-02E

Series:	AD
Packaging:	Tube
Part Status:	Active
Function:	Omnipolar Switch
Technology:	Hall Effect
Polarization:	Either
Sensing Range:	±2.5mT Trip, ±1.1mT 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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Magnetic Sensor-Switches (Solid State) have been used in the industry for decades and are very common in many different applications. AD404-02E is a particular sensor from Eaton Corporation that is specifically designed for industrial and commercial applications. This article will discuss the application fields and working principle of AD404-02E.AD404-02E is a solid-state sensor switch designed to detect the presence of magnetic fields. It is can be used to sense the presence of metal objects, as well as other magnetic materials. It is primarily used in industrial and commercial applications, such as sensing the position of doors and windows, monitoring security systems, and controlling machine operations. The device can be used in many other applications and can be configured for different requirements. It is suitable for use in a wide range of temperatures, from -40°C to +85°C.The AD404-02E is composed of four main components: an activating element, a fixed magnet, a Hall Element, and a Schmitt trigger circuit. The activating element is a ferromagnetic material that passes a magnetic field through a gap in the center of the switch. The fixed magnet is positioned on the opposite side of the switch, and a Hall Element is placed between the activating element and the fixed magnet. The Hall Element detects the magnetic field and produces an electrical signal. This signal is then used to activate the Schmitt trigger circuit, which is connected to a circuit output. When the activating element and fixed magnet are in close proximity, the Hall Element will detect a change in the magnetic field. This change is detected by the Schmitt trigger circuit, which then sends an electrical signal to the circuit output. The output of the circuit is either an open signal or a closed signal. An open signal indicates that an object is located between the activating element and the fixed magnet, while a closed signal indicates that the space between the two is empty.The AD404-02E is highly user-friendly and can be easily integrated into existing systems. It is also compatible with a variety of different relay controllers. In addition, the device has a long service life, and its feedback can be used to accurately monitor the status of equipment. In conclusion, the AD404-02E is an effective and reliable magnetic sensor switch for industrial and commercial applications. It can detect the presence of magnetic fields and send a signal to the circuit output, indicating whether the gap between the activating element and the fixed magnet is occupied or not. The solid state design makes this sensor robust and flexible, and its compatibility with many different relay controllers makes it a versatile device.

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