AH1897-FA-7

Series:	--
Packaging:	Cut Tape (CT)
Part Status:	Discontinued at Digi-Key
Function:	Omnipolar Switch
Technology:	Hall Effect
Polarization:	Either
Sensing Range:	±4mT Trip, ±3.5mT Release
Test Condition:	25°C
Voltage - Supply:	1.6 V ~ 3.6 V
Current - Supply (Max):	13µA
Current - Output (Max):	3mA
Output Type:	Push-Pull
Features:	--
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	4-XDFN Exposed Pad
Supplier Device Package:	4-DFN-EP (1.2x1.6)

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AH1897-FA-7

Magnetic Sensors - Switches (Solid State)

AH1897-FA-7 is a magnetic sensor switch that belongs to the Magnetic Sensors - Switches (Solid State) category. It is a pressure sensitive switch mainly designed for contactless control and signals measurement in various environments. This magnetic switch operates without the need of power supply and makes use of a reed switch to respond to magnetic field changes in order to provide digital and/or analog output.

Application Field

AH1897-FA-7 provides excellent sensitivity, stability and reliability that make it suitable for a wide variety of applications.The main areas of application for this switch include security and safety systems, robots, industrial machines, control and measurement systems and general industrial applications. This type of switch is often used in alarm systems, surveillance systems, automotive systems, medical equipment, home control systems, street lighting, entry control and HVAC systems.

Working Principle

The AH1897-FA-7 works on a principle called contactless control. This type of control involves measuring changes in a magnetic field to detect the presence or absence of an object.The switch contains a reed switch that is connected to a microcontroller. The microcontroller is responsible for sensing changes in the magnetic field and sending signals to the output. The output can be either digital or analog depending on the application.When a magnetic field close to the switch is present, the reed switch is activated. This causes the microcontroller to send a signal to the output, activating any connected devices. When the magnetic field is removed, the switch is deactivated and the signal is no longer sent to the output, deactivating the connected devices.

Advantages

The AH1897-FA-7 offers several advantages over other types of switches.The major advantage this switch offers is that it can detect very small changes in a magnetic field. This makes it ideal for applications where precise measurements of changes in the magnetic field are required.Furthermore, the switch is also very reliable and durable due to its contactless design. This makes it suitable for a variety of applications and ensures that it will last for a long time.Finally, the switch is also very easy to install and use, requiring minimal setup and maintenance.

Conclusion

In conclusion, the AH1897-FA-7 is a reliable and easy to use magnetic sensor switch that can be used in a variety of applications. Its main advantages include its ability to detect very small changes in the magnetic field, reliability and durability, and ease of setup and use. This makes it an excellent choice for any application that requires contactless control or signals measurement.

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