Pin Configuration

No:	Pin Name	Description
1	+5V (Vcc)	Used to power the hall sensor, typically +5V is used
2	Ground	Connect to the ground of the circuit
3	Output	This pin goes high, if magnet detected. Output voltage is equal to Operating voltage.

 

Hall-effect sensor Specifications

• Digital Output Hall-effect sensor
• Operating voltage: 4.5V to 28V (typically 5V)
• Output Current: 25mA
• Can be used to detect both the poles of a magnet
• Output voltage is equal to operating voltage
• Operating temperature: -40°C to 85°C
• Turn on and Turn off time is 2uS each
• Inbuilt reverse polarity protection
• Suitable for Automotive and Industrial Applications

Where to use hall-effect sensor

A hall-effect sensor as the name suggests works with the principle of hall-effect and is used to detect magnets. Each side of the sensor can detect one particular pole. It can also be easily interfaced with a microcontroller since it works on transistor logic.

So if you are looking for a sensor to detect magnet for measuring speed of a moving object or just to detect objects then this sensor might be the perfect choice for your project.

How to use Hall-effect sensor

There are two main types of hall-effect sensor, one which gives an analog output and the other which gives a digital output. A3144 is a digital output hall sensor, meaning if it detects a magnet the output will go low else the output will remain high. It is also mandatory to use a pull-up resistor as shown below to keep the output high when no magnet is detected.

In the above circuit diagram the resistor R1 (10K) is used as a pull-up resistor and the capacitor C1 (0.1uF) is used to filter any noise that might be coupled with the digital output.

 

Applications

• Used to detect magnets(objects) in automation systems
• Used in magnetic door alarm system
• Measure speed in automobiles
• Detect the pole of magnets in BLDC motors

 

2D Model of A3144 (Through hole)

FAQs about A3144 Magnetic Hall-effect Sensor:

1. Q: What is a A3144 Magnetic Hall-effect Sensor, and how does it work? A: The A3144 Magnetic Hall-effect Sensor is a solid-state sensor that detects the presence of magnetic fields. It operates based on the Hall effect principle, where the output voltage of the sensor changes in response to changes in the magnetic field surrounding it.

2. Q: What are the typical applications of the A3144 Magnetic Hall-effect Sensor? A: The A3144 sensor is commonly used in various applications, including position sensing, speed detection, and proximity sensing. It can be found in automotive systems, industrial equipment, security systems, and consumer electronics.

3. Q: What is the input voltage range and current consumption of the A3144 sensor? A: The A3144 sensor has a standard input voltage of 5V, with an input voltage range of 4.5V to 28V. It consumes approximately 25mA of current during operation, making it suitable for low-power applications.

4. Q: What is the operating temperature range of the A3144 sensor? A: The A3144 sensor is designed to operate within a wide temperature range, from -40°C to 85°C. This temperature tolerance makes it suitable for use in harsh environmental conditions and extreme temperatures.

5. Q: What are the turn-on and turn-off times of the A3144 sensor, and what is the magnetic flux density it can handle? A: The A3144 sensor has fast turn-on and turn-off times of 2µsec each, ensuring rapid response to changes in the magnetic field. It is capable of handling unlimited magnetic flux density, making it suitable for detecting a wide range of magnetic strengths.'

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