HAL548UA-K

Series:	HAL®
Packaging:	Tape & Box (TB)
Part Status:	Obsolete
Function:	Unipolar Switch
Technology:	Hall Effect
Polarization:	South Pole
Sensing Range:	24mT Trip, 6mT Release
Test Condition:	25°C
Voltage - Supply:	4.3 V ~ 24 V
Current - Supply (Max):	4.2mA
Current - Output (Max):	20mA
Output Type:	Open Drain
Features:	Temperature Compensated
Operating Temperature:	-40°C ~ 140°C (TA)
Package / Case:	TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)
Supplier Device Package:	TO-92UA-1

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Magnetic Sensors - Switches (Solid State)

The HAL548UA-K is a multipurpose, solid-state magnetic sensing switch designed to detect the presence of an AC or DC magnetic field. It is composed of a low power Hall-effect integrated circuit (IC) and a special enclosed miniature coil transformer that detects rare earth and ferrite types of magnets.The HAL548UA-K is an excellent choice for sensing the presence of ferrite and rare earth magnets. It provides superior sensing results and functionality, even in electrically noisy environments. The advanced sensing capabilities of the HAL548UA-K include excellent sensitivity to even the weakest of magnetic field strengths. Additionally, the HAL548UA-K features a low power consumption level of only 0.8mb and an output current of 1.2mA to quantify detected magnetic fields.The HAL548UA-K applies a wide array of applications and can be used in instances such as proximity sensing, positioning, and speed measurements. It is ideal for automotive, industrial, and consumer applications in which it can be used to measure the position, direction, and speed of a magnet or the presence of a magnet in the vicinity. This can be used to sense the passing or opening/closing of a door, window, or valve. It can also be used for applications such as accurate speed measurements, processing, and monitoring of rotating machines, conveyors, and materials.In terms of working principle, the HAL548UA-K utilizes a Hall effect sensor that’s built into the NIC. Its enclosed coil transformer converts the magnetic field into an electrical signal, which is then converted into a digital output. When the magnetic field increases or decreases, it impacts the Hall effect sensor on the chip, resulting in a digital output inside the IC. The frequency of the pulses generated by the coil are proportional to the magnitude of the magnetic field detected. The resulting digital output is then available through a digital output pin.The HAL548UA-K is an excellent tool for sensing a wide array of magnetic fields and is designed to be robust and stable even in electrically noisy environments. It is extremely power-efficient and can provide reliable and accurate measurements of magnetic fields. Additionally, its small form factor makes it well suited for applications in the automotive, industrial, and other consumer applications.

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