Micronas HAL 5xy Multipurpose Hall-Effect Sensor Family Product Information

Short description

The HAL 5xy family consists of different Hall switches produced in CMOS technology. All sensors include a temperature-compensated Hall plate with active offset compensation, a comparator, and an open-drain output transistor. The comparator compares the actual magnetic flux through the Hall plate (Hall voltage) with the fixed reference values (switching points). Accordingly, the output transistor is switched on or off.

The sensors of this family differ in the switching behavior and the switching points.The active offset compensation leads to constant magnetic characteristics over supply voltage and temperature range. In addition, the magnetic parameters are robust against mechanical stress effects.The sensors are designed for industrial and automotive applications and operate with supply voltages from 3.8 V to 24 V in the ambient temperature range from –40 °C up to 150 °C.All sensors are available in the SMD-package SOT89B-1 and in the leaded versions TO92UA-1 and TO92UA-2.

Block diagram

System Architecture

The HAL 5xy sensors are monolithic integrated circuits which switch in response to magnetic fields. If a magnetic field with flux lines perpendicular to the sensitive area is applied to the sensor, the biased Hall plate forces a Hall voltage proportional to this field. The Hall voltage is compared with the actual threshold level in the comparator.

The temperature-dependent bias increases the supply voltage of the Hall plates and adjusts the switching points to the decreasing induction of magnets at higher temperatures. If the magnetic field exceeds the threshold levels, the open drain output switches to the appropriate state. The built-in hysteresis eliminates oscillation and provides switching behavior of the output without bouncing.

Block diagram of the HAL 5xy

Features

Main Features

Switching offset compensation at typically 62 kHz
Operates from 3.8 V to 24 V supply voltage
Overvoltage protection at all pins
Reverse-voltage protection at VDD-pin
Magnetic characteristics are robust regarding mechanical stress effects
Short-circuit protected open-drain output by thermal shut down
Operates with static magnetic fields and dynamic magnetic fields up to 10 kHz
Constant switching points over a wide supply voltage range
The decrease of magnetic flux density caused by rising temperature in the sensor system is compensated by a built-in negative temperature coefficient of the magnetic characteristics
Ideal sensor for applications in extreme automotive and industrial environments
EMC corresponding to ISO 7637
Operates from −40 °C to 170 °C junction temperature

Major Applications

The HAL 5xy is the optimal system solution for applications, such as:

Endposition detection
RPM measurement of motors in various applications, such as power window
Brushless DC motors
RPM measurements in flow meters
Replacement of micro switches

Family members

Available Types and Switching Behavior

Features

HAL 501

HAL 502

HAL 503

HAL 504

HAL 505

HAL 506

HAL 508

HAL 509

HAL 516

HAL 519

HAL 523

Switching Behavior

bipolar

latching

unipolar

latching

unipolar

unipolar with inverted output

unipolar with inverted output (north polarity)

unipolar

Sensitivity

very high

high

medium

low

high

medium

low

high

low

Selection Guide and Online Ordering

Product type
Product name
Properties
Programmable	B on [mT]	B off [mT]
Temperature Range	Type	Application
Package	Configuration

Product

Package

Temp. Range

Order Code

Ordering

HAL 501

TO-92UA

-40°C - 170°C

HAL 501UA-A

HAL 501

SOT-89B

-40°C - 170°C

HAL 501SF-A

HAL 501

TO-92UA

-40°C - 140°C

HAL 501UA-K

HAL 501

SOT-89B

-40°C - 140°C

HAL 501SF-K

HAL 502

SOT-89B

-40°C - 170°C

HAL 502SF-A

HAL 502

SOT-89B

-40°C - 140°C

HAL 502SF-K

HAL 502

TO-92UA

-40°C - 170°C

HAL 502UA-A

HAL 502

TO-92UA

-40°C - 140°C

HAL 502UA-K

HAL 503

SOT-89B

-40°C - 170°C

HAL 503SF-A

HAL 503

TO-92UA

-40°C - 140°C

HAL 503UA-K