Micronas Hall-Effect Sensors for Industrial Applications (Part 5)

Micronas HAL506UA-A

Multipurpose Hall-Effect Sensor Family     

Package: TO92UA leaded

Ordering Code: HAL 506UA-A

Interface: 3-Wire

Switching Behavior: Unipolar, High Sensitivity

Temp. Range: -40°C to +170°C

Switching Points [mT] at 25°C: BON 5.5 - BOFF 3.5     

Micronas offers the world’s broadest range of Hall-effect sensors, which are increasingly being utilized in a variety of industrial applications, including factory and process automation; building, home, and office automation; medical applications; mobility and robotics controllers; agriculture and heavy machinery; garden and power tools; and household items such as washing machines, tumble dryers, induction cookers, and heating and cooling (HVAC) systems.      

The HAL 506 is 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 active offset compensation leads to magnetic characteristics which are robust against mechanical stress effects. In addition, the magnetic characteristics are constant in the full supply voltage and temperature range. The comparator compares the actual magnetic flux through the Hall plate (Hall voltage) with the fixed reference values (switching points). Based on the reading, the output transistor is switched on or off.      

The sensors are designed for industrial 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.
   

Major Applications

• 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

Block Diagram – System Architecture

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

Symmetry Electronics is an authorized Micronas distributor.