HAL 1xy
Hall switch family for home appliances and industrial applications
Manufacturer: Micronas

The Hall-effect sensor is a monolithic integrated circuit that switches 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 is used to compensate 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 output without bouncing.
Magnetic offset caused by mechanical stress is compensated for by using the “switching offset compensation technique”.

Block Diagram - System Architecture
Major Applications
- White goods - selector switches
- White goods - door lock detection
- White goods - RPM detection
- Power tools - speed control
- Power tools - direction switch
- Home automation - garage openers
- Home automation - door openers
- Industrial - Endposition detection
- Industrial - RPM measurement of motors
- Industrial - Brushless DC motors
- Industrial - RPM measurements in flow meters
- Industrial - Replacement of micro switches
Features
- Temperature ranges: C (Commercial, TJ = 0 °C to 85 °C) I (Industrial, TJ = –20 °C to 125 °C)
- Operates from 3.8 V to 24 V supply voltage
- Operates with static magnetic fields and dynamic magnetic fields up to 10 kHz
- Overvoltage protection at all pins
- Reverse-voltage protection at VDD pin
- Magnetic characteristics are robust against mechanical stress effects
- Short-circuit protected open-drain output by thermal shut down
- Constant switching points over a wide supply voltage and temperature range
- The decrease of magnetic flux density caused by rising temperature in the sen- sor system is compensated by a built-in negative temperature coefficient of the magnetic characteristics
- High temperature stability for home appliances and industrial applications
- High ESD rating