Programmable Hall Switch HAL 1000

The HAL 1000 is a programmable Hall switch. The major
sensor characteristics, the two switching points B-on and B-off
and the output behavior are programmable for the specific
application.
The HAL 1000 features a temperature-compensated Hall plate
with choppered offset compensation, an A/D converter, digital
signal processing, a push-pull output stage, an EEPROM memory
with redundancy and lock function for the calibration data,
serial interface for programming the EEPROM and protection
devices at all pins. Due to the digital signal processing, analog
offsets, temperature shifts, and mechanical stress effects do not
degrade the sensor accuracy.
The HAL 1000 is programmable by modulating the supply
voltage. No additional programming pin is needed. The
tolerances of the sensors, the magnet, and the mechanical
positioning can be compensated via programming for the final
assembly. This offers a low-cost alternative for all applications
that presently require mechanical adjustment. The sensor is
designed for the use in harsh industrial and automotive
applications with nominal supply voltage of 5V in the junction
temperature range from -40°C up to +170°C. The HAL 1000
available in the leaded package TO92UT.

Features

» High-precision Hall switch with programmable switching points

and switching behavior

» Switching points programmable from -150 mT up to 150 mT

in steps of 0.5 % of the magnetic field range

» Operates with static magnetic fields and dynamic magnetic

fields up to 2 kHz

» Multiple programmable magnetic characteristics in a nonvolatile

memory (EEPROM ) with redundancy and lock function

» Temperature characteristics programmable to match all

common magnetic materials

» Programmable by modulation of the supply voltage