Programmable Linear Hall Sensors 81x

The HAL 810 and HAL 815 are programmable linear Hall
sensors which can be used for angle or distance measurements.
The major characteristics are programmable in a non-volatile
memory.
The HAL 815 has a ratiometric output characteristic; its output
voltage is proportional to the magnetic flux and the supply
voltage. The HAL 810 provides a pulse-width modulated (PWM)
output signal.
The sensors feature a temperature-compensated Hall plate with
choppered offset compensation, an A/D converter, an EEPROM
memory with redundancy and lock function for the calibration
data and protection devices at all pins. Due to the digital signal
processing, analog offsets, temperature shifts, and mechanical
stress do not degrade the sensor accuracy.
The tolerances of the sensor, the magnet and the mechanical
positioning can be compensated via programming by customer/
user in the final assembly. This offers a low-cost alternative for all
applications that presently need mechanical adjustment or laser
trimming for calibration.
Both sensors are available in the very small leaded packages
TO92UT-1 and TO92UT-2.