The HAL 85x complement the existing Halleffect sensor family HAL 8xx. Both universal magnetic field sensors provide an arbitrary output signal. The sensors are produced in submicron CMOS technology.

Features
◆ High-precision linear Hall effect sensors with different output formats
◆ Various programmable magnetic characteristics with non-volatile memory
◆ Programmable output characteristic (32 setpoints with 9 bit resolution)
◆ Programmable output formats (PWM or serial Biphase-M)
◆ Programmable PWM Period
◆ Open-drain output for HAL 855
◆ Programmable output current source for HAL 856 (low and high current)
◆ Digital signal processing
◆ Temperature characteristics programmable for matching all common magnetic materials
◆ Programming by modulation of the supply voltage
◆ Lock function and built-in redundancy for EEPROM memory
◆ Operates from –40 °C up to 150 °C ambient temperature
◆ Operates from 4.5 V up to 18 V supply voltage
◆ Operates with static magnetic fields and dynamic magnetic fields up to 2 kHz
◆ Choppered offset compensation
◆ Overvoltage protection on all pins
◆ Reverse-voltage protection on VDD pins
◆ Magnetic characteristics extremely robust against mechanical stress
◆ Short-circuit protected output
◆ EMC-optimized design

Major Applications
Due to the sensor’s versatile programming characteristics, the HAL 85x is the optimal system solution for applications such as:
◆ Contactless potentiometers
◆ Rotary position measurement
◆ Level measurement
◆ Linear position detection
◆ Magnetic field detection