Introduction
The HAL1820 is a new member of the Micronas family of programmable linear Hall-Effect Sensors.

Features
– Ratiometric linear output proportional to the magnetic field
– Various programmable magnetic characteristics with non-volatile memory
– Digital signal processing
– Continuos measurement ranges from ±20 mT to ±160 mT
– Customer readable Micronas production information (like lot number, wafer number, etc.)
– Temperature characteristics programmable for matching all common magnetic materials
– Programming via supply voltage modulation
– Lock function and built-in redundancy for EEPROM memory
– Temperature and stress-stable quiescent output voltage
– on-chip temperature compensation
– active offset compensation
– operates from -40 °C up to 170 °C junction temperature
– operates from 4.5 V up to 5.5 V supply voltage in specification
– operates with static magnetic fields and dynamic magnetic fields up to 2.25 kHz
– overvoltage and reverse-voltage protection at VDD pin
– magnetic characteristics extremely robust against mechanical stress
– short-circuit protected push-pull output
– EMC and ESD optimized design

Major Applications
Due to the sensor’s robust characteristics, the HAL1820 is the optimal system solution for applications such as:
– linear position measurements,
– angle sensors,
– distance measurements,
– mag