●Introduction
●The HAL 805 is a recent member of the Micronas family of programmable linear Hall sensors. As an extension to the HAL 800, it offers open-circuit detection and individual programming of different sensors which are in parallel to the same supply voltage.
●Features
●– high-precision linear Hall effect sensor with ratiometric output and digital signal processing
●– multiple programmable magnetic characteristics in a non-volatile memory (EEPROM) with redundancy and lock function
●– open-circuit detection (ground and supply line break detection)
●– for programming an individual sensor within several sensors in parallel to the same supply voltage, a selection can be done via the output pin
●– to enable programming of an individual sensor amongst several sensors running parallel to the same supply voltage, each sensor can be selected via its output pin
●– temperature characteristics are programmable for matching all common magnetic materials
●– programmable clamping function
●– programming through a modulation of the supply voltage
●– operates from −40 °C up to 150 °C ambient temperature
●– operates from 4.5 V up to 5.5 V supply voltage in specification and functions up to 8.5 V
●– total error < 2.0% over operating voltage range and temperature range
●– operates with static magnetic fields and dynamic magnetic fields up to 2 kHz
●– overvoltage and reverse-voltage protection at all pins
●– magnetic characteristics extremely robust against mechanical stress
●– short-circuit protected push-pull output
●– EMC and ESD optimized design
●1.1. Major Applications
●Due to the sensor’s versatile programming character istics, the HAL 805 is the optimal system solution for
●applications such as:
●– contactless potentiometers,
●– angle sensors,
●– distance measurements,
●– magnetic field and current measurement.
