AL8201-1B56

Introduction

The HAL82x is a new member of the Micronas family of programmable linear Hall sensors. As an extension to the HAL 8x5, it offers an improved temperature performance, enhanced wiring failure detection and a 14-bit multiplexed analog data output. It is possible to program different sensors which are in parallel to the same supply voltage individually.

Features

– high-precision linear Hall effect sensor with ratio metric output and digital signal processing
– Low output voltage drifts over temperature
– 12-bit analog output and 14-bit multiplex analog output
– multiple programmable magnetic characteristics in a non-volatile memory (EEPROM) with redundancy and lock function
– open-circuit (ground and supply line break detection) with 5 kΩpull-up and pull-down resistor, over voltage and undervoltage 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
– temperature characteristics are programmable for matching 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
– operates with static magnetic fields and dynamic magnetic fields up to 1 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

Major Applications

Due to the sensor’s versatile programming character istics and low temperature drifts, the HAL82x is the optimal system solution for applications such as:
– contactless potentiometers,
– angle sensors (like throttle position, paddle position and EGR applications),
– distance measurements,
– magnetic field and current measurement.