HAL85X Datasheet, PDF(1/2 Page) Micronas – Programmable Hall-Effect Sensors with Arbitrary Output

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HAL85X Datasheet, PDF (1/2 Pages) Micronas – Programmable Hall-Effect Sensors with Arbitrary Output

PRODUCT INFORMATION

HAL 85x

Oct/2002

HAL 85x

Programmable Hall-Effect Sensors with Arbitrary Output

The HAL 85x complement the existing Hall-

effect sensor family HAL 8xx. Both univer-

sal magnetic field sensors provide an arbi-

trary output signal. The sensors are pro-

duced in submicron CMOS technology.

In combination with a rotating or moving

magnet, the sensors can be employed for

angle, distance, and level measurements.

The sensors provide either a pulse width

modulated (PWM) output signal or a serial

Biphase-M output.

Major characteristics like magnetic field

range, output characteristic, output format,

sensitivity, shift (duty cycle of the PWM out-

put signal or the serial output word), PWM

period, low and high current, and the tem-

perature coefficients can easily be adjusted

to the magnetic circuit (linear and quadratic)

by programming the non-volatile memory.

The output characteristic can be set with

32 setpoints with a resolution of 9 bit

The sensors were designed to translate a

linear magnetic field into an arbitrary output

signal or a non-linear magnetic field into a

linear output signal. The sensors are avail-

able in the very small leaded package

TO-92UT.

Features

â High-precision linear Hall effect sensors

with different output formats

â Various programmable magnetic charac-

teristics with non-volatile memory

â Programmable output characteristic

(32 setpoints with 9 bit resolution)

â Programmable output formats

(PWM or serial Biphase-M)

â Programmable PWM Period

â Open-drain output for HAL 855

â Programmable output current source for

HAL 856 (low and high current)

â Digital signal processing

â Temperature characteristics program-

mable for matching all common mag-

netic materials

â Programming by modulation of the

supply voltage

â Lock function and built-in redundancy for

EEPROM memory

â Operates from â40 Â°C up to 150 Â°C

ambient temperature

â Operates from 4.5 V up to 18 V supply

voltage

â Operates with static magnetic fields and

dynamic magnetic fields up to 2 kHz

â Choppered offset compensation

â Overvoltage protection on all pins

â Reverse-voltage protection on VDD pins

â Magnetic characteristics extremely

robust against mechanical stress

â Short-circuit protected output

â EMC-optimized design

Major Applications

Due to the sensorâs versatile programming

characteristics, the HAL 85x is the optimal

system solution for applications such as:

â Contactless potentiometers

â Rotary position measurement

â Level measurement

â Linear position detection

â Magnetic field detection

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