Linear Hall Sensors Family HAL 18xy

HAL 18xy is a new family of universal Hall sensors with
ratiometric, linear analog output. The family members can be
used for magnetic field measurements, current measurements
and detection of any mechanical movement, as well as very accurate
angle or distance measurements. The sensors are very
robust and can be used in harsh electrical and mechanical environments.
The HAL 1820 is programmable by modulating the
supply voltage of the sensor. No additional programming pin is
needed. The major characteristics like magnetic field range,
sensitivity, offset and the temperature coefficients are programmable
in a non-volatile memory. The tolerances of the sensor,
the magnet and the mechanical positioning can be compensated
via programming in the final assembly. This offers a low-cost
alternative for all applications that presently need mechanical
adjustment or laser trimming for calibrating the system.
HAL 1821/1822/1823 offer excellent performance/price trade-
off. The different family members are pre-programmed and
vary by preset sensitivity levels. The sensors are designed for
use in automotive or industrial applications.
The sensors are available in the very small leaded package
TO92UA and SMD package SOT89B.

Features

» Linear Hall sensors with ratiometric analog output

» Various programmable magnetic characteristics

   with non-volatile memory (HAL 1820 only)

» Digital signal processing

» Continuous measurement ranges:

   ±20 mT... ±160 mT (HAL 1820 only)

» Preset sensitivity of 25 mV/mT, 31.25 mV/mT, or 50 mV/mT

   (HAL 1821/1822/1823)

» Temperature characteristics programmable to match all

   common magnetic materials (HAL 1820 only)

» Programmable via supply voltage (HAL 1820 only)

» Lock function and built-in redundancy for EEPROM memory

   (HAL 1820 only)

» Junction temperature range:

   A: -40°C ...+170°C

   K: -40°C ...+140°C

» Supply voltage: 4.5 V ... 5.5 V

Applications

» Linear movement

» Rotary position measurements

» Level measurement