HAL1821...HAL1823 DATA SHEET
4July 17, 2013; DSH000157_002EN Micronas
Linear Hall-Effect Sensor Family in TO92UA pack-
age
Release Note: Revision bars indicate significant
changes to the previous edition.
1. Introduction
The HAL182x is a new family of linear Hall-effect sen-
sors. It is a universal magnetic field sensor with a ratio-
metric, linear analog output. This sensor family can be
used for magnetic field measurements, current mea-
surements and detection of mechanical movements.
Very accurate angle measurements or distance mea-
surements can also be done. The sensors are very
robust and can be used in harsh environments.
The output voltage is proportional to the magnetic flux
density through the hall plate. The choppered offset
compensation leads to stable magnetic characteristics
over supply voltage and temperature.
The different family members vary by sensitivity
(25 mV/mT, 31.25 mV/mT and 50 mV/mT). The quies-
cent output voltage (offset) is for all family members
50% of supply voltage.
The sensor is designed for automotive and industrial
applications and operates in the junction temperature
range from –40 °C up to 170 °C. The HAL182x is avail-
able in the very small leaded packages TO92UA-1 and
TO92UA-2.
1.1. Major Applications
Due to the sensor’s robust characteristics, the
HAL182x is the optimal system solution for applica-
tions such as:
– linear position measurements,
– angle sensors,
– distance measurements,
– magnetic field and current measurement.
1.2. Features
– ratiometric linear output proportional to the mag-
netic field
– temperature and stress stable quiescent output volt-
age
– very accurate sensitivity and offset
– customized versions possible
– on-chip temperature compensation
– active offset compensation
– operates from 40 °C up to 170 °C junction temper-
ature
– 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 VSUP pin
– magnetic characteristics extremely robust against
mechanical stress
– short-circuit protected push-pull output
– EMC and ESD optimized design
1.3. Family Overview
1.4. Marking Code
The HAL182x has a marking on the package surface
(branded side). This marking includes the name of the
sensor and the temperature range.
1.5. Operating Junction Temperature Range (TJ)
The Hall sensors from Micronas are specified to the
chip temperature (junction temperature TJ).
A: TJ = 40 °C to +170 °C
The relationship between ambient temperature (TA)
and junction temperature is explained in Section 4.1.
on page 16.
Type Offset Sensitivity see
Page
1821 50% of VSUP 50 mV/mT 13
1822 50% of VSUP 31.25 mV/mT 13
1823 50% of VSUP 25 mV/mT 13
Type Temperature Range
A
HAL 1821 1821A
HAL 1822 1822A
HAL 1823 1823A