HAL 2xy
Hall-Effect Sensor Family
Release Note: Revision bars indicate significant
changes to the previous edition.
DATA SHEET
– superior temperature stability for automotive or
industrial applications
– high ESD rating
– EMC corresponding to ISO 7637
1. Introduction
1.2. Family Overview
The HAL 2xy Hall switch family is produced in CMOS
technology. The sensors include a temperature-com-
pensated Hall plate with active offset compensation, a
comparator, and an open-drain output transistor. The
comparator compares the actual magnetic flux through
the Hall plate (Hall voltage) with the fixed reference
values (switching points). Accordingly, the output tran-
sistor is switched on or off. In addition the HAL22y
sensors features a power-on and undervoltage reset.
The active offset compensation leads to magnetic
parameters which are robust against mechanical
stress effects. In addition, the magnetic characteristics
are constant in the full supply voltage and temperature
range.
The sensors are designed for industrial and automo-
tive applications and operate with supply voltages
from 3.8 V to 24 V in the ambient temperature range
from
−40 °C
up to 125
°C.
For HAL22y the minimum
supply voltage is 4.3 V.
The HAL 2xy family is available in the SMD package
SOT89B-3 and in the leaded versions TO92UA-5 and
TO92UA-6.
This sensor family consists of sensors with latching
and unipolar output behavior.
Type
201
202
203
204
206
207
208
210
211
Switching
Behavior
unipolar
latching
latching
latching
unipolar
unipolar
unipolar
unipolar
unipolar with
inverted output
(north polarity)
unipolar
Sensitivity
low
high
medium
low
high
low
medium
high
high
see
Page
212
1.1. Features
– switching offset compensation
– operates from 3.8 V to 24 V supply voltage (HAL22y
minimum supply voltage is 4.3 V)
– power-on and undervoltage reset in case of HAL22y
– operates with static magnetic fields and dynamic
magnetic fields up to 10 kHz
– overvoltage protection at all pins
– reverse-voltage protection at V
DD
-pin
– magnetic characteristics are robust against
mechanical stress effects
– short-circuit protected open-drain output by thermal
shut down
– constant switching points over a wide supply volt-
age and temperature range
– the decrease of magnetic flux density caused by
rising temperature in the sensor system is compen-
sated by a built-in negative temperature coefficient
of the magnetic characteristics
low
Family members with power-on and undervoltage
reset (HAL22y):
Type
220
221
Switching
Behavior
latching
unipolar
Sensitivity
high
low
see
Page
4
Jan. 11, 2010; DSH000141_003EN
Micronas
MICRONAS [ MICRONAS ]
