HAL11x
Hall Effect Sensor Family
in CMOS technology
1.2. Family Overview
The types differ according to the mode of switching.
Release Notes: Revision bars indicate significant
changes to the previous edition.
Type
Switching Behavior
unipolar
see Page
1. Introduction
HAL114
HAL115
10
12
bipolar
The HAL11x family consists of different Hall switches
produced in CMOS technology.
All sensors include a temperature-compensated Hall
plate, acomparator, andanopen-drainoutputtransistor.
The comparator compares the actual magnetic flux
through the Hall plate (Hall voltage) with the fixed refer-
ence values (switching points). Accordingly, the output
transistor is switched on or off. The sensors of this family
differ in the switching behavior.
Bipolar Switching Sensors:
The output turns low with the magnetic south pole on the
branded side of the package and turns high with the
magnetic north pole on the branded side. The output
state is not defined for all sensors if the magnetic field is
removed again. Some sensors will change the output
state and some sensors will not.
The sensors are designed for industrial and automotive
applications and operate with supply voltages from
4.5 V to 24 V in the ambient temperature range from
–40 °C up to 125 °C.
Unipolar Switching Sensors:
The output turns low with the magnetic south pole on the
branded side of the package and turns high if the mag-
netic field is removed. The sensor does not respond to
the magnetic north pole on the branded side.
AllsensorsareavailableinanSMD-package(SOT-89B)
and in a leaded version (TO-92UA).
1.1. Features
1.3. Marking Code
– operates from 4.5 V to 24 V supply voltage
– overvoltage protection
All Hall sensors have a marking on the package surface
(branded side). This marking includes the name of the
sensor and the temperature range.
– reverse-voltage protection at V -pin
DD
– short-circuit protected open-drain output by thermal
shut down
Type
Temperature Range
E
– operates with static magnetic fields and dynamic mag-
netic fields up to 20 kHz
K
C
– stable switching points over a wide supply voltage
range
HAL114
HAL115
114K
115K
114E
115E
114C
115C
– the decrease of magnetic flux density caused by rising
temperature in the sensor system is compensated by
a built-in negative temperature coefficient of the mag-
netic characteristics
Micronas
3
MICRONAS [ MICRONAS ]
