HAL114
Unipolar Hall Switch IC
in CMOS technology
Introduction
The HAL114 is a Hall switch produced in CMOS technol-
ogy. The sensor includes a temperature-compensated
Hall plate, a Schmitt trigger, and an open-drain output
transistor (see Fig. 2).
The HAL114 has a unipolar behavior: The output turns
low with a magnetic south pole on the branded side of
the package (see figures 3 and 4). The output turns high
if the magnetic field is removed. The output signal re-
mains high if the magnetic north pole approaches the
branded side of the package.
The sensor is designed for industrial and automotive ap-
plications and operates with supply voltages from 4.5 V
to 24 V in the ambient temperature range from –40°C up
to 150
°C.
The HAL114 is available in a SMD-package (SOT-89A)
and in a leaded version (TO-92UA).
Features:
– operates from 4.5 V to 24 V supply voltage
– overvoltage protection
– reverse-voltage protection at V
DD
-pin
– short-circuit protected open-drain output by thermal
shutdown
– operates with magnetic fields from DC to 20 kHz
– stable magnetic switching points over a wide supply
voltage range
– 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 switching points
– ideal sensor for contactless switches and speed mea-
surement in hostile automotive and industrial environ-
ments
Specifications
– switching type: unipolar
– output turns low with magnetic south pole on branded
side of package
– output turns high if magnetic field is removed
2
GND
Marking Code
Type
A
HAL114SO,
HAL114UA
114A
Temperature Range
E
114E
C
114C
Operating Junction Temperature Range (T
J
)
A:
T
J
= –40
°C
to +170
°C
E:
T
J
= –40
°C
to +100
°C
C:
T
J
= 0
°C
to +100
°C
The relationship between ambient temperature (T
A
) and
junction temperature (T
J
) is explained on page 8.
Hall Sensor Package Codes
HALXXXPA-T
Temperature Range: A, E, or C
Package: SO for SOT-89A,
UA for TO-92UA
Type: 114
Example:
HAL114UA-E
→
Type: 114
→
Package: TO-92UA
→
Temperature Range: T
J
= –40
°C
to +100
°C
Hall sensors are available in a wide variety of packaging
versions and quantities. For more detailed information,
please refer to the brochure: “Ordering Codes for Hall
Sensors”.
Solderability
– Package SOT-89A: according to IEC68-2-58
– Package TO-92UA: according to IEC68-2-20
V
DD
1
OUT
3
Fig. 1:
Pin configuration
2
MICRONAS INTERMETALL
MICRONAS [ MICRONAS ]
