SS1438
Unipolar Hall Switch
General Description
The SS1438 is a unipolar Hall effect sensor IC fab-
ricated from mixed signal CMOS technology. The
device integrates a voltage regulator, Hall sensor
with dynamic offset cancellation system, Schmitt
trigger and an open-drain output driver, all in a sin-
gle package.
HED – Hall Electronic Device - in addition to those
listed above. Thanks to its wide operating voltage
range and extended choice of temperature range, it
is quite suitable for use in automotive, industrial
and consumer applications.
The device is delivered in a Small Outline Transis-
tor (SOT) for surface mount process or in a Plastic
Single In Line (SIP flat) for through- hole mount.
Both 3-lead packages are RoHS compliant.
It incorporates advanced chopper stabilization tech-
niques to provide accurate and stable magnetic
switch points. There are many applications for this
Glossary of Terms
MilliTesla (mT), Gauss Units of magnetic flux density: 1mT = 10 Gauss
RoHS
Restriction of Hazardous Substances
Operating Point (BOP)
Magnetic flux density applied on the branded side of the package which turns the
output driver ON (VOUT = VDSon
)
Release Point (BRP)
Magnetic flux density applied on the branded side of the package which turns the
output driver OFF (VOUT = high)
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V3.10 Nov 1, 2013
SECELECTRONICS [ SEC Electronics Inc. ]
