SS1331
Unipolar Hall Switch-Low Sensitivity
General Description
The SS1331 is a unipolar Hall-effect sensor IC fab-
ricated from CMOS technology. The device inte-
grates a voltage regulator, Hall sensor with dy-
namic offset cancellation system, small signal am-
plifier, Schmitt trigger and an open-drain output
driver. With suitable output pull up, they can be
used with bipolar or CMOS logic circuits.
both temperature and supply voltage changes. The
unipolar switching characteristic makes these de-
vices ideal for use with a simple bar or rod magnet.
Thanks to its wide operating voltage range and ex-
tended choice of temperature range, it is quite suit-
able for use in automotive, industrial and consumer
applications.
These Hall-effect switches are monolithic integrat-
ed circuits with tighter magnetic specifications, de-
signed to operate continuously over extended tem-
peratures to +150°C,and are more stable with
The device is delivered in a Small Outline Tran-
sistor (SOT) or in a Plastic Single In Line (SIP 3L
flat). Both 3-lead packages are RoHS compliat.
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. ]
