SS1438

Unipolar Hall Switch

2

V3.10

Nov 1, 2013

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.

It incorporates advanced chopper stabilization tech-

niques to provide accurate and stable magnetic

switch points. There are many applications for this

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.

Glossary of Terms

MilliTesla (mT), Gauss

Units of magnetic flux density: 1mT = 10 Gauss

RoHS

Restriction of Hazardous Substances

Magnetic flux density applied on the branded side of the package which turns the

Release Point (BRP)

Magnetic flux density applied on the branded side of the package which turns the