SS109

Unipolar Hall Switch

1

V2.10

May 1, 2012

Packages

Features and Benefits

3 pin SOT23 (suffix SO)

3 pin SIP (suffix UA)

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Wide operating voltage range from 3.5V to 24V

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Medium sensitivity

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CMOS technology

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Chopper-stabilized amplifier stage

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Superior temperature stability

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Insensitive to physical stress

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Open drain output

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Low current consumption

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Small Size-SOT23 3L or SIP 3L

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both RoHS Compliant packages

Functional Block Diagram

Application Examples

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Automotive, Consumer and Industrial

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Solid-state switch

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Interrupter

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Speed detection

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Angular position detection

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Linear position detection

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Proximity detection

General Description

The SS109 is a unipolar Hall effect sensor IC fabricated

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 single package.

It incorporates advanced chopper stabilization techniques 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 Transistor (SOT) or in a Plastic Single In Line ( SIP 3L flat). Both 3-lead

packages are RoHS compliant.

VDD

OUT

Voltage

Regulator

Chopper

Hall

Plate

GND

SIP Package

SOT Package

Pin 2 – GND

Pin 2 – OUT

Pin 3 – OUT

Pin 3 – GND