US5881

CMOS Multi-Purpose Switch

US5881 CMOS Multi-Purpose Switch

3901005881 Rev 5.0

24/July/01

Page 1

Features and Benefits

• Chopper stabilized amplifier stage

• New miniature package / thin, high reliability package

• Operation down to 3.5V

• CMOS for optimum stability, quality and cost

Applications

• Solid state switch

• Limit switch

• Current limit

• Interrupter

• Current sensing

Ordering Information

Part No.

Temperature Suffix

Package

Temperature Range

US5881

E

SO or UA

-40

US5881

L

SO or UA

-40

*Contact factory or sales representative for legacy temperature options

Description

The US5881 is a unipolar Hall effect sensor IC fab-

ricated from mixed signal CMOS technology. It in-

corporates advanced chopper stabilization tech-

niques to provide accurate and stable magnetic

switch points. There are many applications for this

sensor in addition to those listed above. The de-

sign, specifications and performance have been

optimized for applications of solid state switches.

the presence of a sufficiently strong South pole

magnetic field facing the marked side of the pack-

in the presence of a weaker South field and remain

off with “0” field. The SOT-23 device is reversed

from the UA package. The SOT-23 output transis-

sufficiently strong North pole magnetic field sub-

jected to the marked face.

Functional Diagram

Note: This is a static-sensitive device; please observe ESD precau-

protection, a 100

Ωresistor in series with V

Output

GND

V

DD

Voltage

Regulator

Chopper

SO Package

Pin 2 - Output

Pin 3 - GND

UA Package

Pin 2 - GND

Pin 3 - Output