SENSITIVE

HALL-EFFECT SWITCHES

FOR HIGH-TEMP. OPERATION

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

TYPICAL OPERATING CHARACTERISTICS (cont.)

CHANGE IN OPERATE POINT

10

15

20

25

SUPPLY VOLTAGE IN VOLTS

0

Dwg. GH-042-1

5

-5.0

0

5.0

10

15

20

T

= +25

°C

A

OPERATION

The output of these devices (pin 3) switches low when the magnetic field

at the Hall sensor exceeds the operate point threshold (B

output voltage is V

release point threshold (B

the magnetic operate and release points is called the hysteresis (B

device. This built-in hysteresis allows clean switching of the output even in

the presence of external mechanical vibration and electrical noise.

Extensive applications information for Hall-effect sensors is available in:

• Hall-Effect IC Applications Guide, Application Note 27701;

• Hall-Effect Devices: Soldering, Gluing, Potting, Encapsulating, and Lead

Forming, Application Note 27703.1;

• Soldering of Through-Hole Hall-Sensor Dervices, Application Note 27703;

and

• Soldering of Surface-Mount Hall-Sensor Devices, Application Note 27703.2.

All are provided in Allegro Electronic Data Book, AMS-702. or at

www.allegromicro.com

SENSOR LOCATIONS

(

1

3

2

Dwg. MH-011-10A

0.0195"

0.50 mm

NOM

BRANDED

SURFACE

ACTIVE AREA DEPTH

0.082"

2.07 mm

0.055"

1.39 mm

A

Suffix “UA”

Suffix “LT”

0.043"

1.09 mm

1

3

2

Dwg. MH-008-2D

0.0305"

0.775 mm

NOM

ACTIVE AREA DEPTH

0.089"

2.26 mm

A

Allegro