HALL-EFFECT SWITCHES

FOR HIGH-TEMPERATURE

OPERATION

115 Northeast Cutoff, Box 15036

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

SENSOR LOCATIONS

(

±0.005" [0.13 mm] die placement)

OPERATION

The output of these devices (pin 3) switches low when the mag-

netic field at the Hall sensor exceeds the operate point threshold (B

At this point, the output voltage is V

is reduced to below the release point threshold (B

goes high. The difference in the magnetic operate and release points is

called the hysteresis (B

clean switching of the output even in the presence of external mechani-

cal vibration and electrical noise.

APPLICATIONS INFORMATION

Hall effect applications information is available in the “Hall-Effect

IC Applications Guide”, which can be found in the latest issue of

Allegro MicroSystems Data Book AMS-702.

CHANGE IN OPERATE POINT

Suffix “LT”

Suffix “U”

Suffix “UA”

0.043"

1.09 mm

1

3

2

Dwg. MH-008-2C

0.030"

0.76 mm

NOM

ACTIVE AREA DEPTH

0.089"

2.26 mm

A

1

3

2

Dwg. MH-002-2B

0.016"

0.41 mm

NOM

BRANDED

SURFACE

ACTIVE AREA DEPTH

0.070"

1.78 mm

A

0.091"

2.31 mm

1

3

2

Dwg. MH-011-2C

0.019"

0.48 mm

NOM

BRANDED

SURFACE

ACTIVE AREA DEPTH

0.082"

2.07 mm

0.055"

1.38 mm

A

10

15

20

25

SUPPLY VOLTAGE IN VOLTS

0

Dwg. GH-042

5

-5.0

0

5.0

10

15

20

T

= +25°C

A