3163 Просмотр технического описания (PDF) - Allegro MicroSystems

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производитель

3163

HALL-EFFECT SWITCH FOR 2-WIRE APPLICATIONS

Allegro MicroSystems 

SENSOR LOCATIONS

(±0.005" [0.13 mm] die placement)

Suffix “LT”

ACTIVE AREA DEPTH

0.0305"

0.775 mm

NOM

0.088"

2.24 mm

0.045"

1.14 mm

A

1

2

3

Dwg. MH-008-8A

Suffix “UA”

ACTIVE AREA DEPTH

0.0195"

0.50 mm

NOM

0.080"

2.04 mm

0.056"

1.44 mm

A

BRANDED

SURFACE

1

2

3

Dwg. MH-011-9B

Allegro

3163

HALL-EFFECT SWITCH

FOR 2-WIRE APPLICATIONS

FUNCTIONAL DESCRIPTION

Operation. The output of these devices turns on when a

magnetic field (south pole) perpendicular to the Hall

sensor exceeds the operate point threshold (BOP). After

turn on, the output will source current (IOUT(H)) equal to

the device operating current plus a current source. When

the magnetic field is decreased (south pole) below the

release point (BRP), the output will source current (IOUT(L))

equal to the Hall-effect sensor operating current with the

current source turned off. The difference in the magnetic

operate and release points is the hysteresis (Bhys) of the

device. The hysteresis allows clean switching of the

output even in the presence of external mechanical vibra-

tion or electrical noise.

Powering up in the absence of a magnetic field (less

than BOP and higher than BRP) will allow an indeterminate

output state. The correct state is warranted after the first

excursion beyond BOP or BRP.

+I

IOUT(H)

www.allegromicro.com

IOUT(L)

0

0

B RP

B OP

FLUX DENSITY

+B

Dwg. GH-007-8

5

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