Ratiometric Linear Hall Effect Sensor

for High-Temperature Operation

A1321, A1322,

and

A1323

10

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

Package LH, 3-Pin; (SOT-23W)

Terminal List

Symbol

Number

Description

Package LH

Package UA

VCC

1

1

Connects power supply to chip

VOUT

2

3

Output from circuit

GND

3

2

Ground

Package LH

Package UA

Pin-out Drawings

23

1

2

1

3

0.15

0.00

.006

.000

1.17

0.75

.046

.030

0.50

0.30

.020

.012

2.10

1.85

.083

.073

3.00

2.70

.118

.106

1.49

NOM

.059

0.96

NOM

.038

0.20

0.08

.008

.003

8º

0º

0.60

0.25

.024

.010

C

SEATING

PLANE

A

B

3X

0.20 [.008] M C A B

0.15 [.006] M C A B

C

0.10 [.004]

3X

0.95 .037

1.90 .075

0.25 .010

3.04

2.80

.120

.110

2

1

3

GAUGE PLANE

SEATING PLANE

B

A

B

Preliminary dimensions, for reference only

Dimensions in millimeters

U.S. Customary dimensions (in.) in brackets, for reference only

(reference JEDEC TO-236 AB, except case width and terminal tip-to-tip)

Dimensions exclusive of mold flash, gate burrs, and dambar protrusions

Exact case and lead configuration at supplier discretion within limits shown

Hall element (not to scale)

Active Area Depth 0.28 [.011]

A

A

A