12

651LSH-DS

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

115 Northeast Cutoff, Box 15036

www.allegromicro.com

Allegro MicroSystems, Inc.

Two-Wire Self-Calibrating Differential Speed and Direction Sensor with Vibration Immunity

ATS651LSH

Package SH, 4-pin SIP

The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889;

5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents pending.

Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit

improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the

information being relied upon is current.

Allegro products are not authorized for use as critical components in life-support devices or systems without express written approval.

The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use;

nor for any infringement of patents or other rights of third parties which may result from its use.

Copyright © 2005 Allegro MicroSystems, Inc.

1.08 .043

8.0

.315

5.5 .217

0.38 .015

5.0

.244

5.8

.228

4.0

.157

2.9

.114

0.23 .009

1.7

.067

1 .039

0.6 .024

0.6 .024

1.27

.050

20.95 .825

13.05 .514

24

3

1

A

A

A

B

C

C

D

D

B

Dambar removal protrusion (16X)

Metallic protrusion, electrically connected to pin 4 and substrate (both sides)

Active Area Depth, 0.43 [.017]

Thermoplastic Molded Lead Bar for alignment during shipment

E

E

E

E

1.50 .0591

1.50 .0591

Hall elements (3X); controlling dimension inches

E

Preliminary dimensions, for reference only

Untoleranced dimensions are nominal.

Dimensions in millimeters

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

Dimensions exclusive of mold flash, burrs, and dambar protrusions

Exact case and lead configuration at supplier discretion within limits shown