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Ratiometric Linear Hall Effect Sensor
for High-Temperature Operation
A1321, A1322,
and A1323
11
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Package UA, 3-Pin SIP
For the latest version of this document, visit our website:
www.allegromicro.com
Copyright ©2004-2008, Allegro MicroSystems, Inc.
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 de par tures from the detail spec i fi ca tions as may be required to per-
mit improvements in the per for mance, 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’s products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the
failure of that life support device or system, or to affect the safety or effectiveness of that device or system.
The in for ma tion in clud ed herein is believed to be ac cu rate and reliable. How ev er, Allegro MicroSystems, Inc. assumes no re spon si bil i ty for its use;
nor for any in fringe ment of patents or other rights of third parties which may result from its use.
C
C
B B
C
C
C
C
4.09 4.09
1.52 1.52
0.79 0.79
3.02
14.99
3.02
15.75
0.43
1.27
0.43
1.27
0.41
0.41
1.02
MAX
2.16
MAX
45°
3X10°
45°
45° 45°
2.01
1.44
2.01
1.44
231
231
A A
Gate and tie bar burr area (for conventional leadframe, gate burr only)
Hall element, not to scale
A
B
C
Active Area Depth, 0.50 mm
Package UA, Matrix Leadframe
Package UA, Conventional Leadframe
All dimensions nominal, not for tooling use
Dimensions in millimeters
Exact case and lead configuration at supplier
discretion within limits shown