recoverability after temperature cycling. Having the Hall element

and an amplifier on a single chip minimizes many problems normally

associated with low-level analog signals.

Outputprecisionisobtainedbyinternalgainandoffsettrimadjustments

made at end-of-line during the manufacturing process.

The A132X family is provided in a 3-pin single in-line package

(UA) and a 3-pin surface mount package (LH). Each package is

available in a lead (Pb) free version (suffix, –T) , with a 100% matte

tin plated leadframe.

Description (continued)

Ratiometric Linear Hall Effect Sensor

for High-Temperature Operation

A1321, A1322,

and

A1323

2

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

Selection Guide

Part Number

Mounting

(ºC)

Sensitivity,

Typ. (mV/G)

A1321ELHLT-T

Yes

7-in. reel, 3000 pieces/reel

Surface Mount

–40 to 85

5.000

A1321EUA-T

Yes

Bulk, 500 pieces/bag

SIP through hole

A1321LLHLT-T

Yes

7-in. reel, 3000 pieces/reel

Surface Mount

–40 to 150

A1321LUA-T

Yes

Bulk, 500 pieces/bag

SIP through hole

A1322ELHLT-T

Yes

7-in. reel, 3000 pieces/reel

Surface Mount

–40 to 85

3.125

A1322EUA-T

Yes

Bulk, 500 pieces/bag

SIP through hole

A1322LLHLT-T

Yes

7-in. reel, 3000 pieces/reel

Surface Mount

–40 to 150

A1322LUA-T

Yes

Bulk, 500 pieces/bag

SIP through hole

A1323ELHLT-T

Yes

7-in. reel, 3000 pieces/reel

Surface Mount

–40 to 85

2.500

A1323EUA-T

Yes

Bulk, 500 pieces/bag

SIP through hole

A1323LLHLT-T

Yes

7-in. reel, 3000 pieces/reel

Surface Mount

–40 to 150

A1323LUA-T

Yes

Bulk, 500 pieces/bag

SIP through hole

a. Certain variants cited in this footnote are in production but have been determined to be LAST TIME BUY. This classification indicates that sale of this device is

currently restricted to existing customer applications. The device should not be purchased for new design applications because obsolescence in the near future is

probable. Samples are no longer available. Status change: October 31, 2006. Deadlilne for receipt of LAST TIME BUY ORDERS: April 27, 2007. These variants

include: A1322ELHLT, A1322EUA, and A1323LLHLT.

b. Certain variants cited in this footnote are in production but have been determined to be NOT FOR NEW DESIGN. This classification indicates that sale of this

device is currently restricted to existing customer applications. The device should not be purchased for new design applications because obsolescence in the near

future is probable. Samples are no longer available. Status change: May 1, 2006. These variants include: A1321ELHLT, A1321EUA, A1321LLHLT, A1321LUA,

A1322LLHLT, A1322LUA, A1323ELHLT, A1323EUA, and A1323LUA.

Absolute Maximum Ratings

Characteristic

Symbol

Notes

Rating

Units

Supply Voltage

voltages above the minimum supply Zener

turning on.

8V

Output Voltage

8V

Reverse Supply Voltage

–0.1

V

Reverse Supply Voltage

–0.1

V

Output Sink Current

10

mA

Operating Ambient Temperature

Range E

–40 to 85

ºC

Range L

–40 to 150

ºC

Maximum Junction Temperature

165

ºC

Storage Temperature

–65 to 170

ºC