Micropower, Ultrasensitive

Hall-Effect Switches

A3212

2

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

This device includes on a single silicon chip a Hall-voltage gen-

erator, small-signal amplifier, chopper stabilization, a latch, and

a MOSFET output. Advanced CMOS processing is used to take

advantage of low-voltage and low-power requirements, compo-

nent matching, very low input-offset errors, and small component

geometries.

Four package styles provide magnetically optimized solutions for

most applications. Miniature low-profile surface-mount package

types EH and EL (0.75 and 0.50 mm nominal height) are leadless,

LH is a 3-pin low-profile SMD, and UA is a three-pin SIP for

through-hole mounting. Packages are lead (Pb) free (suffix, –T)

with 100% matte tin plated leadframes.

Description (continued)

Absolute Maximum Ratings

Characteristic

Symbol

Notes

Rating

Units

Supply Voltage

5V

Magnetic Flux Density

B

Unlimited

G

Output Off Voltage

5V

Output Current

1mA

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

Selection Guide

Part Number

Package

Ambient Temperature

T

State in

Magnetic Field

3000 pieces per reel

2 mm x 3 mm, 0.75 mm nominal height DFN

–40 to 85

Off

3000 pieces per reel

2 mm x 2 mm, 0.50 mm nominal height DFN

A3211ELHLT–T

3000 pieces per reel

3-pin surface mount SOT23W

3000 pieces per reel

2 mm x 3 mm, 0.75 mm nominal height DFN

–40 to 85

On

3000 pieces per reel

2 mm x 2 mm, 0.50 mm nominal height DFN

A3212ELHLT–T

3000 pieces per reel

3-pin surface mount SOT23W

A3212EUA–T

500 pieces per bulk bag

SIP-3 through hole

A3212LLHLT–T

3000 pieces per reel

3-pin surface mount SOT23W

–40 to 150

A3212LUA–T

500 pieces per bulk bag

SIP-3 through hole