3421 datasheet(4/12 Pages) ALLEGRO

4 / 12 page

3421 AND 3422

HALL-EFFECT,

DIRECTION-DETECTION

SENSORS

115 Northeast Cutoff, Box 15036

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

A3421xKA

A3422xKA

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Min.

Typ.

Max.

Units

Operate Point

BOP

TA = -40°C

140

185

300

—

TA = +25°C

130

160

280

—

TA = Maximum

120

—

260

—

Release Point3

BRP

TA = -40°C

-300

-190

-140

-85

-19

—

TA = +25°C

-280

-175

-130

-75

-18

—

TA = Maximum

-260

—

-120

-75

-16

—

Hysteresis

Bhys

TA = -40°C

280

375

—

TA = +25°C

260

335

—

TA = Maximum

240

—

Operate Differential

BOP1 - BOP2

——

±80

—

±60

Release Differential

BRP1 - BRP2

——

±80

—

±60

MAGNETIC CHARACTERISTICS over operating voltage range.

NOTES: 1. Magnetic flux density is measured at most sensitive area of device,

nominally located 0.014” (0.37 mm) below the branded face of the package.

2. Typical Data is at VCC = 12 V and TA = +25

°C and is for design information only.

3. As used here, negative flux densities are defined as less than zero (algebraic convention).

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