ATS667LSG datasheet(5/14 Pages) ALLEGRO

5 / 14 page

True Zero-Speed, High Accuracy Gear Tooth Sensor IC

ATS667LSG

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

Reference Gear Magnetic Profile

Two Tooth-to-Valley Transitions

-500

-400

-300

-200

-100

100

200

300

400

500

Gear Rotation (°)

024

0.50

(mm)

Air Gap

0.50 mm AG

3.10 mm AG

0.75

1.00

1.25

1.50

1.75

2.00

2.25

2.50

2.75

3.10

3.00

Reference Gear Magnetic Gradient Amplitude

With Reference to Air Gap

Air Gap (mm)

1.0

1.5

2.0

0.5

2.5

3.0

1400

1200

1000

800

600

400

200

Reference Target 60-0 (60 Tooth Target)

Characteristics

Symbol

Test Conditions

Typ.

Units

Symbol Key

Outside Diameter

Outside diameter of target

120

Face Width

Breadth of tooth, with respect

to branded face

6mm

Angular Tooth Thickness

Length of tooth, with respect

to branded face

deg.

Angular Valley Thickness

Length of valley, with respect

to branded face

deg.

Tooth Whole Depth

3mm

Material

Low Carbon Steel

–

Air Gap

Branded Face of Package

Reference Target

60-0

of Package

Branded Face

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