ATS672LSB datasheet(6/15 Pages) ALLEGRO

6 / 15 page

30Dec03, Rev. 1.42

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

115 Northeast Cutoff, Box 15036

www.allegromicro.com

Allegro MicroSystems, Inc.

Self-Calibrating Gear Tooth Sensor with 9-Bit Signal Capture

ATS672LSB

OPERATING CHARACTERISTICS using reference target 8X and test circuit #1; air gap within AG range, and over rated ambient

temperature range, unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Relative Timing Accuracy*

TICRel

During initial calibration; rising and falling mechanical

edges; RPM = 1000; gear eccentricity < 0.1 mm

–

deg.

TRel

After initial calibration; rising mechanical edge;

RPM = 1000; gear eccentricity < 0.1 mm

–

0.3

0.6

deg.

After initial calibration; falling mechanical edge;

RPM = 1000; gear eccentricity < 0.1 mm

–

0.5

0.8

deg.

Operational Air Gap Range

Output switching: Running mode only

–

0.5

2.5

*Relative Timing Accuracy range is the change in edge position over the AG range and the device operating temperature

range.

ICC On, VCC =4.0 V

-40

150

ICC Off, VCC =4.0 V

-40

150

225

300

375

450

-40

150

TA (°C)

VSAT at ISINK = 15 mA, VCC = 4.0 V

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