Two-Wire True Zero Speed Miniature Differential

Peak-Detecting Gear Tooth Sensor with Continuous Calibration

ATS642LSH

7

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

Duty Cycle versus Air Gap*

43

45

47

49

51

53

55

57

59

61

41

0.5

1.0

1.52.0

2.53.0

AG (mm)

TA (°C)

-40

25

150

Duty Cycle versus Ambient Temperature

43

45

47

49

51

53

55

57

59

61

41

–50

0

50

100

150

AG (mm)

0.5

1.5

2.75

Duty Cycle Variance versus Air Gap

Mean ± 3 Sigma, 25°C

-6

-4

-2

0

2

4

6

0.5

1.0

1.5

2.0

2.5

3.0

AG (mm)

*The trend of duty cycle versus air gap is driven by the actual magnetic profile of the

target (see figure on page 5).