Two-Wire True Zero Speed Miniature Differential

Peak-Detecting Gear Tooth Sensor with Continuous Calibration

ATS642LSH

3

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

OPERATING CHARACTERISTICS

Characteristic

Symbol

Test Conditions

Min.

Max.

Units

ELECTRICAL CHARACTERISTICS

V

4

2

–

0

.

4

C

°

5

6

1

<

Undervoltage Lockout

V

0

.

4

–

–

V

0

Supply Zener Clamp Voltage

28

–

–

V

Supply Zener Current

–

–

3 mA

mA

Supply Current

A

m

0

.

8

0

.

6

0

.

4

1

I

-

H

S

L

2

4

6

S

T

A

A

m

4

.

8

0

.

7

9

.

5

2

I

-

H

S

L

2

4

6

S

T

A

A

m

0

.

6

1

0

.

4

1

0

.

2

1

1

I

-

H

S

L

2

4

6

S

T

A

A

m

8

.

6

1

0

.

4

1

8

.

1

1

2

I

-

H

S

L

2

4

6

S

T

A

Supply Current Ratio

/

Ratio of high current to low current

1.85

–

3.05

–

Reverse Battery Current

A

m

5

–

–

–

V

8

1

–

=

POWER-ON STATE CHARACTERISTICS

POS

––

s

m

2

1

–

m

p

r

0

0

1

<

d

e

e

p

s

r

a

e

g

t

e

g

r

a

T

OUTPUT STAGE

dI/dt

–

10

–

mA/μs

Continued on the next page.