ATS625LSG datasheet(4/21 Pages) ALLEGRO

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True Zero-Speed Low-Jitter High Accuracy

Gear Tooth Sensor

ATS625LSG

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

OPERATING CHARACTERISTICS with 60+2 reference target

Operational Air Gap

Measured from sensor branded face to

target tooth

0.5

–

2.5

Relative Timing Accuracy, Sequen-

tial Mechanical Rising Edges

ERRRR

Relative to measurement taken at

AG = 1.5 mm

–

±0.4

deg.

Relative Timing Accuracy, Sequen-

tial Mechanical Falling Edges

ERRFF

Relative to measurement taken at

AG = 1.5 mm

–

±0.4

deg.

Relative Timing Accuracy, Signa-

ture Mechanical Rising Edge4

ERRSIGR

Relative to measurement taken at

AG = 1.5 mm

–

±0.4

deg.

Relative Timing Accuracy, Signa-

ture Mechanical Falling Edge5

ERRSIGF

Relative to measurement taken at

AG = 1.5 mm

–

±1.5

deg.

Relative Repeatability, Sequential

Rising and Falling Edges6

TθE

360° Repeatability, 1000 edges; peak-peak

sinusoidal signal with BPEAK ≥ BIN(min) and

6° period

–

0.08

deg.

Operating Signal7

BIN

AG(min) < AG < AG(max)

–

1 Test condition is ICC(max) + 3 mA.

2 Upper limit is ICC(max) + 3 mA.

3 Power-on speed ≤ 200 rpm. Refer to the Sensor Description section for information on start-up behavior.

4 Detection accuracy of the update algorithm for the first rising mechanical edge following a signature region can be adversely affected by the magnetic

bias of the signature region. Please consult with Allegro field applications engineering for aid with assessment of specific target geometries.

5 Detection accuracy of the update algorithm for the falling edge of the signature region is highly dependent upon specific target geometry. Please consult

with Allegro field applications engineering for aid with assessment of specific target geometries.

6 The repeatability specification is based on statistical evaluation of a sample population.

7 Peak-to-peak magnetic flux strength required at Hall elements for complying with operational characteristics.

Operating Characteristics, continued Valid at TA = –40°C to 150°C, TJ ≤TJ(max), over full range of AG, unless otherwise noted;

typical operating parameters: VCC = 12 V and TA = 25°C

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

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