Dual Output Differential

Speed and Direction Sensor IC

ATS605LSG

4

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

Calibration

First Output Edge

–

–

1

–

tooth

–

3

8

edge

Operating Characteristics (with Allegro 60-0 reference target)

AG

0.75

–

3

mm

Direction Output Delay

Delay between first XOR SPEED output

transition and reported direction change

–

400

–

ns

Maximum Sudden Air Gap Change /

Differential magnetic signal reduction due to

instantaneous air gap change; symmetrical

signal reduction,

air gap change

–

40

–

% pk-pk

Duty Cycle Variation

ΔD

Valid for SPEED(OUTA) and SPEED(OUTB)

40

50

60

%

edges)

–

30

–

G

edges)

–

60

–

G

60-0; unless otherwise specified

Characteristic

Symbol

Test Conditions

Min.

Max.

Unit

7

Typical data is at VCC = 12 V and TA = +25°C. Performance may vary for individual units, within the specified maximum and minimum limits.

8

Possible reduced edge accuracy, ΔD not guaranteed. Edges are sensed target mechanical edges (see Definitions of Terms for Switchpoints).

9

Operating air gap is dependent on the available magnetic field. The available field is target geometry and material dependent and should be independently characterized.

10

Maximum single outward sudden allowable air gap change is in outward direction (increase in air gap).

11

Minimum operating signal, for either operating frequency range, is the differential magnetic field.