Two-Wire Self-Calibrating Differential Speed and Direction Sensor with Vibration Immunity

ATS651LSH

5

651LSH-DS, Rev. 3

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

115 Northeast Cutoff, Box 15036

www.allegromicro.com

Allegro MicroSystems, Inc.

Characteristics

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Minimum Low-State Duration*

Falling edge to subsequent rising edge.

10

–

–

μs

Pulse Width Forward Rotation

38

45

52

μs

Pulse Width Reverse Rotation

76

90

104

μs

Protocol Pulse Width Tolerance

Reference Target

–15

–

15

%

*Maximum Operating Frequency may be increased if the application controller can resolve Minimum Low-State Duration levels down to the specified

value.

Device Characteristics Tables (Continued)