Two-Wire, Differential, Vibration-Resistant Sensor

with Speed and Direction Output

ATS699LSN

5

Allegro MicroSystems, LLC

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

Characteristics

Symbol

Test Conditions

Min.

Max.

Unit

DAC CHARACTERISTICS

Allowable User-Induced Offset

Magnitude valid for both differential magnetic

channels

–60

–

60

G

PERFORMANCE CHARACTERISTICS

Operational Magnetic Range

Peak to peak differential signal; valid for each

magnetic channel.

30

–

1200

G

Air Gap Range

Using Allegro 60-0 reference target

0.5

–

2.5

mm

Vibration Immunity (Startup)

-xxxxL variant

–

–

degrees

-xxxxH variant

–

–

degrees

Vibration Immunity (Running Mode)

See Figure 2

-xxxxL variant

0.12 ×

–

–

degrees

-xxxxH variant

–

–

degrees

Target 60-0, unless otherwise noted.

V

PROC

V= the processed analog signal of the sinusoidal magnetic input (per channel)

PROC

T

VPROC

T

TARGET

T= the period between successive similar (rising or falling) sensed magnetic edges

TARGET

Target

Valley

Tooth

V

PROC(BRP)

V

PROC(BOP)

V

PROC(pk-pk)

V

PROC(pk-pk)

V

SP

V

SP

V

SP

V=

SP(sep)

(B )

OP

(B )

RP

360º (degrees prime)

1