Three-Wire True Zero-Speed Differential Peak-Detecting

Sensor IC with Continuous Calibration

ATS468

4

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

Characteristics

Symbol

Test Conditions

Min.

Typ.

Max.

Performance Characteristics

AG

0.5

–

3.5

mm

Operating Magnetic Signal Range

Peak-to-peak of differential signal; operation

within specification

20

–

1200

G

See figure 5

–

120

–

mV

3

–

10

G

See figure 5

–

120

–

mV

3

–

10

G

Operating Frequency

0

–

10

kHz

Analog Signal Bandwidth

BW

Equivalent to f = –3 dB

20

–

–

kHz

Output rising edges before calibration is

–

–

3

edge

Output Duty Cycle Precision

–

–

±15

%

Output Period Precision

Using pure sine magnetic signal with

–

0.3

–

%

Allowable User Induced Differential

Offset

–60

–

60

G

1

1 G (gauss) = 0.1 mT (millitesla).

2

AG is dependent on the available magnetic field. The available field is dependent on target geometry and material,and should be independently characterized. The field

available from the reference target is given in the reference target parameter section of the datasheet.

3

Values in G are based on device in maximum gain setting.

4

Non-uniform magnetic profiles may require additional output pulses before calibration is complete.

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