ATS682LSH datasheet(4/16 Pages) ALLEGRO

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Digital-to-Analog Converter (DAC) Characteristics

Allowable User-Induced Differential

Offset

ΔBDIFFEXT Operation within specification

–

± 60

–

Functional Characteristics

Operating Signal Range10

BDIFF

Differential signal, measured peak-to-peak;

operation within specification

–

1000

Minimum Operating Signal

BDIFFOP(MIN)

Output switching (no missed edges); duty cycle

not guaranteed

–

Allowable Signal Amplitude Variation

BSOA

See Functional Description section

–

Operational Air Gap Range

Using Reference Target 60-0, duty cycle within

specification

0.5

–

2.75

Maximum Operational Air Gap Range

AGOP(MAX)

Using Reference Target 60-0, output switching

(no missed edges); duty cycle not guaranteed

–

3.00

Duty Cycle11

AG within specification

–

Consecutive Duty Cycle Variation12

errD

AG = 1.5 mm

–

±1.5

–

1Typical values are at TA = 25°C and VCC = 12 V. Performance may vary for individual units, within the specified maximum and minimum limits.

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

3Maximum voltage must be adjusted for power dissipation and junction temperature; see Power Derating section.

4Negative current is defined as conventional current coming out of (sourced from) the specified device terminal.

5Power-On Time includes the time required to complete the internal automatic offset adjust after which the DAC is ready for peak acquisition.

6See Device Operation section.

7dI is the difference between 10% of ICC(LOW) and 90% of ICC(HIGH), and dt is the time period between those two points.

8CLOAD is the probe capacitance of the oscilloscope used to make the measurement.

9Refer to Functional Description section for performance over input magnetic frequency.

10AG 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.

11Target rotation from pin 4 to pin 1.

12Consecutive Duty Cycle Variation represents the difference between consecutive duty cycles, D(n) – D(n–1); mean ± 3 sigma.

OPERATING CHARACTERISTICS (continued) Valid at VCC and TA within specification; unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ.1

Max.

Unit2

Miniature, Two-Wire, True Zero Speed

Differential Peak-Detecting Sensor IC

ATS682LSH

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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