ATS616 datasheet(3/14 Pages) ALLEGRO

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Dynamic Self-Calibrating Peak-Detecting Differential

Hall Effect Gear Tooth Sensor IC

ATS616LSG

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

OPERATING CHARACTERISTICS over operating voltage and temperature range, unless otherwise noted

Characteristic

Symbol Test Condition

Min.

Typ.1

Max.

Units

ELECTRICAL CHARACTERISTICS

Supply Voltage2

VCC

Operating, TJ < 165C

3.5

–

Power-On State

POS

VCC = 0 → 5 V

–

HIGH

–

Undervoltage Lockout Threshold

VCC(UV) VCC = 0 → 5 V; VCC = 5 → 0 V

–

3.5

Output On Voltage

VOUT(SAT) IOUT = 20 mA

–

200

400

Supply Zener Clamp Voltage

VZsupply ICC = 16 mA, TA = 25°C

–

Output Zener Clamp Voltage

VZoutput IOUT = 3 mA, TA = 25°C

–

Supply Zener Current

IZsupply

VS = 28 V

–

Output Zener Current

IZoutput

VOUT = 30 V

–

Output Current Limit

IOUTM

VOUT = 12 V

Output Leakage Current

IOUTOFF VOUT = 24 V

–

μA

Supply Current

ICC

VCC > VCC(min)

Power-On Time

tPO

VCC > 5 V

–

500

μs

Output Rise Time3

RLOAD = 500 Ω, CS = 10 pF

–

0.3

5.0

μs

Output Fall Time3

RLOAD = 500 Ω, CS = 10 pF

–

0.2

5.0

μs

PERFORMANCE CHARACTERISTICS

Operating Air Gap Range

Operating within specification, Target Speed > 10 rpm

0.4

–

2.5

Operating Magnetic Flux Density

Differential4

BAG(p-p) Operating within specification, Target Speed > 10 rpm

–

Operating Frequency

–

10 000

Initial Calibration Cycle5

ncal

Output edges before calibration is completed, at fsig<100Hz

Edge

Calibration Mode Disable

ndis

Output falling edges for startup calibration to be complete

Edge

Relative Timing Accuracy, Sequential

Eθ

Target Speed = 1000 rpm, BAG(p-p) > 100 G

–

±0.5

±0.75



Target Speed = 1000 rpm, BAG(p-p) > 60 G

–

±1.5



Allowable User Induced Differential Offset4

∆BApp

Output switching only; may not meet data sheet specifica-

tions

–

±50

1Typical data is at VCC = 8 V and TA = 25°C. Performance may vary for individual units, within the specified maximum and minimum limits.

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

3 CS is the probe capacitance of the oscilloscope used to make the measurement.

4 10 G = 1 mT (millitesla), exactly.

5Non-uniform magnetic profiles may require additional edges before calibration is complete.

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