ATS667LSG datasheet(3/14 Pages) ALLEGRO

3 / 14 page

True Zero-Speed, High Accuracy Gear Tooth Sensor IC

ATS667LSG

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

OPERATING CHARACTERISTICS Valid over operating voltage and temperature ranges; unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ.1

Max.

Unit

Electrical Characteristics

Supply Voltage2

VCC

Operating, TJ < TJ(max)

4.0

–

Undervoltage Lockout (UVLO)

VCC(UV)

–

3.5

3.95

Reverse Supply Current

IRCC

VCC = –18 V

–

– 10

Supply Zener Clamp Voltage

ICC = 15 mA, TA = 25 °C

26.5

–

Supply Zener Current

TA = 25°C, TJ < TJ(max), continuous, VZ =26.5 V

–

Supply Current

ICC

Output off

Output on

Power-On State Characteristics

Power-On State

POS

Connected as in figure 6

–

High

–

Power-On Time3

tPO

SROT < 200 rpm; VCC > VCC(min)

–

OUTPUT STAGE

Low Output Voltage

VOUT(SAT) IOUT = 10 mA, Output = on

–

100

250

Output Zener Clamp Voltage

VZOUT

IOUT = 3 mA, TA = 25°C

26.5

–

Output Current Limit

IOUT(LIM)

VOUT = 12 V, TJ < TJ(max)

Output Leakage Current

IOUT(OFF)

Output = off, VOUT = 24 V

–

μA

Output Rise Time

RPULLUP = 1 kΩ, CL = 4.7 nF, VPULLUP = 12 V,

10% to 90%, connected as in figure 6

–

μs

Output Fall Time

RPULLUP = 1 kΩ, CL = 4.7 nF, VPULLUP = 12 V,

90% to 10%, connected as in figure 6

–

0.6

μs

D-to- A Converter (DAC) Characteristics

Allowable User Induced Differential

Offset4,5

BDIFFEXT

User induced differential offset

–

±60

–

Calibration

Initial Calibration6

CALI

Possible reduced edge detection accuracy, duty

cycle not guaranteed

–

edge

Update Method

Running mode operation, bounded for

decreasing AG, unlimited for increasing AG

–

Continuous

––

Operating Characteristics (with Allegro 60-0 Reference Target)

Operational Air Gap Range7

AGOP

Repeatability and duty cycle within specification

0.5

–

2.5

Maximum Operational Air Gap Range

AGOPMAX Output switching only (no missing edges)

–

3.1

Relative Repeatability8

TθE

100 Gpk-pk ideal sinusoidal signal, TA=150°C,

SROT=1000 rpm (f=1000Hz)

–

0.12

–

deg.

Maximum Single Outward Sudden Air

Gap Change9

ΔAGMAX

Percentage of most recent AGpk-pk, single

instantaneous air gap increase, f < 500 Hz,

VPROC(pk-pk) > VLOE after sudden AG change

–

Duty Cycle

Wobble < 0.5 mm, AGOP < AGOPMAX, direction

of target rotation pin 1 to pin 4

Continued on the next page…

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