ATS693LSG datasheet(4/15 Pages) ALLEGRO

4 / 15 page

Three-Wire, Differential, Vibration Resistant

Sensor IC with Speed and Direction Output

ATS693LSG

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

Characteristic

Symbol

Test Conditions

Min.

Typ.1

Max.

Unit

Performance Characteristics

Air Gap Range

Using Allegro Reference Target 60-0

0.5

–

2.75

Vibration Immunity (Startup)

errVIB(SU)

TTARGET

–

deg.

Vibration Immunity (Running Mode)

errVIB

TTARGET

–

deg.

Input Magnetic Characteristics

Allowable Differential Sequential

Signal Variation7

BSEQ(n+1) /

BSEQ(n)

Signal cycle-to-cycle variation (see figure 2)

0.6

–

Calibration

First Direction Output Pulse8

Amount of target rotation

(constant direction) following

power-on until first electrical

output pulse of either tw(FWD)

or tw(REV), see figure 1

AG ≥ 0.5 mm

AG < 2.25 mm

–

2 ×

TTARGET

<3 ×

TTARGET

deg.

AG ≥ 2.25 mm

AG ≤ 2.75 mm

–

2.5 ×

TTARGET

<4 ×

TTARGET

deg.

First Direction Pulse Output Following

Direction Change

NCD

1 ×

TTARGET

2 ×

TTARGET

<3 ×

TTARGET

deg.

First Direction Pulse Output Following

Running Mode Vibration

1 ×

TTARGET

2 ×

TTARGET

<3 ×

TTARGET

deg.

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

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

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

Sustained voltages beyond the clamp voltage may cause permanent damage to the IC.

Pulse duration measured at a threshold of VPULLUP/ 2.

Maximums of both Operating Frequency (Reverse Rotation) and Operating Frequency (Non-Direction Pulses) are determined by satisfactory separation of output pulses:

VOUT(HIGH) of tw(FWD)(min). If the customer can resolve shorter high-state durations, maximum fFWD, fREV, and fND may be increased.

If the minimum signal phase separation is not maintained during or after a signal variation event, output may be blanked or non-direction pulses may occur. A signal varia-

tion event during power-on may increase the quantity of edges required to get correct direction pulses.

Power-on frequency ≤ 200 Hz. Higher power-on frequencies may require more input magnetic cycles until directional output pulses are achieved.

OPERATING CHARACTERISTICS (continued): valid throughout full operating and temperature ranges; using Reference

Target 60-0; unless otherwise specified

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