ATS672LSB

SELF-CALIBRATING TPOS GEAR-TOOTH SENSOR WITH 9-BIT SIGNAL CAPTURE

Preliminary – Subject to Change

Rev. 1.2 May 1, 2002

Page 3 of 12

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

Copyright © 1993, 1995 Allegro MicroSystems, Inc.

Limits

Characteristics

Symbol

Test Conditions

Min.

Typ.

Max.

Units

SWITCH POINT CHARACTERISTICS

Tooth Speed

0

8.0

kHz

Bandwidth

f-3db

40

kHz

Operate Point

Bop%

% of peak to peak referenced to tooth

signal, AG < Agmax;

+30

%

Release Point

Brp%

% of peak to peak referenced to tooth

signal, AG < Agmax;

+40

%

Over valley

HIGH

Output Polarity

ATS672LSB-LN (no TPOS)

ATS672LSB-LT (with TPOS)*

Over tooth

LOW

Over valley

LOW

Output Polarity

ATS672LSB-HN (no TPOS)*

ATS672LSB-HT (with TPOS)*

Over tooth

HIGH

* Restrictions on availability may apply.

Calibration

Initial Calibration

Number of rising mechanical edges for

accurate edge detection

3

Edges

AGC Disable

Number of rising mechanical edges

required to complete AGC calibration

3

Edges

Tooth Signal

Valley Signal

100%

Brp%

Bop%

Brp%

Bop%

Switchpoints