ATS612LSG Allegro MicroSystems, Inc., ATS612LSG Datasheet

no-image

ATS612LSG

Manufacturer Part Number
ATS612LSG
Description
Ats612lsg Dynamic Self-calibrating Peak-detecting Differential Hall-effect Gear-tooth Sensors
Manufacturer
Allegro MicroSystems, Inc.
Datasheet
Supply Voltage, V
Reverse Supply Voltage, V
Output OFF Voltage, V
Continuous Output Current, I
Reverse Output Current, I
Package Power Dissipation, P
Operating Temperature Range,
Storage Temperature, T
Maximum Junction Temperature,
ATS612G-DS Rev. 0a
ABSOLUTE MAXIMUM RATINGS
T
J
.................................................. 165 C
Pin 1: Supply
T
Pin 2: Output
A
Pin 3: Capacitor
.............................. –40 C to +150 C
Pin 4: Ground
CC
..............................…. 24 V
OUT
S
ROUT
...................... +170 C
RCC
......................... 24 V
OUT
D
............... 50 mA
................. –16 V
...... See Graph
............ 25 mA
ATS612LSG
FEATURES AND BENEFITS
that uses automatic gain control to provide extremely accurate gear
edge detection down to low operating speeds. Each sensor module
consists of an over-molded package, which holds together a
samarium-cobalt magnet, a pole piece and a differential open-
collector Hall IC that has been optimized to the magnetic circuit.
This small package can be easily assembled and used in
conjunction with a wide variety of gear shapes and sizes.
response to differential magnetic signals created by ferrous targets.
The sophisticated processing circuitry contains a 5-bit D/A
converter that self-calibrates (normalizes) the internal gain of the
device to minimize the effect of air-gap variations. The patented
peak-detecting filter circuit eliminates magnet and system offsets
and has the ability to discriminate relatively fast changes such as
those caused by tilt, gear wobble, and other eccentricities, yet
provides stable operation to extremely low RPM.
and timing information using gear-tooth-based configurations. The
ATS612 is particularly suited to those applications that require
extremely accurate duty cycle control or accurate edge detection
such as in automotive crankshaft applications. The lower vibration
sensitivity also makes this device extremely useful for transmission
speed sensing.
The ATS612LSG gear-tooth sensor is a peak-detecting device
The sensor incorporates a dual-element Hall IC that switches in
This sensor system is ideal for use in gathering speed, position,
Fully Optimized Differential Digital Gear-Tooth Sensor
Single-Chip Sensing IC for High Reliability
Digital Output Representing Target Profile
Extremely Low Timing Accuracy Drift with Temperature
Large Operating Air Gaps
Small Mechanical Size
Optimized Magnetic Circuit
Patented Peak-Detecting Filter:
80 µs Typical Power-On Time
<10 RPM Operation (single-tooth target)
Uses Small Value Ceramic Capacitors
Under-Voltage Lockout
Wide Operating Voltage Range
Defined Power-On State
HALL-EFFECT GEAR-TOOTH SENSOR
PEAK-DETECTING, DIFFERENTIAL
DYNAMIC, SELF-CALIBRATING,

Related parts for ATS612LSG

ATS612LSG Summary of contents

Page 1

... ATS612LSG DYNAMIC, SELF-CALIBRATING, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSOR The ATS612LSG gear-tooth sensor is a peak-detecting device that uses automatic gain control to provide extremely accurate gear edge detection down to low operating speeds. Each sensor module consists of an over-molded package, which holds together a samarium-cobalt magnet, a pole piece and a differential open- collector Hall IC that has been optimized to the magnetic circuit ...

Page 2

... SENSOR ELECTRICAL OUTPUT PROFILE NOTE: Output polarity is dependent upon sensor orientation and target rotation. See Output Polarity description on page 9. Page ATS612LSG Timing Diagrams 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 2001, 2003 Allegro MicroSystems, Inc. ...

Page 3

... Low Output Voltage Supply Zener Clamp Voltage Output Current Limit Output Leakage Current Supply Current Power-On Delay Output Rise Time Output Fall Time NOTES: Typical data shutdown voltage, V CC(SD) Page ATS612LSG Symbol Test Condition V Operating, T < 165 POS ...

Page 4

... Calibration Mode Disable Relative Timing Accuracy, Sequential Allowable User Induced Differential Offset * Non-uniform magnetic profiles may require additional output pulses before calibration is complete. Page ATS612LSG Symbol Test Condition Operating within specification, AG Target Speed > 20 RPM Output edges before which n cal ...

Page 5

... Thickness 6 Sequential Tooth Width 3 Sequential Valley Width 3 Sequential Valley Depth 3 Signature Tooth Width 9 Material Low carbon steel Page ATS612LSG 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 2001, 2003 Allegro MicroSystems, Inc. ...

Page 6

... × 48.5 mW × 165°C/W = 8.0° × 25°C + 8.0°C = 33.0° Maximum Allowable Power Dissipation Calculation for ATS612LSG: Assume 150 °C A A(max 165°C J(max) Icc = ( ON(max) OFF(max ...

Page 7

... The peak signal of every tooth and valley is detected by the filter and is used to provide an instant reference for the operate and release point Page ATS612LSG comparator. In this manner, the thresholds are adapted and referenced to individual signal peaks and valleys, providing immunity to zero line variation from installation ...

Page 8

... The differential configuration cancels the effects of the back-biased field and avoids many of the issues presented by the single Hall element. NOTE mT, exactly. Page ATS612LSG 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 2001, 2003 Allegro MicroSystems, Inc. ...

Page 9

... LOW transition. Under-Voltage Lockout. When the supply voltage is below the minimum operating voltage (V Page ATS612LSG device is OFF and stays OFF irrespective of the state of the magnetic field. This prevents false signals, which may be caused by under-voltage conditions (especially during turn on), from appearing at the output. ...

Page 10

... DYNAMIC, SELF-CALIBRATING, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR TOOTH SENSOR TYPICAL ELECTRICAL CHARACTERISTICS Output Output Off 5 - AMBIENT TEMPERATURE IN 250 225 200 175 150 -40 Page ATS612LSG 120 160 200 OUT(SAT OUT 20mA ...

Page 11

... C 0.5 0 -0.5 -1 -1.5 0 0.5 1 1.5 AIR GAP IN MILLIMETERS Rising signature tooth edge 10 RPM 1 150 C 0.5 0 -0.5 -1 -1.5 0 0.5 1 1.5 AIR GAP IN MILLIMETERS Page ATS612LSG 0.75 0.5 0.25 0 -0.25 -0.5 -0. 0.75 0.5 0.25 0 -0.25 -0.5 -0. Falling signature tooth edge 1000 RPM o - 150 C 0.5 1 1.5 2 AIR GAP IN MILLIMETERS ...

Page 12

... C 0.5 o 150 C 0.25 0 -0.25 -0.5 -0.75 0 0.5 1 1.5 AIR GAP IN MILLIMETERS Rising sequential tooth edge 10 RPM 0. 0.5 o 150 C 0.25 0 -0.25 -0.5 -0.75 0 0.5 1 1.5 AIR GAP IN MILLIMETERS Page ATS612LSG 0.75 0.5 0.25 0 -0.25 -0.5 -0. 2.5 3 0.75 0.5 0.25 0 -0.25 -0.5 -0. Falling sequential tooth edge 1000 RPM o - 150 C 0.5 1 1.5 2 2.5 AIR GAP IN MILLIMETERS ...

Page 13

... Please contact Allegro MicroSystems for EMC performance. Test Name ESD – Human Body Model ESD – Machine Model Conducted Transients Direct RF Injection Bulk Current Injection TEM Cell Page ATS612LSG MECHANICAL INFORMATION Material Thermoset Epoxy 2 Solder, Tin / Lead 90/10 Reference Specification AEC-Q100-002 AEC-Q100-003 ...

Page 14

... DYNAMIC, SELF-CALIBRATING, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR TOOTH SENSOR NOTE: Metallic protrusion may be present, electrically connected to substrate and pin 4 (ground). Page ATS612LSG PACKAGE DRAWING For Reference Only 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 2001, 2003 Allegro MicroSystems, Inc. ...

Page 15

... DYNAMIC, SELF-CALIBRATING, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR TOOTH SENSOR Page ATS612LSG The products described herein are manufactured under one or more of the following U.S. patents: 5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,719,130; 5,917,320; and other patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the design of its products ...

Related keywords