ATS682LSHTN-T Allegro Microsystems Inc, ATS682LSHTN-T Datasheet

IC HALL EFFECT SENSOR 4SIP

ATS682LSHTN-T

Manufacturer Part Number
ATS682LSHTN-T
Description
IC HALL EFFECT SENSOR 4SIP
Manufacturer
Allegro Microsystems Inc
Type
Linear Field Sensorr
Datasheet

Specifications of ATS682LSHTN-T

Package / Case
4-SIP
Sensing Range
120mV Trip, 120mV Release
Voltage - Supply
4 V ~ 24 V
Current - Supply
16.8mA
Output Type
Analog
Features
Gear Tooth Type
Operating Temperature
-40°C ~ 150°C
Bandwidth
40kHz
Supply Voltage Max
24V
Hall Effect Type
Gear Tooth
Operating Temperature Range
-40°C To +150°C
Supply Voltage Min
4V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output (max)
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
620-1327-2

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATS682LSHTN-T
Manufacturer:
ST
Quantity:
101
Features and Benefits
▪ True zero-speed operation
▪ Automatic Gain Control (AGC) for air gap independent
▪ Automatic Offset Adjustment (AOA) for signal processing
▪ Running-mode calibration for continuous optimization
▪ Precise duty cycle over operating temperature range
▪ Internal current regulator for two-wire operation
▪ Undervoltage lockout
▪ On-chip voltage regulator with wide operating voltage
▪ Single chip IC for high reliability
Package: 4-pin SIP (suffix SH)
Not to scale
ATS682-DS, Rev. 2
switchpoints
optimization
range and stability in the presence of a variety of complex
load impedances
Automatic Offset
Tracking
Control
DAC
Amplifier
Hall
AOA DAC
Peak Hold
Functional Block Diagram
Miniature, Two-Wire, True Zero Speed
Differential Peak-Detecting Sensor IC
AGC DAC
Gain Control
Description
The ATS682LSH is a Hall-effect integrated circuit and rare
earth pellet combination that provides a user-friendly solution
for true zero-speed digital gear-tooth sensing in two-wire
applications. This small package, with an optimized two-wire
leadframe, can be easily assembled and used in conjunction
with a wide variety of gear shapes and sizes.
The integrated circuit incorporates a dual-element Hall-effect
circuit and signal processing that switches in response to
differential magnetic signals created by ferrous gear teeth.
The circuitry contains a sophisticated digital circuit that
reduces magnet and system offsets, calibrates the gain for air
gap independent switchpoints and provides true zero-speed
operation.
Signal optimization occurs at power-up through the adjustment
of offset and gain and is and is maintained throughout operation
with the use of a running-mode calibration scheme. Running-
mode calibration provides immunity from environmental effects
such as micro-oscillations of the sensed target or sudden air
gap changes.
The regulated current output is configured for two-wire interface
circuitry and is ideally suited for obtaining speed information in
wheel speed applications. The Hall element spacing is optimized
for high resolution, small diameter targets. The package is lead
(Pb) free, with 100% matte tin lead frame plating.
Gain
Internal Regulator
Test Signals
ATS682LSH
VCC
GND
Test

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ATS682LSHTN-T Summary of contents

Page 1

Features and Benefits ▪ True zero-speed operation ▪ Automatic Gain Control (AGC) for air gap independent switchpoints ▪ Automatic Offset Adjustment (AOA) for signal processing optimization ▪ Running-mode calibration for continuous optimization ▪ Precise duty cycle over operating temperature range ...

Page 2

... ATS682LSH Selection Guide Part Number ATS682LSHTN-T 800 pieces per 13-in. reel ® *Contact Allegro for additional packing options Absolute Maximum Ratings Characteristic Supply Voltage Reverse Supply Voltage Operating Ambient Temperature Maximum Junction Temperature Storage Temperature Terminal List Pin-out Diagram Number Miniature, Two-Wire, True Zero Speed ...

Page 3

ATS682LSH OPERATING CHARACTERISTICS Characteristics Electrical Characteristics Supply Voltage 3 Undervoltage Lockout Supply Zener Clamp Voltage Supply Zener Current Supply Current Supply Current Ratio Reverse Battery Current 4 Power-On State Characteristics 5 Power-On Time 6 Power-On State Output Stage Output Slew ...

Page 4

ATS682LSH OPERATING CHARACTERISTICS Characteristics Digital-to-Analog Converter (DAC) Characteristics Allowable User-Induced Differential Offset Functional Characteristics Operating Signal Range 10 Minimum Operating Signal Allowable Signal Amplitude Variation Operational Air Gap Range Maximum Operational Air Gap Range 11 Duty Cycle Consecutive Duty Cycle ...

Page 5

ATS682LSH may require derating at maximum conditions, see Power Derating section Thermal Characteristics Characteristic Package Thermal Resistance *Additional thermal information available on the Allegro website 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 ...

Page 6

ATS682LSH Reference Target 60-0 (60 Tooth Target) Characteristics Symbol Outside Diameter D o Face Width F Angular Tooth Thickness t Angular Valley Thickness t v Tooth Whole Depth h t Material Miniature, Two-Wire, True Zero Speed Differential Peak-Detecting Sensor IC ...

Page 7

ATS682LSH Supply Current (Low) versus Supply Voltage 8.0 7.5 7.0 6.5 6.0 5.5 5 Suppply Current (High) versus Supply Voltage 16.8 16.3 15.8 15.3 14.8 14.3 13.8 13.3 12.8 12.3 11 ...

Page 8

ATS682LSH Miniature, Two-Wire, True Zero Speed Differential Peak-Detecting Sensor IC Duty Cycle versus Air Gap Allegro 60-0 Target at 1000 rpm 150°C 25°C -40°C 0 ...

Page 9

ATS682LSH Hall Technology This single-chip differential Hall-effect sensor IC possesses two Hall elements spaced at a fixed distance (1.5 mm), which simultaneously are affected by the magnetic profile of the target, and generate a differential internal analog voltage, V processed ...

Page 10

ATS682LSH Automatic Gain Control (AGC) AGC allows the device to operate with an optimal internal elec- trical signal, regardless of the air gap (within the operating signal range specification). During calibration, the device determines the peak-to-peak amplitude of the signal ...

Page 11

ATS682LSH Power Supply Protection The device contains an on-chip regulator and can operate over a wide V range. For devices that need to operate from an unregu- CC lated power supply, transient protection must be added externally. For applications using ...

Page 12

ATS682LSH Device Operation Power-On When power (V > device, a short period of time is required to activate the various portions of the IC. During this period, the ATS682 powers-on in the high current state ...

Page 13

ATS682LSH Characteristic Allowable Signal Amplitude Variation The colored area in figure 10 shows B area of allowable magnetic signal amplitude within which the IC will continue output switching. The output duty cycle is wholly dependent on the magnetic signature of ...

Page 14

ATS682LSH The device must be operated below the maximum junction tem- perature of the device, T (max). Under certain combinations of J peak conditions, reliable operation may require derating supplied power or improving the heat dissipation properties of the appli- ...

Page 15

ATS682LSH F 0.75 8.00±0.05 5.80±0.05 E1 1.70±0.10 4.00±0.10 5.00±0. 24.65±0.10 13.10±0.10 A 5.50±0.10 Miniature, Two-Wire, True Zero Speed Differential Peak-Detecting Sensor IC Package SH 4-Pin SIP 5.50±0.05 F 0.75 E Branded E2 Face 0.71±0.05 0.60±0.10 ...

Page 16

ATS682LSH Copyright ©2009, Allegro MicroSystems, Inc. The products described herein are manufactured under one or more of the following U.S. patents: 5,264,783; 5,389,889; 5,442,283; 5,517,112; 5,581,179; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; 6,091,239; 6,100,680; 6,232,768; 6,242,908; 6,265,865; 6,297,627; 6,525,531; 6,690,155; 6,693,419; ...

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