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Allegro Micro Systems
Allegro Micro Systems

ATS682LSH Datasheet Preview

ATS682LSH Datasheet

True Zero Speed Differential Peak-Detecting Sensor

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ATS682LSH pdf
ATS682LSH
Miniature, Two-Wire, True Zero Speed
Differential Peak-Detecting Sensor
Features and Benefits
www.dataTsrhueeetz4eur.oc-osmpeed 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
Internal current regulator for two-wire operation
Undervoltage lockout
On-chip voltage regulator with wide operating voltage
range and stability in the presence of a variety of complex
load impedances
Single chip IC for high reliability
Package: 4-pin SIP Module (suffix SH)
Not to scale
Description
The ATS682LSH is a Hall-effect sensing integrated circuit
and magnet 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
sensor 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.
Functional Block Diagram
Hall
Amplifier
Gain
VCC
Automatic Offset
Control
AOA DAC
Tracking
DAC
Peak Hold
AGC DAC
Gain Control
ATS682-DS
Internal Regulator
Test Signals
GND
Test



Allegro Micro Systems
Allegro Micro Systems

ATS682LSH Datasheet Preview

ATS682LSH Datasheet

True Zero Speed Differential Peak-Detecting Sensor

No Preview Available !

ATS682LSH pdf
ATS682LSH
Miniature, Two-Wire, True Zero Speed
Differential Peak-Detecting Sensor
www.datasheet4u.com
Selection Guide
Part Number
Packing*
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
Symbol
VCC
VRCC
TA
TJ(max)
Tstg
Notes
Refer to Power Derating curve
Range L
Rating
28
–18
–40 to 150
165
–65 to 170
Unit
V
V
ºC
ºC
ºC
Pin-out Diagram
12 3 4
Terminal List
Number
Name
1 VCC
2 NC
3 TEST
4 GND
Function
Connects power supply to chip
No connection
Test (float or tie to ground)
Ground terminal
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2


Part Number ATS682LSH
Description True Zero Speed Differential Peak-Detecting Sensor
Maker Allegro Micro Systems
Total Page 16 Pages
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Allegro Micro Systems
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