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Allegro Micro Systems
Allegro Micro Systems

ATS667LSG Datasheet Preview

ATS667LSG Datasheet

High Accuracy Gear Tooth Sensor

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ATS667LSG pdf
ATS667LSG
True Zero-Speed, High Accuracy Gear Tooth Sensor
Features and Benefits
www.dataOsphetiemt4iuz.ecdomrobustness against magnetic offset variation
Small signal lockout for immunity against vibration
Tight duty cycle and timing accuracy over full operating
temperature range
True zero-speed operation
Air gap independent switchpoints
Large operating air gaps achieved through use of gain
adjust and offset adjust circuitry
Defined power-on state (POS)
Wide operating voltage range
Digital output representing target profile
Single chip sensing IC for high reliability
Small mechanical size
Optimized Hall IC magnetic system
Fast start-up
Undervoltage lockout (UVLO)
Package: 4-pin SIP Module (suffix SG)
Description
The ATS667 is a true zero-speed gear tooth sensor consisting
of an optimized Hall IC-magnet configuration in a single
overmolded module. The unique IC and package design
provides a user-friendly solution for digital gear tooth sensing
applications. This small package can be easily assembled and
used in conjunction with gears of various shapes and sizes.
The sensor incorporates a dual element Hall IC that switches
in response to differential magnetic signals created by a
ferrous target. The IC contains a sophisticated compensating
circuit designed to eliminate the detrimental effects of magnet
and system offsets. Digital processing of the analog signal
provides zero-speed performance independent of air gap and
also dynamic adaptation of device performance to the typical
operating conditions found in automotive applications (reduced
vibration sensitivity). High-resolution peak detecting DACs
are used to set the adaptive switching thresholds of the device.
Hysteresis in the thresholds reduces the negative effects of any
anomalies in the magnetic signal associated with the targets
used in many automotive applications.
The ATS667 is optimized for transmission applications. It is
available in a lead (Pb) free 4-pin SIP module package with a
100% matte tin plated leadframe.
Not to scale
VCC
Functional Block Diagram
Voltage
Regulator
Hall
Amp
Offset
Adjust
Automatic
Gain
Control
VPROC
PDAC
NDAC
PThresh
Reference
Generator
NThresh
Threshold
Comparator
Threshold
Logic
TEST
ATS667-DS
GND
Current
Limit
Output
Transistor
VOUT



Allegro Micro Systems
Allegro Micro Systems

ATS667LSG Datasheet Preview

ATS667LSG Datasheet

High Accuracy Gear Tooth Sensor

No Preview Available !

ATS667LSG pdf
ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor
www.datasheet4u.com
Selection Guide
Part Number
Packing*
ATS667LSGTN-T
13-in. reel, 800 pieces/reel
*Contact Allegro® for additional packing options
Absolute Maximum Ratings
Characteristic
Supply Voltage
Reverse Supply Voltage
Reverse Supply Current
Reverse Output Voltage
Output Sink Current
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Symbol
VCC
VRCC
IRCC
VROUT
IOUT
TA
TJ(max)
Tstg
Notes
See Power Derating section
Range L
Rating
26.5
–18
–50
–0.5
25
–40 to 150
165
–65 to 170
Unit
V
V
mA
V
mA
ºC
ºC
ºC
Pin-out Diagram
1 234
Terminal List
Number
1
Name
VCC
2 VOUT
3 TEST
4 GND
Supply voltage
Device output
Tie to GND or float
Ground
Function
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2


Part Number ATS667LSG
Description High Accuracy Gear Tooth Sensor
Maker Allegro Micro Systems
Total Page 14 Pages
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