ATS667LSGTN-T Allegro Microsystems Inc, ATS667LSGTN-T Datasheet

3-WIRE TRUE 0-SPEED HI ACCURACY GTS

ATS667LSGTN-T

Manufacturer Part Number
ATS667LSGTN-T
Description
3-WIRE TRUE 0-SPEED HI ACCURACY GTS
Manufacturer
Allegro Microsystems Inc
Type
Special Purposer
Datasheet

Specifications of ATS667LSGTN-T

Sensing Range
70% of Air Gap Trip, 30% of Air Gap Release
Voltage - Supply
4 V ~ 24 V
Current - Supply
12mA
Current - Output (max)
25mA
Output Type
Digital, Open Collector
Features
Gear Tooth Type
Operating Temperature
-40°C ~ 150°C
Package / Case
4-SIP
Operating Supply Voltage (min)
4V
Operating Supply Voltage (typ)
5/9/12/15/18V
Operating Supply Voltage (max)
24V
Output Current
20mA
Package Type
SIP Module(SG)
Pin Count
4
Mounting
Through Hole
Operating Temp Range
-40C to 150C
Operating Temperature Classification
Automotive
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
620-1328-2
Features and Benefits
▪ Optimized robustness against magnetic offset variation
▪ Small signal lockout for immunity against vibration
▪ Tight duty cycle and timing accuracy over full operating
▪ True zero-speed operation
▪ Air gap independent switchpoints
▪ Large operating air gaps achieved through use of gain
▪ 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 (suffix SG)
Not to scale
ATS667-DS, Rev. 5
temperature range
adjust and offset adjust circuitry
TEST
VCC
Amp
True Zero-Speed, High Accuracy Gear Tooth Sensor IC
Hall
Adjust
Offset
Regulator
Voltage
Automatic
Control
Functional Block Diagram
Gain
V
PROC
PDAC
NDAC
GND
Description
The ATS667 is a true zero-speed gear tooth sensor IC consisting
of an optimized Hall IC-rare earth pellet configuration in a
single overmolded package. 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 device incorporates a dual element Hall IC that switches
in response to differential magnetic signals created by a ferro-
magnetic 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 package with a 100%
matte tin plated leadframe.
Reference
Generator
PThresh
NThresh
Current
Limit
ATS667LSG
Comparator
Threshold
Threshold
Transistor
Output
Logic
VOUT

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ATS667LSGTN-T Summary of contents

Page 1

True Zero-Speed, High Accuracy Gear Tooth Sensor IC Features and Benefits ▪ Optimized robustness against magnetic offset variation ▪ Small signal lockout for immunity against vibration ▪ Tight duty cycle and timing accuracy over full operating temperature range ▪ True ...

Page 2

... ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC Selection Guide Part Number 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 ...

Page 3

ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC OPERATING CHARACTERISTICS Characteristics Electrical Characteristics Supply Voltage 2 Undervoltage Lockout (UVLO) Reverse Supply Current Supply Zener Clamp Voltage Supply Zener Current Supply Current Power-On State Characteristics Power-On State Power-On Time 3 ...

Page 4

ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC OPERATING CHARACTERISTICS (continued) Characteristics Switchpoint Characteristics Operational Speed Bandwidth Operate Point Release Point Running Mode Lockout Enable (LOE) Running Mode Lockout Release (LOR) 1 Typical data ...

Page 5

ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC 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 Reference ...

Page 6

ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC Supply Current (Off) versus Ambient Temperature - (°C) A Supply Current (On) versus Ambient Temperature ...

Page 7

ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance *Additional information is available on the Allegro website. Symbol Test Conditions* Single-sided PCB with copper limited ...

Page 8

ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC Hall Technology The ATS667 contains a single-chip differential Hall-effect sensor IC, a samarium cobalt pellet, and a flat ferrous pole piece (con- centrator). As shown in figure 1, the Hall IC ...

Page 9

ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC Continuous Update of Switchpoints Switchpoints are the threshold levels of the differential internal analog signal which the device changes output signal PROC state. The value ...

Page 10

ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC Start Mode Hysteresis This feature helps to ensure optimal self-calibration by rejecting electrical noise and low-amplitude target vibration during initialization. This prevents AGC from calibrating the IC on such spurious signals. ...

Page 11

ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC Undervoltage Lockout When the supply voltage falls below the undervoltage lockout voltage the device enters Reset, where the output CC(UV) state returns to the Power-On State (POS) until sufficient ...

Page 12

ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC The device must be operated below the maximum junction temperature of the device Under certain combinations of J(max) peak conditions, reliable operation may require derating supplied power or improving ...

Page 13

ATS667LSG 2.20 8.00±0.05 5.80±0.05 E1 1.70±0.10 4.70±0. 24.65±0.10 15.30±0.10 A 5.50±0.10 True Zero-Speed, High Accuracy Gear Tooth Sensor IC Package SG, 4-Pin SIP 5.50±0. Branded E2 Face A 4 0.71±0.05 0.60±0.10 0.40±0.10 1.0 REF 1.60±0.10 ...

Page 14

ATS667LSG True Zero-Speed, High Accuracy Gear Tooth Sensor IC Revision History Revision Rev. 5 Copyright ©2009-2011, Allegro MicroSystems, Inc. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such de par tures from the detail spec i ...

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