ATS605LSG
Dual Output Differential
Speed and Direction Sensor IC
DESCRIPTION
FEATURES AND BENEFITS
Two independent digital outputs representing the sensed The ATS605LSG provides a single IC solution to rotational
targets mechanical profile position sensing applications with a ferrous gear target.
The SG package incorporates a rare-earth pellet for ease of
Optional output with high-resolution position and direc-
manufacturing, consistent performance over temperature, and
tion detection information
enhanced reliability.
Air gap independent switchpoints
Three Hall elements are incorporated to create two independent
Integrated back-biasing magnetic circuit differential channels. These channels are processed by the
IC which contains a sophisticated digital circuit designed
Immunity to external magnetic interference
to eliminate the detrimental effects of magnet and system
Wide operating voltage range offsets. Hall differential signals are used to produce a highly
accurate speed output and, if desired, provide information on
Single chip IC for high reliability
the direction of rotation.
Robust test coverage and reliability using Scan and
Advanced calibration techniques are used to optimize signal
IDDQ test methodologies
offset and amplitude. This calibration, combined with the
Optional Double-Bandwidth configuration digital tracking of the signal, results in accurate switchpoints
over air gap, speed, and temperature. The open-drain outputs
PACKAGE: 4-PIN SIP (SUFFIX SG) provide voltage output signals which mirror the sensed targets
shape, with a phase separation between the two channels
proportionate to the size of the target teeth versus the Hall
element spacing. This sensor IC system is optimized for a
variety of applications requiring dual phase gear speed and
position signal information or simultaneous high-resolution
gear speed and direction information.
The ATS605 is offered in a lead (Pb) free 4-pin SIP package
with an integrated back-basing magnet with a 100% matte-
Not to scale
tin-plated leadframe.
Functional Block Diagram
VCC
REGULATOR
(Analog)
REGULATOR
OUT A
SPEED A
(Digital)
Current
MULTIPLEXED
DIRECTION
Limit
SIGNALS
OFFSET
Hall Amp AGC FILTER ADC
ADJUST
SYNCHRONOUS
SPEED B OUT B
DIGITAL
MULTIPLEXED Current
CONTROLLER
XOR SPEED
SIGNALS Limit
OFFSET
AGC FILTER
Hall Amp ADC
ADJUST
GND
ATS605LSG-DS, Rev. 3 June 20, 2018
MCO-0000216Dual Output Differential
ATS605LSG
Speed and Direction Sensor IC
SELECTION GUIDE
Operating Ambient Operational
Part Number Temperature Range Output Configuration Frequency Packing*
T , (C) (kHz)
A
ATS605LSGTN-S-T 40 to 150 Speed (OUTA); Speed (OUTB) 20 800 pieces per 13-in. reel
ATS605LSGTN-S-H-T 40 to 150 Speed (OUTA); Speed (OUTB) 40 800 pieces per 13-in. reel
ATS605LSGTN-F-T 40 to 150 Direction (OUTA); XOR Speed (OUTB) 20 800 pieces per 13-in. reel
ATS605LSGTN-F-H-T 40 to 150 Direction (OUTA); XOR Speed (OUTB) 40 800 pieces per 13-in. reel
Inverse Direction (OUTA);
ATS605LSGTN-R-T 40 to 150 20 800 pieces per 13-in. reel
XOR Speed (OUTB)
Inverse Direction (OUTA);
ATS605LSGTN-R-H-T 40 to 150 40 800 pieces per 13-in. reel
XOR Speed (OUTB)
* Contact Allegro for additional packing options.
ABSOLUTE MAXIMUM RATINGS
Characteristic Symbol Notes Rating Unit
Supply Voltage V Refer to Power Derating section 28 V
CC
Reverse Supply Voltage V 18 V
RCC
Reverse Supply Current I 50 mA
RCC
Reverse Output Voltage V 0.5 V
ROUT
Forward Output Voltage V 28 V
OUT
Internal current limiting is intended to protect the device from
Output Sink Current I output short circuits, but is not intended for continuous opera- 25 mA
OUTSINK
tion.
Operating Ambient Temperature T L temperature range 40 to 150 C
A
Maximum Junction Temperature T 165 C
J(max)
Storage Temperature T 65 to 170 C
stg
Pinout Diagram Terminal List Table
Number Name Descritpion
1 VCC Supply voltage
Option [-S]: Speed (OUTB)
Branded
2 OUTB Option [-F]: XOR Speed
Face
Option [-R]: XOR Speed
Option [-S]: Speed (OUTA)
3 OUTA Option [-F]: Default Direction
Option [-R]: Inverse Direction
4 GND Ground
1 2 3 4
2
Allegro MicroSystems, LLC
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com