ATS625LSGTN Allegro Microsystems Inc, ATS625LSGTN Datasheet - Page 15

• Manufacturer Part Number: ATS625LSGTN
• Description: IC SENSOR GEAR TOOTH 4-SIP
• Manufacturer: Allegro Microsystems Inc
• Type: Special Purposer

Specifications of ATS625LSGTN

• Sensing Range: 60% Trip, 40% Release
• Voltage - Supply: 4 V ~ 24 V
• Current - Supply: 14mA
• Current - Output (max): 10mA
• Output Type: Digital, Open Collector
• Features: Gear Tooth Type
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 4-SIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ATS625LSG
Magnetic Profile
In order to establish the proper operating specification for a par-
ticular IC and target system, a systematic evaluation of the mag-
netic circuit should be performed. The first step is the generation
of a magnetic map of the target. By using a calibrated device, a
magnetic profile of the system is made. Figure 10 is a magnetic
map of the 60+2 reference target.
Figure 10. Magnetic Data for the Reference Target 60+2 with ATS625. In the top panel, the Signature Region appears in the center of the plot.
-100
-150
-200
-250
-300
-350
-400
300
250
200
150
100
800
700
600
500
400
300
200
100
-50
50
0
0
0
0.5
Air Gap Versus Magnetic Field, Reference Target 60+2 with ATS625
True Zero-Speed Low-Jitter High Accuracy
IC and Target Evaluation
Magnetic Map, Reference Target 60+2 with ATS625
30
1.0
60
1.5
Target Rotation (°)
AG (mm)
90
2.0
A single curve can be derived from this map data, and be used to
describe the peak-to-peak magnetic field strength versus the size
of the air gap, AG. This allows determination of the minimum
amount of magnetic flux density that guarantees operation of
the IC, B
allowable AG for the IC and target system. Referring to fig-
ure 11, a B
mately 2.5 mm.
120
IN
2.5
IN
, so the system designer can determine the maximum
of 60 G corresponds to a maximum AG of approxi-
150
3.0
Gear Tooth Sensor IC
180
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
(mm)
3.5
AG
0.75
1.00
1.50
2.00
2.50
3.00
15