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부품번호 | ATS632LSA 기능 |
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기능 | ZERO-SPEED/ SELF-CALIBRATING/ NON-ORIENTED/ HALL-EFFECT GEAR-TOOTH SENSOR | ||
제조업체 | Allegro MicroSystems | ||
로고 | |||
ATS632LSA
HALL-EFFECT
GEAR-TOOTH SENSOR
SUBASSEMBLY
ATS632LSA
ZERO-SPEED, SELF-CALIBRATING,
NON-ORIENTED, HALL-EFFECT GEAR-TOOTH SENSOR
1
2
3
4
The ATS632LSA gear-tooth sensor is an optimized Hall-effect IC/
magnet combination that provides extremely accurate tooth edge
detection when used with large-pitch targets. The sensor subassembly
consists of a high-temperature plastic shell that holds together a
compound samarium-cobalt magnet and a single-element self-calibrat-
ing Hall-effect IC that has been optimized to the magnetic circuit. This
small package, with its non-oriented operation, can be easily as-
sembled on a PC board for complete protection and used in conjunc-
tion with a number of gear configurations.
Pin 1 = Supply
Pin 2 = Output
Pin 3 = Test Point
Pin 4 = Ground
Dwg. AH-006-2
PRELIMINARY INFORMATION
(subject to change without notice)
December 2, 1998
The gear sensing technology used for this sensor subassembly is
Hall-effect based. The sensor incorporates a single-element Hall IC
that switches in response to absolute magnetic signals created by a
ferrous target. The digital output is LOW over a tooth and HIGH over a
valley. The sophisticated processing circuitry contains self-calibrating
6-bit A/D circuitry that adapts the thresholds to the peak-to-peak
signals to minimize the effects of variation in application air gap on
switch-point timing accuracy. The effects of system and device offsets
are minimized by using active offset cancellation circuitry. The digital
algorithm provides zero-speed detection capabilities without the
associated running jitter inherent in classical digital solutions.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC ......................... 24 V*
Reverse Supply Voltage, VRCC ........ -24 V
Output OFF Voltage, VOUT ................. 25 V
Output Current, IOUT .. Internally Limited
Reverse Output Current, IOUT ........ 50 mA
Package Power Dissipation,
PD .................................... See Graph
Operating Temperature Range,
TA ............................ -40°C to +150°C
Storage Temperature, TS ............ +170°C
* Operation at increased supply voltages with
external circuitry is described in Applications
Information.
This sensor system is ideal for use in gathering speed, position
and profile information of ferrous objects. They are particularly suited
to large tooth/valley sensing applications where accurate timing
accuracy is a desired feature. For applications requiring the sensing of
fine-pitch gears, the ATS610LSA and ATS611LSB are recommended.
continued next page…
Always order by complete part number, e.g., ATS632LSA .
ATS632LSA
HALL-EFFECT
GEAR-TOOTH SENSOR
SUBASSEMBLY
OPERATION over operating voltage and temperature range with reference target (unless oth-
erwise specified).
Limits
Characteristic
Symbol Test Conditions
Min.
Typ.
Max.
Units
Operating Air Gap Range AG Operating,
Target Speed > 20 RPM
0.3 –
2.5
mm
Output Polarity
– Operating, Over Tooth
Low Low
Low
–
Operating, Over Valley
High
High
High
–
Timing Accuracy
tθ Target Speed < 3500 RPM,
0.3 mm ≤ AG ≤ 2.0 mm
–
±0.25
±0.50
°
TARGET DESIGN CRITERIA
Characteristic
Valley Depth
Valley Width
Tooth Width
Thickness
Eccentricity
Symbol
ht
(PC - T)
T
F
–
Description
Timing accuracy may change
Min.
–
–
–
–
–
Limits
Typ.
Max.
5.0 –
5.0 –
5.0 –
5.0 –
– ±0.25
Units
mm
mm
mm
mm
mm
TARGET DIMENSIONS
Type
Reference Target
Characterization Target #1
Characterization Target #2
Diameter
(Do)
84 mm
84 mm
35 mm
Thickness
(F)
16 mm
16 mm
7 mm
Tooth Width
(T)
9 mm
Valley Width
(PC - T)
13 mm
1 tooth, 180°
1 tooth, 180°
NOTE: Timing accuracy data is taken by recalibrating the unit at each air gap.
Valley Depth
(ht)
5 mm
5 mm
6 mm
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
4페이지 ATS632LSA
HALL-EFFECT
GEAR-TOOTH SENSOR
SUBASSEMBLY
CRITERIA FOR DEVICE QUALIFICATION
All Allegro sensors are subjected to stringent qualification requirements prior to being released to production. To
become qualified, except for the destructive ESD tests, no failures are permitted.
Qualification Test
Test Method and
Test Conditions
Test Length
Samples
Per Lot
Comments
Temperature Humidity
Bias Life
Bias Life
(Surge Operating Life)
Autoclave, Unbiased
High-Temperature
(Bake) Storage Life
Temperature Cycle
JESD22-A101,
TA = 85°C, RH = 85%
JESD22-A108,
TA = 150°C, TJ = 165°C
JESD22-A108,
TA = 175°C, TJ = 190°C
JESD22-A102,
TA = 121°C, 15 psig
JESD22-A103,
TA = 170°C
JESD22-A104
1000 hrs
1000 hrs
168 hrs
96 hrs
1000 hrs
1000 cycles
48
48
48
48
48
48
Device biased for
minimum power
-55°C to +150°C
ESD,
Human Body Model
CDF-AEC-Q100-002
Pre/Post
Reading
3 per
test
Test to failure
Pin 3 > 1.5 kV
All leads > 8 kV
APPLICATIONS INFORMATION
Recommended Evaluation Technique. The self-
calibrating feature of the ATS632LSA requires that a
special evaluation technique be used to measure its high-
accuracy performance capabilities. Installation inaccura-
cies are calibrated out at power on; hence, it is extremely
important that the device be re-powered at each air gap
when gathering timing accuracy data.
Self-Calibrating Functions. These subassemblies are
designed to minimize performance variation caused by
the large air gap variations resulting from installation by
self-calibrating at power-on. They are also designed to
minimize performance variation caused by the smaller,
slower air gap changes resulting from temperature
change and gear run-out during continuous operation by
updating the self-calibration periodically (after every 64
output pulses) if necessary. These two functions should
be tested using the following procedure.
1. Set the air gap to the desired value.
2. Power down and then power on the device.
3. Rotate the target at the desired speed.
4. Wait for calibration to complete (16 output pulses to
occur).
5. Monitor output for correct switching and measure
accuracy.
6. Repeat the above for multiple air gaps within the
operating range of the device.
7. This can be repeated over the entire temperature
range.
7페이지 | |||
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부품번호 | 상세설명 및 기능 | 제조사 |
ATS632LSA | ZERO-SPEED/ SELF-CALIBRATING/ NON-ORIENTED/ HALL-EFFECT GEAR-TOOTH SENSOR | Allegro MicroSystems |
ATS632LSA | TRUE ZERO-SPEED HALL-EFFECT GEAR-TOOTH SENSOR | Allegro MicroSystems |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |