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參數(shù)資料
| 型號： | ATS631LSA |
| 元件分類： | 速度傳感器和接近開關(guān) |
| 英文描述： | PROXIMITY SENSOR-HALL EFFECT, 0.3-2.5mm, 0.20-0.40V, ROUND, THROUGH HOLE MOUNT |
| 文件頁數(shù)： | 11/12頁 |
| 文件大?。?/td> | 115K |
| 代理商： | ATS631LSA |
ATS630LSA AND ATS631LSA
ZERO-SPEED, SELF-CALIBRATING, HALL-EFFECT
GEAR-TOOTH TRUE POWER-ON SENSORS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
continued next page…
state. If an incorrect state is detected, then the
maximum air gap requirement is too large for this
sensor.
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.
Measurement of the effect of changing air gap after power
on:
1.
Set the air gap to the desired value (nominal, for
example). Rotate the target at the desired speed.
Apply power to the subassembly. Wait for 16 output
pulses to occur. Monitor output for correct switching
and measure accuracy.
2.
Change the air gap by
± 0.25 mm. Do not re-power
subassembly. Wait for 64 output pulses to occur.
Monitor the output for correct switching and measure
accuracy.
Device Switch Points. The device switch points are
referenced to the peak-to-peak values of the gain-ad-
justed signal. The comparator thresholds have been
chosen to provide timing accuracy, as well as limited
immunity from mis-detection caused by short valley
conditions or by gear run-out.
APPLICATIONS INFORMATION — Continued
Gear Design Criteria.* The system was designed to
work correctly with minimum valley depths of 5 mm and
minimum valley widths of 13 mm. As the valley depth
decreases, the valley field rises above the open-circuit
value of the magnetic circuit when the sensor is at mini-
mum air gap. The same is true when the valley width
decreases. In both cases, the metal mass from the valley
bottom or side walls provides an interference at minimum
air gap and will provide a signal that may be interpreted
as a tooth upon power on. It is important to note that this
anomaly will normally only affect the power-on state of the
device and the self-calibration circuitry will null this
baseline shift when the device is in running mode.
* In application, the terms “gear” and “target” are often
interchanged. However, “gear” is preferred when motion
is transferred.
Signal-Timing Accuracy. Timing accuracy is improved
with larger gear diameters. The magnetic field profile has
a defined spread that narrows in degrees as the target
diameter increases. The slope of this magnetic profile
also changes with air gap. For highest accuracy, targets
greater than 100 mm diameter should be used.
Operation with Fine-Pitch Gears. While the TPOS
function may not work correctly at power on, the self-
calibration routines allow the detection of fine-pitch gears
once the target is rotating. The major issue in these
applications is the impact of gear run-out on the baseline
of the magnetic field. Excessive run-out may result in
tooth edges not being detected.
Signal Duty Cycle.
For regular tooth geometries,
precise duty cycle is maintained over the operating
air gap and temperature range due to the good
symmetry of the magnetic switch points of the de-
vice.
Output. The output of the subassembly is a short-circuit-
protected open-collector stage capable of sinking 20 mA.
An external pull-up (resistor) to a supply voltage of not
more than 24 V must be supplied.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ATS631LSB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| ATS632LSA | 制造商:Allegro MicroSystems 功能描述:Zero-Speed, Self-Calibrating, Non-Oriented, Hall-Effect Gear-Tooth Sensor Module |
| ATS632LSC | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:ZERO-SPEED, SELF-CALIBRATING, NON-ORIENTED, HALL-EFFECT GEAR-TOOTH SENSOR |
| ATS635LSB-FP | 功能描述:IC SENSOR GEAR TOOTH 4-SIP RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉(zhuǎn) 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數(shù)字式，PWM，8.5 位串行 特點:可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| ATS635LSE | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Programmable Back Biased Hall-Effect Switch with TPOS Functionality |
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