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參數(shù)資料
| 型號： | ATS622LSB |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | TRUE ZERO-SPEED HALL-EFFECT GEAR-TOOTH SENSOR |
| 中文描述： | 真正的零速度霍爾效應(yīng)齒輪齒傳感器 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 153K |
| 代理商： | ATS622LSB |
ATS622LSB
TRUE ZERO-SPEED,
GEAR-TOOTH SENSOR
9
www.allegromicro.com
APPLICATIONS INFORMATION — Continued
A
Dwg. MH-018-5 mm
A
2.2
α
TARGET FACE WIDTH, F
>2.2 SIN
2
α
Recommended evaluation technique.
The self-
calibrating feature of the ATS622LSB 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 repowered at each air gap
when gathering timing accuracy data.
The ATS622LSB is designed to minimize performance
variation (caused by the large air-gap variations resulting
from installation) by self-calibrating at power-on. These
functions should be tested using the procedures described
below.
Timing accuracy capabilities after correct self-calibra-
tion can be measured as follows:
1. Set the air gap to the desired value.
2. Power down and then power up the device.
3. Rotate the gear at the desired speed.
4. Wait for calibration to complete (128 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 operating tem-
perature range.
There is an internal update algorithm that will maintain
the correct duty cycle as air gap changes with temperature.
Large changes in air gap will require the part to reset (by
cycling power) to maintain the correct duty cycle.
Measurement of the effect of changing air gap after
power up:
1. Set the air gap to the desired value (nominal, for
example). Rotate the target at the desired speed. Apply
power to the module. Wait for 128 output pulses to occur.
Monitor output for correct switching and measure accu-
racy.
2. Change the air gap by
±
0.25 mm. Do not re-power the
module. Wait for update algorithm to finish adjusting
thresholds, typically 2 to 3 rotations on a 60-tooth gear.
Operation with fine-pitch gears.
For targets with a
circular pitch of less than 4mm, a performance improve-
ment can be observed by rotating the front face of the
sensor. This sensor rotation decreases the effective
sensor-to-sensor spacing and increases the capability of
detecting fine tooth or valley configurations, provided that
the Hall elements are not rotated beyond the width of the
target.
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| ATS625LSG | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:True Zero-Speed Low-Jitter High Accuracy Gear Tooth Sensor |
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| ATS625LSGTN-T | 功能描述:IC SENSOR GEAR TOOTH 4-SIP RoHS:是 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 |
| ATS625LSGTN-T3 | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:True Zero-Speed Low-Jitter High Accuracy Gear Tooth Sensor |
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