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參數(shù)資料
| 型號： | ATS625LSGTN |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | True Zero-Speed Low-Jitter High Accuracy Gear Tooth Sensor |
| 中文描述： | 真零高速低抖動高精度齒輪齒傳感器 |
| 文件頁數(shù)： | 14/21頁 |
| 文件大?。?/td> | 625K |
| 代理商： | ATS625LSGTN |
14
ATS625LSG-DS, Rev. 1
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
True Zero-Speed Low-Jitter High Accuracy Gear Tooth Sensor
ATS625LSG
SWITCHPOINTS
Switchpoints in the ATS625 are a percentage of the amplitude of
the signal, V
PROC
, after normalization with AGC. In operation,
the actual switching levels are determined dynamically. Two
DACs track the peaks of V
PROC
(see the
Update
subsection).
The switching thresholds are established at 40% and 60% of the
values held in the two DACs. The proximity of the thresholds
near the 50% level ensures the most accurate and consistent
switching, because it is where the slope of V
PROC
is steepest and
least affected by air gap variation.
The low hysteresis, 20%, provides high performance over vari-
ous air gaps and immunity to false switching on noise, vibration,
backlash, or other transient events.
Figure 8 graphically demonstrates the establishment of the
switching threshold levels.Because the thresholds are established
dynamically as a percentage of the peak-to-peak signal, the
effect of a baseline shift is minimized. As a result, the effects of
offsets induced by tilted or off-center installation are minimized.
UPDATE
The ATS625 incorporates an algorithm that continuously moni-
tors the system and updates the switching thresholds accordingly.
The switchpoint for each edge is determined by the signal result-
ing from the previous two edges. Because variations are tracked
in real time, the sensor has high immunity to target run-out and
retains excellent accuracy and functionality in the presence of
both run-out and transient mechanical events. Figure 9 shows
how the sensor uses historical data to provide the switching
threshold for a given edge.
Switching Threshold Levels
At Constant V
PROC
Level
0
100
BOP
V+
V
P
(
D
S
BRP
Off
On
Off
On
60
40
Figure 8. Switchpoint Relationship to Thresholds.The device switches
when V
PROC
passes a threshold level, B
OP
or B
RP
, while changing in the
corresponding direction: increasing for a B
OP
switchpoint, and decreasing
for a B
RP
switchpoint.
Figure 9. Switchpoint Determination. The two previous V
PROC
peaks are
used to determine the next threshold level: panel A, operate point, and
panel B, release point.
Dynamic B
OP
Threshold Determination
Dynamic B
RP
Threshold Determination
0
100
BOP
V+
V
P
(
D
S
On
Off
60
0
100
V+
V
P
(
D
S
BRP
Off
On
40
(A)
(B)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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(diǎn):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 |
| ATS627LSG | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:True Zero Speed, Low Jitter, High Accuracy Position Sensor IC |
| ATS627LSGTN-T | 功能描述:IC HALL EFFECT GEAR SENSOR 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(diǎn):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 |
| ATS630LSA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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