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參數(shù)資料
| 型號： | ATS616LSG |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Dynamic Self-Calibrating Peak-Detecting Differential Hall Effect Gear Tooth Sensor |
| 中文描述： | 動態(tài)自校準(zhǔn)峰值檢測差動齒輪齒霍爾效應(yīng)傳感器 |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 444K |
| 代理商： | ATS616LSG |
11
ATS616LSG-DS, Rev. 1
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Dynamic Self-Calibrating Peak-Detecting Differential Hall Effect Gear Tooth Sensor
ATS616LSG
Peak Detecting vs. AC-Coupled Filters.
High-pass filtering
(normal ac coupling) is a commonly used technique for eliminat-
ing circuit offsets. However, ac coupling has errors at power-on
because the filter circuit needs to hold the circuit zero value
even though the circuit may power-on over a large signal. Such
filtering techniques can only perform properly after the filter
has been allowed to settle, which typically takes longer than 1s.
Also, high-pass filter solutions cannot easily track rapidly chang-
ing baselines, such as those caused by eccentricities. (The term
baseline
refers to a 0 G differential field, where each Hall-effect
element is subject to the same magnetic field strength; see figure
3.) In contrast, peak detecting designs switch at the change in
slope of the differential signal, and so are baseline-independent
both at power-on and while running.
Peak Detecting vs. Zero-Crossing Reference.
The usual dif-
ferential zero-crossing sensors are susceptible to false switching
due to off-center and tilted installations that result in a shift of
the baseline that changes with air gap. The track-and-hold peak
detection technique ignores baseline shifts versus air gaps and
provides increased immunity to false switching. In addition,
using track-and-hold peak detection techniques, increased air
gap capabilities can be expected because peak detection utilizes
the entire peak-to-peak signal range, as compared to zero-cross-
ing detectors, which switch at half the peak-to-peak signal.
Power-On Operation.
The device powers-on in the Off state
(output voltage high), irrespective of the magnetic field condi-
tion. The power-up time of the circuit is no greater than 500
μ
s.
The circuit is then ready to accurately detect the first target edge
that results in a high-to-low transition of the device output.
Undervoltage Lockout (UVLO).
When the supply voltage, V
CC
,
is below the minimum operating voltage, V
CC(UV)
, the device is
off and stays off, irrespective of the state of the magnetic field.
This prevents false signals, which may be caused by undervolt-
age conditions (especially during power-up), from appearing at
the output.
Output.
The device output is an open-collector stage capable of
sinking up to 20 mA. An external pull-up (resistor) must be sup-
plied to a supply voltage of not more than 24 V.
Output Polarity.
The output of the unit will switch from low to
high as the leading edge of a tooth passes the branded face of the
sensor in the direction indicated in figure 6. This means that in
such a configuration, the output voltage will be high when the
sensor is facing a tooth. If the target rotation is in the oppo-
site direction relative to the sensor, the output polarity will be
opposite as well, with the unit switching from low to high as the
leading edge passes the unit.
of Sensor
Rotating Target
Branded Face
1
4
Figure 6. This left-to-right (pin 1 to pin 4) direction of target rotation
results in a high output signal when a tooth of the target gear is nearest
the branded face of the sensor. A right-to-left (pin 4 to pin 1) rotation
inverts the output signal polarity.
Figure 7. The magnetic profile reflects the geometry of the target, allowing the device to present an accurate digital output response.
Target
Mechanical Profile
Target
Magnetic Profile
Sensor Output
Electrical Profile
Target Motion from
Pin 1 to Pin 4
Sensor Output
Electrical Profile
Target Motion from
Pin 4 to Pin 1
Signature Tooth
B+
B
IN
V+
V
OUT
V+
V
OUT
Sensor Output
Switch State
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
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| ATS616LSG_10 | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:The ATS616 gear-tooth sensor IC is a peak-detecting device that uses automatic gain control and an integrated capacitor to provide extremely accurate gear edge detection down to.. |
| ATS616LSGTN-T | 功能描述:IC GEAR TOOTH SENSOR HALL 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 |
| ATS617LSG | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Dynamic, Self-Calibrating, Peak-Detecting, Differential Hall Effect Gear Tooth Sensor IC |
| ATS617LSGTN-T | 功能描述:IC HALL EFFECT GEAR SENSOR 4SIP 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 |
| ATS622LSB | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:TRUE ZERO-SPEED HALL-EFFECT GEAR-TOOTH SENSOR |
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