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參數(shù)資料
| 型號(hào)： | ATS642LSHTN-I2-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Two-Wire True Zero Speed Miniature Differential Peak-Detecting Gear Tooth Sensor with Continuous Calibration |
| 中文描述： | 兩線真零速微型差分峰值檢測與校正連續(xù)齒輪齒傳感器 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大小： | 430K |
| 代理商： | ATS642LSHTN-I2-T |
10
ATS642LSH-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
True Zero Speed Miniature Differential Peak-Detecting Gear Tooth Sensor
ATS642LSH
Sensing Technology
The gear tooth sensor subassembly contains a single-chip dif-
ferential Hall effect sensor IC, an optimized samarium cobalt
magnet, and a
fl
at ferrous pole piece. The Hall IC possesses two
Hall elements, which sense the magnetic pro
fi
le of the ferrous
target simultaneously, but at different points (spaced at a 1.5 mm
pitch), generating a differential internal analog voltage (V
PROC
)
that is processed for precise switching of the digital output
signal.
The Hall IC is self-calibrating and also possesses a temperature
compensated ampli
fi
er and offset compensation circuitry. Its
voltage regulator provides supply noise rejection throughout the
operating voltage range. Changes in temperature do not greatly
affect this device due to the stable ampli
fi
er design and the offset
compensation circuitry. The Hall transducers and signal process-
ing electronics are integrated on the same silicon substrate, using
a proprietary BiCMOS process.
Target Profiling
An operating device is capable of providing digital information
that is representative of the mechanical features on a rotating tar-
get. The waveform diagram shown in
fi
gure 3 presents the auto-
matic translation of the mechanical pro
fi
le, through the magnetic
pro
fi
le that it induces, to the digital output signal of the sensor.
Output Polarity
Figure 3 shows the output polarity for the orientation of target
and sensor shown in
fi
gure 2. The target direction of rotation
shown is: perpendicular to the leads, across the face of the
device, from the pin 1 side to the pin 4 side. This results in the
sensor output switching from high, I
CC(High)
, to low I
CC(Low)
, as
the leading edge of a tooth (a rising mechanical edge, as detected
by the sensor) passes the sensor face. In this con
fi
guration, the
device output current switches to its low polarity when a tooth is
the target feature nearest to the sensor. If the direction of rota-
tion is reversed, then the output polarity inverts.
Note that output voltage polarity is dependent on the position of
the sense resistor, R
SENSE
(see
fi
gure 4).
Target (Gear)
Back-biasing Magnet
South Pole
North Pole
Case
(Pin 1 Side)
(Pin 4 Side)
Hall IC
Pole Piece
(Concentrator)
Element Pitch
Dual-Element
Hall Effect Device
Hall Element 1
Hall Element 2
of Sensor
Rotating Target
Branded Face
1
4
Functional Description
Figure 1. Relative motion of the target is detected by the dual Hall ele-
ments mounted on the Hall IC.
Figure 2. This left-to-right (pin 1 to pin 4) direction of target rotation
results in a low output signal when a tooth of the target gear is nearest
the face of the sensor (see
fi
gure 3). A right-to-left (pin 4 to pin 1) rota-
tion inverts the output signal polarity.
Figure 4: Voltages pro
fi
les for high side and low side two-wire sensing.
Figure 3. Output Pro
fi
le of a ferrous target for the polarity indicated in
fi
gure 2.
ATS642
VCC
GND
4
V
CC
I
CC
1
V
OUT(L)
ATS642
VCC
GND
4
V
SUPPLY
1
V
OUT(H)
I
CC
R
SENSE
R
SENSE
I
OUT
V
OUT(H)
V+
V
OUT(L)
V+
I+
Representative
Differential
Magnetic Profile
Target
Mechanical Profile
Sensor Electrical
Output Profile, I
OUT
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PDF描述 |
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| ATS643LSH-I2 | Self-Calibrating, Zero-Speed Differential Gear Tooth Sensor with Continuous Update |
| ATS643LSH | Self-Calibrating, Zero-Speed Differential Gear Tooth Sensor with Continuous Update |
| ATS643LSH-I1 | Self-Calibrating, Zero-Speed Differential Gear Tooth Sensor with Continuous Update |
| ATS643LSHTN-I1-T | Self-Calibrating, Zero-Speed Differential Gear Tooth Sensor with Continuous Update |
| ATS643LSHTN-I2-T | Self-Calibrating, Zero-Speed Differential Gear Tooth Sensor with Continuous Update |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ATS642LSHTN-I2-T | 制造商:Allegro MicroSystems 功能描述:Hall Effect IC |
| ATS643LSH | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Self-Calibrating, Zero-Speed Differential Gear Tooth Sensor with Continuous Update |
| ATS643LSH-I1 | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Self-Calibrating, Zero-Speed Differential Gear Tooth Sensor with Continuous Update |
| ATS643LSH-I1TN | 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(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 |
| ATS643LSH-I2 | 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(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 |
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