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參數(shù)資料
| 型號： | A1373LKB |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | HIgh Precision, Output Pin Programmable Linear Hall Effect Sensors |
| 中文描述： | 高精度，輸出引腳可編程線性霍爾效應(yīng)傳感器 |
| 文件頁數(shù)： | 12/23頁 |
| 文件大?。?/td> | 435K |
| 代理商： | A1373LKB |
12
A1373-DS, Rev. 3
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
High Precision, Output Pin Programmable, Linear Hall Effect Sensors
A1373 and A1374
Chopper Stabilization Technique
Chopper stabilization is a unique approach used to minimize
Hall offset on the chip. The patented Allegro technique, namely
Dynamic Quadrature Offset Cancellation, removes key sources
of the output drift induced by thermal and mechanical stresses.
This offset reduction technique is based on a signal modulation-
demodulation process. The undesired offset signal is separated
from the magnetic field-induced signal in the frequency domain,
through modulation.
The subsequent demodulation acts as a modulation process for
the offset, causing the magnetic field-induced signal to recover
its original spectrum at baseband, while the dc offset becomes
a high-frequency signal. The magnetic-sourced signal then can
pass through a low-pass filter, while the modulated dc offset is
suppressed.
The chopper stabilization technique uses a 200 kHz high
frequency clock. For demodulation process, a sample and hold
technique is used, where the sampling is performed at twice the
chopper frequency (400 kHz). This high-frequency operation
allows a greater sampling rate, which results in higher accuracy
and faster signal-processing capability.
This approach desensitizes the chip to the effects of thermal and
mechanical stresses, and produces devices that have extremely
stable quiescent Hall output voltages and precise recoverabil-
ity after temperature cycling. This technique is made possible
through the use of a BiCMOS process, which allows the use of
low-offset, low-noise amplifiers in combination with high-den-
sity logic integration and sample-and-hold circuits.
Amp
Regulator
Clock/Logic
Hall Element
S
H
Low-Pass
Filter
Concept of Chopper Stabilization Technique
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| A1373LKB-T | HIgh Precision, Output Pin Programmable Linear Hall Effect Sensors |
| A1373LKBTI | HIgh Precision, Output Pin Programmable Linear Hall Effect Sensors |
| A1373LKBTI-T | HIgh Precision, Output Pin Programmable Linear Hall Effect Sensors |
| A1374LKB | HIgh Precision, Output Pin Programmable Linear Hall Effect Sensors |
| A1374LKB-T | HIgh Precision, Output Pin Programmable Linear Hall Effect Sensors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A1373LKB-T | 功能描述:IC SENSOR HALL EFFECT PREC 3-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:- 標準包裝: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 |
| A1373LKBTI | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:HIgh Precision, Output Pin Programmable Linear Hall Effect Sensors |
| A1373LKBTI-T | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:High Precision, Output Pin Programmable Linear Hall Effect Sensors |
| A1374 | 制造商:Hakko 功能描述:Heater,980 |
| A-1374 | 功能描述:通用繼電器 DC SOLENOID. RoHS:否 制造商:Omron Electronics 觸點形式:1 Form A (SPST-NO) 觸點電流額定值:150 A 線圈電壓:24 VDC 線圈電阻:144 Ohms 線圈電流:167 mA 切換電壓:400 V 安裝風格:Chassis 觸點材料: |
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