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參數(shù)資料
| 型號： | A1374EKB-T |
| 廠商： | Allegro Microsystems Inc |
| 文件頁數(shù)： | 13/23頁 |
| 文件大?。?/td> | 466K |
| 描述： | IC SENSOR HALL EFFECT PREC 3-SIP |
| 產(chǎn)品培訓模塊： | Current Sensor |
| 標準包裝： | 500 |
| 傳感范圍： | 1.75mV/G ~ 11.25mV/G |
| 類型： | 雙極或單極，可編程 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 電流 - 電源： | 10mA |
| 電流 - 輸出（最大）： | 10mA |
| 輸出類型： | 模擬，比率 |
| 特點： | 高精度 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 3-SIP |
| 供應商設備封裝： | 3-SIP |
| 包裝： | 散裝 |
High Precision, Output Pin Programmable
Linear Hall Effect Sensor ICs
A1373 and
A1374
12
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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 recoverability
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
Low-Pass
Filter
Concept of Chopper Stabilization Technique
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| A1374EKBTI | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:High Precision, Output Pin Programmable Linear Hall Effect Sensors |
| A1374EKBTI-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 |
| A1374LKB | 功能描述:IC SENSOR HALL EFFECT PREC 3-SIP RoHS:否 類別:傳感器，轉換器 >> 磁性 - 霍爾效應，數(shù)字式開關，線性，羅盤 (IC) 系列:- 標準包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉 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） 供應商設備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| A1374LKB-T | 功能描述:IC SENSOR HALL EFFECT PREC 3-SIP RoHS:是 類別:傳感器，轉換器 >> 磁性 - 霍爾效應，數(shù)字式開關，線性，羅盤 (IC) 系列:- 標準包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉 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） 供應商設備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| A1374LKBTI | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:High Precision, Output Pin Programmable Linear Hall Effect Sensors |
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