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参数资料
| 型号： | A1373LKB-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 13/23页 |
| 文件大小： | 466K |
| 描述： | IC SENSOR HALL EFFECT PREC 3-SIP |
| 产品培训模块： | Current Sensor |
| 标准包装： | 500 |
| 传感范围： | 1.75mV/G ~ 11.25mV/G |
| 类型： | 双极或单极，可编程 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 电流 - 电源： | 10mA |
| 电流 - 输出（最大）： | 10mA |
| 输出类型： | 模拟，比率 |
| 特点： | 高精度 |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | 3-SIP |
| 供应商设备封装： | 3-SIP |
| 包装： | 散装 |
| 其它名称： | 620-1029 |
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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相关代理商/技术参数 |
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|---|---|
| A1373LKBTI | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:HIgh Precision, Output Pin Programmable Linear Hall Effect Sensors |
| A1373LKBTI-T | 制造商:ALLEGRO 制造商全称: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:通用继电器 DC SOLENOID. RoHS:否 制造商:Omron Electronics 触点形式:1 Form A (SPST-NO) 触点电流额定值:150 A 线圈电压:24 VDC 线圈电阻:144 Ohms 线圈电流:167 mA 切换电压:400 V 安装风格:Chassis 触点材料: |
| A1374EKB | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:High Precision, Output Pin Programmable Linear Hall Effect Sensors |
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