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| 型号： | AG003-01E |
| 厂商： | NVE Corp/Sensor Products |
| 文件页数： | 85/145页 |
| 文件大小： | 0K |
| 描述： | ASSEMBLY CURRENT SENSOR EVAL |
| 标准包装： | 1 |
| 传感器类型： | 磁性 GMR（大型磁阻传感） |
| 接口： | 模拟 |
| 嵌入式： | 否 |
| 已供物品： | 板，CD |
| 已用 IC / 零件： | AA 系列电流传感器 |
| 产品目录页面： | 2839 (CN2011-ZH PDF) |
| 相关产品： | 391-1054-5-ND - SENSORS MAGNETIC FIELD LP 8-SOIC 391-1052-5-ND - SENSORS MAGNETIC FIELD 8SOIC 391-1050-5-ND - SENSORS MAGNETIC FIELD 8SOIC 391-1049-5-ND - SENSORS MAGNETIC FIELD 8MSOP 391-1048-5-ND - SENSORS MAGNETIC FIELD 8SOIC 391-1045-5-ND - SENSORS MAGNETIC FIELD 8SOIC 391-1032-5-ND - SENSORS MAGNETIC FIELD 8MSOP 391-1030-5-ND - SENSORS MAGNETIC FIELD 8MSOP AB001-02-ND - SENSORS MAGNETIC FIELD 8SOIC 391-1020-5-ND - SENSORS MAGNETIC FIELD LP 8-SOIC 更多... |
| 其它名称： | 391-1060 |
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Application Notes
Temperature Characteristics of GMR Sensors
Temperature excursions cause several changes to the characteristics of GMR sensors. The changes are
described below:
1.
2.
3.
Changes to base resistance of the sensor element [TCR] – This is a temperature coefficient of
resistance of the sensor element with no applied magnetic field to the sensor. The TCR is
normally given in %/oC.
Changes to the % GMR of the sensor element [TCGMR] – When a magnetic field is applied,
the % GMR exhibited by the sensor element will change. Generally as temperature increases,
% GMR decreases. TCGMR is normally given in %/oC.
Changes to the saturation field of the sensor element [TCHsat] – The magnetic field at which
the sensor will provide its maximum output will also change with temperature. The saturation
field (Hsat) will decrease as temperature increases. TCHsat is normally given in %/oC.
For purposes of temperature compensation, a single resistor sensor element made from GMR material
can be modeled as two resistors in series. The first resistor is the base resistive element, and is a
constant resistance at a given temperature, regardless of the applied magnetic field. The second resistor
represents the changing resistance of the single resistor sensor element made from GMR material, as
magnetic field is applied. This model is shown in the following diagram:
R1
Base
Resistance
R2
GMR
Resistance
The base resistance of R1 is the resistance of the sensor element at 25°C when the saturating magnetic
field is applied and R2 has dropped to 0 resistance; in other words, the minimum resistance of the
sensor element as described in the GMR Material Physics section. The following formula can be used
to compute R1 at various temperatures:
R1 = R1 Base Resistance * [ 1 + (TCR * (Temperature - 25°C))]
The resistance of R2 in the diagram varies both with the temperature and the applied magnetic field.
The base resistance of R2 is defined as its maximum resistance at 25°C. This is the resistance with zero
applied magnetic field. The base resistance of R2 will vary with temperature (at zero applied field) as
described by the following formula:
R2 Zero Field = R2 Base Resistance * [ 1 + (TCGMR * (Temperature - 25°C))]
- 85 -
www.nve.com phone: 952-829-9217 fax: 952-829-9189
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AG01 | 制造商:Sanken Electric Co Ltd 功能描述:Diode Switching 400V 0.7A 2-Pin 制造商:Sanken Electric Co Ltd 功能描述:DIODE ULT FAST REC AXIAL 制造商:Panasonic Industrial Company 功能描述:DIODE SUB P-EG01 |
| AG-01 | 制造商:Panasonic Industrial Company 功能描述:DIODE |
| AG01A | 制造商:Sanken Electric Co Ltd 功能描述:Diode Switching 600V 0.5A 2-Pin Bulk 制造商:Sanken Electric Co Ltd 功能描述:Diode Switching 600V 0.5A 2-Pin Pack |
| AG01AV | 制造商:Sanken Electric Co Ltd 功能描述:DIODE ULT FAST REC AXIAL |
| AG01AV0 | 制造商:Sanken Electric Co Ltd 功能描述:DIODE ULT FAST REC AXIAL |
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