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| 型号： | AG001-01E |
| 厂商： | NVE Corp/Sensor Products |
| 文件页数： | 124/145页 |
| 文件大小： | 0K |
| 描述： | KIT ENGINEERING EVALUATION |
| 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： | 2 个板，CD，磁体，样品 |
| 已用 IC / 零件： | AA 和 AB 系列模拟传感器 |
| 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： | 391-1059 |
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Application Notes
Offset Characteristics
When using the specified sensitivity to predict the output of a sensor, remember that the sensor
typically has a DC offset voltage. This is due to electrical bridge imbalance as well as external
magnetic field bias (earth’s field, magnets…). The output of the sensor without applying the current of
interest is the base line output. The effects of the current will be added to this base line value. For the
graphs shown on pages 130 and 131, the Y axis intercept is the base line offset. To determine the
output of the sensor for a given field, this Y intercept number must be added to the value obtained by
multiplying the current value by the slope.
AC
As mentioned previously, most information thus far has focused on DC applications. AC current
detection with an AA003-02 is unique and thus deserves special attention in a separate application.
Because the sensor is magnetically omni-polar, the output will be the same sign for either direction of
magnetic field. As an AC current changes direction, the field surrounding the conductor will also
change direction. The sensor’s output will produce a fully rectified output. Low current AC is
particularly laden with hysteretic errors. One method of creating both a bipolar output and a lower
error is to magnetically bias the sensor. Biasing is discussed above in this Engineering and Application
Notes booklet.
Part-to-Part Sensitivity
The data and evaluation thus far have focused on individual part performance. The part-to-part
performance will also be briefly examined here. Each current sensor is tested and sorted to be within
certain limits as given in the specification sections of this catalog. The main specification that affects
the output of the sensor is the sensitivity. The AA003-02 sensors are tested to a sensitivity range of 2.0
to 3.2 mV/V/Oe. The offset specification also affects the output. The offset is the zero current or
electrical imbalance of the Wheatstone bridge inside the sensor.
The magnetic field of the earth at NVE, is approximately 0.5G at a 70-degree angle to the horizon
(values will vary depending on geographical location). The effects of this magnetic field should be
analyzed in each application.
Care should be taken by the user to reduce the number and proximity of ferrous materials and magnetic
field producers around the sensor. This typically is not a concern, but in some highly populated boards,
this may be a necessity. Close proximity to such devices can increase the magnetic hysteresis or affect
the output. In turn, these devices will decrease the sensor’s output precision.
The output of the AA003-02 is functionally dependent on the distance between the sensor and the
current. The field from a current carrying conductor is inversely proportional to the distance from the
conductor. As the distance from the sensor to the conductor increases, the output from the sensor
decreases. Likewise, as the sensor moves closer to the conductor, the output will increase. For the data
analysis done in this report, the sensor was placed “live bug” over the current traces. In this
configuration, the actual sensor element is about 0.04" from the top of the PCB trace. The output will
increase with the current carrying conductor placed directly over-top of the sensor package. In this
configuration, the sensing element is approximately 0.02" from the surface of the conductor. This
distance change will account for an estimated doubling of sensor output.
- 124 -
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 |
|---|---|
| AG003-01 | 功能描述:ASSEMBLY CURRENT SENSOR EVAL RoHS:否 类别:编程器，开发系统 >> 评估板 - 传感器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| AG003-01E | 功能描述:ASSEMBLY CURRENT SENSOR EVAL RoHS:是 类别:编程器，开发系统 >> 评估板 - 传感器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| 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 |
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