参数资料
型号: AG910-07E
厂商: NVE Corp/Sensor Products
文件页数: 118/145页
文件大小: 0K
描述: KIT EVALUATION GMR SWITCH
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:
已供物品: 3 个板,CD,磁体,样品,8-MSOP 插口
已用 IC / 零件: AD 系列开关
相关产品: AD004-00E-ND - SENSOR MAG SW 20G STNDRD 8-MSOP
AD122-00-ND - SENSOR MAG SW 40G CROS AX 8-MSOP
AD105-00-ND - SENSOR MAG SW 40G STANDRD 8-MSOP
391-1018-ND - SENSOR MAG SW 10G CRS AXS 8-MSOP
391-1012-ND - SENS MAG SW 28G CROS AXIS 8-MSOP
391-1010-ND - SENS MAG SW 40G CROS AXIS 8-MSOP
391-1009-ND - SENS MAG SW 20G CROS AXIS 8-MSOP
391-1008-ND - SENSOR MAG SW 28G STNDRD 8-MSOP
391-1006-ND - SENSOR MAG SW 40G STNDRD 8-MSOP
391-1005-ND - SENSOR MAG SW 20G STNDRD 8-MSOP
其它名称: 391-1061
Application Notes
The figure below shows another configuration where a current trace on a PCB is under the board-
mounted sensor.
Current carrying
PCB trace
NVE
AAxxx-xx
Axis of Sensitivity
PCB
S ENSING M AGNETIC F IELD FROM A C URRENT C ARRYING PCB T RACE
An Excel spreadsheet is available on NVE’s web site which helps calculate the magnetic field at the
sensor from a current carrying trace on the board as shown in the diagram above.
Principles of Operation
The magnetic field created by the current surrounds the conductor radially. As the magnetic field
affects the GMR material in the sensor, a differential output is produced at the out pins of the sensor.
The magnetic field strength is directly proportional to the current flowing through the conductor. As
the current increases, the surrounding magnetic field will also increase, thus increasing the output from
the sensor. Similarly, as the current decreases, the magnetic field and sensor output decrease.
Since the current is not measured directly, the sensor output must be correlated to the current. The
following data and graphs are based upon analysis of NVE’s evaluation board contained in our current
sensor evaluation kit, part number AG003-01. The PCB contains four traces of three different widths:
90 mils, 60 mils, and 10 mils.
- 118 -
www.nve.com phone: 952-829-9217 fax: 952-829-9189
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