参数资料
型号: AG003-01E
厂商: NVE Corp/Sensor Products
文件页数: 107/145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:
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
Application Notes
Magnetic Biasing
In many applications, GMR Magnetic Field Sensors make use of biasing magnetic fields. Biasing
magnetic fields provide either a magnetic field to sense (where one is not present) or create a pseudo
zero field. Back-biasing a sensor consists of applying a magnetic field through the sensor package
without influencing the sensor. The purpose is to create a magnetic field that the device can sense for
applications where no magnetic field is present such as ferrous material detection. The figure below
shows a permanent magnet used for this purpose. The magnet adjusted in the X direction, as shown,
achieves the maximum field in the Z direction and minimum field in the sensitive X direction.
N
Z
S
X
M AGNETIC B IASING C ONFIGURATION
Another means of biasing a GMR Magnetic Field Sensor is to provide a constant magnetic field in the
sensitive direction. The result is a sensor biased part way up its output curve shown in the figure
below.
AA002 with Negative Bias Field Applied
0.3
0.25
0.2
0.15
0.1
0.05
0
-30
-20
-10
0
10
20
-0.05
Applie d Fie ld (Oe)
- 107 -
www.nve.com phone: 952-829-9217 fax: 952-829-9189
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