参数资料
型号: AG911-07E
厂商: NVE Corp/Sensor Products
文件页数: 92/145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
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: 391-1062
Application Notes
This confusing result is often seen when trying to detect very small magnetic fields such as the earth’s
field in magnetic compass applications or currency detection applications. The solution to this problem
is to bias the sensor element with an external magnetic field, so that the operating point of the sensor is
on the linear portion of the characteristic curve. This can be done either with an external permanent
magnet, or a current running near the sensor. Biasing the sensor with a positive external field from a
magnet or current will shift the sensor’s output characteristic as shown below:
Voltage
Output
- Applied Field
+ Applied Field
With this approach, a small applied field to the sensor will result in a bipolar output signal.
Furthermore, the slope of the signal characteristic will be the same no matter which curve the sensor is
operating on. So, the magnetic sensitivity of the device is the same, no matter how much hysteresis the
sensor has.
- 92 -
www.nve.com phone: 952-829-9217 fax: 952-829-9189
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