参数资料
型号: 12217
厂商: NVE Corp/Sensor Products
文件页数: 7/145页
文件大小: 0K
描述: MAGNET 3.5MM DIA X 4MM THICK
标准包装: 10
系列: *
其它名称: Q7078272A
Introduction
Basic Sensor Design
NVE manufactures three basic sensor element types: magnetometers, which detect the strength of the
applied magnetic field, gradiometers (or differential sensors), which detect the difference in the applied
magnetic field strength at two discrete points on the sensor element, and spin valve sensors, which
change in output with the angular difference between the pinned layer and the free layer of the GMR
material while the device is exposed to a saturating magnetic field.
These three basic sensor element types are described in the sections below.
Magnetometers
NVE’s magnetometers are covered by our basic GMR material and sensor structure patents and have
unique features designed to take advantage of the characteristics of GMR sensor materials. A
photomicrograph of an NVE sensor element is shown below:
5K GMR Resistors
(Sensing Elements)
Flux Concentrators
5K GMR Resistors
(Reference Elements)
The size of this IC is approximately 350 microns by 1400 microns. The sensor is configured as a
Wheatstone bridge. The serpentine structures in the center of the die and to the left of center under the
large plated structure are 5 k ? resistors made of GMR material.
The two large plated structures shown on the die are flux concentrators. They serve two purposes.
First, notice that they cover two of the resistors in the Wheatstone bridge. In this configuration the flux
concentrators function as a shield for these two resistors, preventing an applied magnetic field from
reaching them. Therefore, when a field is applied, the two GMR resistors in the center of the die
decrease in resistance, while the two GMR resistors under the flux concentrator do not. This imbalance
leads to the bridge output.
-7-
www.nve.com phone: 952-829-9217 fax: 952-829-9189
相关PDF资料
PDF描述
B512-2T-YDA MOD DIODE SCR 25A 240VAC .250"QC
HAL 200-S CURRENT TRANSDUCERS 200A 15V
B553-2 MOD DIODE SCR 25A 280VAC ISO QC
B511F-2 MOD DIODE SCR 25A 120VAC ISO QC
HAL 50-S CURRENT TRANSDUCERS 50A 15V
相关代理商/技术参数
参数描述
122170 制造商:Amphenol Connex 功能描述:TNC BLKHD CRMP JCK RG59-50--TF - Bag
1-22170-6 制造商:TE Connectivity 功能描述:PIN,COTTER - Bulk 制造商:TE CONNECTIVITY 功能描述:PIN,COTTER
1-22170-8 制造商:TE Connectivity 功能描述:PIN,COTTER - Bulk 制造商:TE CONNECTIVITY 功能描述:PIN,COTTER
1-2217206-0 功能描述:BLADE, SLUG 制造商:te connectivity amp connectors 系列:* 零件状态:有效 标准包装:1
1-2217206-1 功能描述:BLADE, SLUG 制造商:te connectivity amp connectors 系列:* 零件状态:有效 标准包装:1