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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.
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相关代理商/技术参数
AG920-07E
功能描述:KIT EVALUATION GT SENSOR 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:-
AG921-07E
功能描述:AKL002-12E - Magnetic, GMR (Giant Magnetoresistive) Sensor Evaluation Board 制造商:nve corp/sensor products 系列:- 零件状态:有效 传感器类型:磁性，GMR（大型磁阻传感） 感应范围:- 接口:模拟 灵敏度:- 电压 - 电源:- 嵌入式:- 所含物品:板 使用的 IC/零件:AKL002-12E 标准包装:1
AG930-07E
制造商:NVE Corporation 功能描述:TMR ANGLE SENSOR EVAL BOARD 制造商:NVE Corporation 功能描述:EVAL BOARD, AAT001-10E ANGLE SENSOR; Silicon Manufacturer:NVE; Silicon Core Number:AAT001-10E; Kit Application Type:Sensing - Magnetic, Compass; Application Sub Type:Magnetic Sensor; Kit Contents:Eval Board AAT001-10E
AG931-07E
功能描述:AAT003-10E - Magnetic, Rotary Position Sensor Evaluation Board 制造商:nve corp/sensor products 系列:- 零件状态:新产品 传感器类型:磁性，旋转位置 感应范围:- 接口:模拟 灵敏度:- 电压 - 电源:1.5 V ~ 5.5 V 嵌入式:- 所含物品:板 使用的 IC/零件:AAT003-10E 标准包装:1
AG932-07E
功能描述:ADT001-10E, ADT002-10E - Magnetic, Rotary Position Sensor Evaluation Board 制造商:nve corp/sensor products 系列:- 零件状态:在售 传感器类型:磁性，旋转位置 感应范围:- 接口:模拟 灵敏度:- 电压 - 电源:2.4 V ~ 5.5 V 嵌入式:- 所含物品:板，磁铁 使用的 IC/零件:ADT001-10E，ADT002-10E 标准包装:1
AG933-07E
功能描述:AAT009-10E - Magnetic, Rotary Position Sensor Evaluation Board 制造商:nve corp/sensor products 系列:- 零件状态:新产品 传感器类型:磁性，旋转位置 感应范围:- 接口:模拟 灵敏度:- 电压 - 电源:1.5 V ~ 5.5 V 嵌入式:- 所含物品:板 使用的 IC/零件:AAT009-10E 标准包装:1
AG934-07E
功能描述:ATT101 ANGLE SENSOR EVAL KIT 制造商:nve corp/sensor products 系列:* 零件状态:在售 标准包装:1
AG940-07E
功能描述:AA006-00E, AD004-00E, ADL021-14E, ADV001-00E - Magnetic, GMR (Giant Magnetoresistive) Sensor Evaluation Board 制造商:nve corp/sensor products 系列:- 零件状态:在售 传感器类型:磁性，GMR（大型磁阻传感） 感应范围:- 接口:模拟和数字 灵敏度:- 电压 - 电源:- 嵌入式:- 所含物品:板，磁铁 使用的 IC/零件:AA006-00E，AD004-00E，ADL021-14E，ADV001-00E 标准包装:1