基于自旋阀材料的可编程灵敏度磁敏传感器  

Programmable Sensitivity Magnetic Sensor Based on Spin-value Material

作　　者：朱华辰[1] 钱正洪[1,2] 胡亮 李健平[1] 白茹[1] 

机构地区：[1]杭州电子科技大学磁电子中心,浙江杭州310018 [2]宜昌东方微磁科技有限公司,湖北宜昌443000

出　　处：《材料保护》2013年第S2期164-166,共3页Materials Protection

基　　金：科技部973子课题(No.2011CBA00602);浙江省重大科技专项(No.2011C1147);浙江省教育厅"磁电子材料和器材"创新团队(No.2009[171]);浙江省科技创新团队(No.2010R50010)

摘　　要：基于自旋阀材料的磁敏传感器,以其小尺寸、高灵敏度、低功耗的优势,在工业控制、汽车电子等领域中应用日益广泛。然而,单一灵敏度的传感器在实际应用中受到诸多限制。本文提出了一种基于自旋阀材料的可编程灵敏度磁敏传感器,不仅对各类应用具有更强的适应能力,而且能够与嵌入式系统配合而实现"智能化"传感与控制系统。该传感器中,封装集成了东方微磁科技有限公司生产的VA100F2自旋阀传感器芯片以及针对该传感器的信号特点专门设计的一款可编程仪表放大器芯片。测试表明,本文所提出的传感器可以有效的实现近似1~8倍原始灵敏度的可编程调节。The magnetic sensor based on spin-value material has been applied wider in the fields such as industrial controlling,automotive electronics etc.,because of its advantages that small size,high sensitivity,and low power consumption. However,application is limited for the sensors with single sensitivity. A programmable sensitivity magnetic sensor based on spin-value material has been proposed in this paper. This sensor shows more applicability for a variety of applications,but can also work with embedded system to be ' intelligent' sensing and controlling systems. In this sensor,a spin-value sensor chip,VA100F2,which is fabricated by SpinIC Inc.,is integrated with a customized programmable instrument amplifier chip in the package. The test results show that the proposed sensor achieves programmable sensitivity that from1 time to 8 times the original sensitivity.

关 键 词：巨磁电阻 自旋阀 可编程灵敏度 仪表放大器 

分 类 号：TP212.13[自动化与计算机技术—检测技术与自动化装置]