现代电子技术Issue(22)：108-111,114,5.
一种自旋阀GMR隔离放大器设计
Design of a spin-valve GMR isolation amplifier
摘要
Abstract
In order to solve the linearity and frequency characteristic problems existing in the isolator for traditional photo-electric,capacitance and transformer isolation,a spin-valve giant magneto-resistance (GMR) isolation amplifier is designed, which can be integrated together with the silicon semiconductor,and has the characteristics of high sensitivity,well linearity, simple structure,etc. The Tanner software is used to edit,simulate and verify the circuit with the CSMC 0.5 μH double poly mix process. The front-end circuit of isolator transforms 0~5 V input voltage into 1.4~10 mA output current,and when the gain is 1,the back-end receiving circuit CMRR is 73 dB,the gain adjustable range is 1~200,and operating bandwidth is more than 100 kHz. The amplifier can meet the design requirements used in abominable environment.关键词
巨磁阻/隔离放大器/线性度要求/共模抑制比Key words
GMR/isolation amplifier/linearity requirement/common mode RR分类
信息技术与安全科学引用本文复制引用
杨荣文,钱正洪,朱华辰,白茹..一种自旋阀GMR隔离放大器设计[J].现代电子技术,2013,(22):108-111,114,5.基金项目
浙江省重大科技专项 （）
浙江省教育厅“磁电子材料和器件”高校创新团队 （）
浙江省重点科技创新团队 （）
