• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2014, Vol. 36 ›› Issue (12): 2361-2366.

• 论文 • 上一篇    下一篇

一种面向无源RFID电子标签的电流灵敏放大器设计

李文晓,李建成,李聪,王震,尚靖   

  1. (国防科学技术大学电子科学与工程学院,湖南 长沙 410073)
  • 收稿日期:2014-05-20 修回日期:2014-07-24 出版日期:2014-12-25 发布日期:2014-12-25
  • 基金资助:

    国家自然科学基金资助项目(61201167)

Design of a novel current sense amplifier for passive RFID           

LI Wenxiao,LI Jiancheng,LI Cong,WANG Zhen,SHANG Jing   

  1. (College of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China)
  • Received:2014-05-20 Revised:2014-07-24 Online:2014-12-25 Published:2014-12-25

摘要:

提出了一种适用于无源射频识别RFID电子标签中多次可编程MTP非易失性存储器NVM的新型电流灵敏放大器结构。该电路在不增加面积的情况下具有低功耗、高速度、高可靠性和高灵敏度的优越性能。基于GSMC 0.13μmCMOS工艺下的仿真结果表明,新型灵敏放大器在-40℃~80℃的环境下具有很高的读取速度,且能够工作在低电压(0.8 V)下。在1.2 V工作电压、27℃室温下电路的读出延时是10.5 ns,平均功耗为6.1 μW@25MHz,分辨率可达到33 nA。

关键词: 灵敏放大器, 射频识别, 非易失性存储器, MTP, 低功耗

Abstract:

A novel sense amplifier is proposed to be suitable for the Multiple Time Programmable Nonvolatile Memory (MTPNVM) of passive RadioFrequency Identification (RFID).The circuit has superior performance such as lowpower, high speed,reliability and highly sensitive without extra area overhead. The simulation based on GSMC 0.13μmCMOS process shows that the new sense amplifier has high read speed and can work at low voltages (0.8V).When the voltage is 1.2V and the temperature is 27℃,the read delay is 10.5ns,the power consumption is 6.1μW@25MHz and the current difference it can identify accurately is about 33nA.

Key words: sense amplifier;radio-frequency identification(RFID);nonvolatile memory (NVM);multiple time programmable(MTP);low power