A 20µW Neural Recording Tag with Supply-CurrentModulated AFE in 0.13µm CMOS

📋 论文概要

该论文提出了一种用于小动物体内实验的20µW神经记录标签，采用0.13µm CMOS工艺。通过供电电流调制模拟前端（AFE）实现低功耗放大、模数转换和短距离无线传输，解决了极小植入体无需电池的永久供电问题。

💡 主要创新点

• 提出供电电流调制AFE架构，通过调制供电电流实现低功耗信号调理。
• 集成放大、ADC和无线传输于单芯片，总功耗仅20µW，适合极小植入体。
• 利用近场电感耦合实现无线供电和通信，无需电池。

🏷 关键词

📄 原文摘要

University of Florida, Gainesville, FL Perpetual measurement of brain activity in untethered small animal in-vivo experiments requires low power micro-systems incorporating amplification, A/D conversion, and short range wireless transmission. Overall power and communication strategies depend largely on size constraints of the implant site. For extremely small implants, these systems generally call for permanently powering the implanted recording system without the use of a battery. Such systems are primarily based on low frequency and close proximity inductive links for power and communication [1]. Alternatively, in scenarios where the implant site is less constrained, the use of small batteries can provide increased communication range [2]. In this paper, we present a 20µW neural recording tag architecture that can be either remotely powered using a transponder-reader link or operated from a small battery for increased communication range. The key features that enable this increased s

👥 作者与机构

Zhiming Xiao, Chun-Ming Tang, Christopher M. Dougherty, Rizwan Bashirullah