A 14b 98Hz-to-5.9kHz 1.7-to-50.8μW BW/Power Scalable Sensor Interface with a Dynamic Bandgap Reference and an Untrimmed Gain Error of ±0.26% from -40°C to 125°C

📋 论文概要

该论文提出了一种带宽和功耗高度可调的传感器接口，通过动态带隙基准和未修调技术，实现了从98Hz到5.9kHz的带宽范围和1.7μW到50.8μW的功耗范围，解决了IoT应用中不同场景对精度和功耗的差异化需求。

💡 主要创新点

• 提出了一种带宽/功耗可扩展的传感器接口架构，支持从低带宽高精度到高带宽的灵活切换。
• 采用动态带隙基准和未修调技术，降低了功耗并提高了精度，无需传统修调步骤。

🏷 关键词

📄 原文摘要

Kofi A. A. Makinwa3, Nick Nianxiong Tan1 Vango Technologies, Hangzhou, China Zhejiang University, Hangzhou, China 3 Delft University of Technology, Delft, The Netherlands *Equally Credited Authors (ECAS) 1 2 To accommodate different use cases, the bandwidth (BW) and power dissipation of sensor interfaces for IoT applications should be highly scalable. For example, Coulomb counting requires precision current sensors with low BW and microwatt power for extended battery life, while AC battery impedance measurements require sensors with much higher BWs [1]. There is thus a need for precision ADCs that are BW/power scalable. Although SAR ADCs can easily scale their BW and power by changing their sampling frequency, they typically have a moderate resolution [2]. To achieve higher resolution, BW/power-scalable Delta-Sigma ADCs can be used [3]. In both cases, however, the ADC will typically be combined with an external band-gap reference (BGR)

👥 作者与机构

Zhong Tang*1, Yuyan Liu*1, Pengpeng Chen1, Haining Wang1, Xiaopeng Yu2,