Capacitance-to-Digital Converter for Operation Under

📋 论文概要

本文提出了一种能在不确定能量收集电压低至0.3V下工作的电容数字转换器(CDC)，无需修调、参考电压和电压调节。通过极低功耗设计，实现了连续监测，解决了传统CDC在超低电压和低功耗环境下的应用难题。

💡 主要创新点

• 无需任何修调、电压/电流参考及电压调节即可在0.3V超低电压下工作，大幅简化系统架构。
• 功耗低于微瓦级，适配低至nW/mm²的能量收集场景，实现连续传感监测。
• 直接实现12位精度电容-数字转换，无需数字后处理线性化，降低系统复杂度。

🏷 关键词

📄 原文摘要

capacitive sensing via capacitance-to-digital conversion (CDC) needs to operate with minimal or no support from additional circuitry such as voltage regulation, voltage/current references or digital post-processing as shown in Fig. 5.2.1 (e.g., for linearization). At the same time, direct harvesting demands operation down to very low voltages and power, to consistently fit the power available from the environment even when scarce (e.g., down to ~nW/mm2 in light harvesters under realistic conditions). To enable continuous monitoring at power lower than the µW-range of state-of-the-art ~12-bit CDCs [1-3], 7-to-8-bit architectures with power down to sub-nW have been demonstrated for sensor nodes [4], although their supply

👥 作者与机构

Uncertain Harvested Voltage down to 0.3V with No Trimming, Reference and Voltage Regulation

Orazio Aiello1, Paolo Crovetti2, Massimo Alioto1 National University of Singapore, Singapore, Singapore Politecnico di Torino, Torino, Italy 1 2 In low-cost battery-less systems,