⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一种用于超低功耗无线传感器节点的电容数字转换器，功耗仅160nW，品质因数为63.9fJ/conversion-step。通过零静态电流的电容传感技术，解决了超低功耗微系统中电容读取的能效问题。
University of Michigan, Ann Arbor, MI 1 2 Recent advances in nW-level wireless sensor nodes have created opportunities in emerging applications such as bio-implantable telemetry, smart healthcare, and environmental monitoring [1]. At the same time, there are many circuit and system design challenges to achieving high functionality in such ultra-low-power microsystems. One of the key sensing modalities in these systems is capacitive sensing. With zero static current during signal readout, capacitive sensing is well suited to ultra-low-power microsystems and has been widely adopted in the sensing of pressure [2,3], displacement [4], and humidity [5]. Previous research in capacitive-to-digital converter (CDC) design aimed at achieving high resolution with low power consumption. Switched-capacitor ΔΣ converters have been shown to achieve high resolution [4,5]. However, their oversampling procedure repeatedly charges and discharges the large sensor
Hyunsoo Ha1, Dennis Sylvester2, David Blaauw2, Jae-Yoon Sim1
Pohang University of Science and Technology, Pohang, Korea,