⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一种采用模拟调节避免交叉电流的32kHz晶体振荡器，实现了0.36nW的超低功耗和0.9V的低电压工作，适用于电池驱动的物联网时间保持应用。
Timekeeping with limited energy plays a critical role in many battery-driven Internet-ofThings (IoT) applications. For this purpose, 32kHz oscillators [1-9] with high accuracy and ultra-low-power (ULP) consumption are needed. Common 32kHz oscillators use highquality crystals (XO) to ensure high accuracy and are continuously running from a battery or a system power supply. Nowadays, micro-electromechanical-system (MEMS)-based resonators [10] are also being considered due to their smaller sizes and better silicon integration. The development of sustaining circuits for those devices led to conceptual changes to achieve optimal performance during the last decades. Earlier techniques relied on classical inverters (Pierce driver) using a non-linear RC-filter [11] to reduce the oscillator’s amplitude. Recent publications [1-9] suggest eliminating the inverter and its loss-driven cross-currents by directly generating pulsed-injection XOs (PIXO) to sustain
Tobias Chlan, Markus Dietl, Ralf Brederlow
Technical University Munich, Munich, Germany