A regulation-free sub-0.5V 16/24MHz crystal oscillator for energy-harvesting BLE radios with 14.2nJ startup energy and 31.8pW steady-state power
A regulation-free sub-0.5V 16/24MHz crystal oscillator for energy-harvesting BLE radios with 14.2nJ startup energy and 31.8pW steady-state power
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用于能量收集 BLE 无线电的免调节低于 0.5V 16/24MHz 晶体振荡器，具有 14.2nJ 启动能量和 31.8pW 稳态功率
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
R. Martins
中科院分区：
文献类型：
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作者：
Ka;Pui;M. Law;R. Martins
本文报告了一种用于蓝牙低功耗（BLE）无线电[1]的免调节亚0.5V晶体振荡器（XO），它可以通过收集环境能量来自供电，从而避免临时电源转换器的损耗和成本。提出了一种由可扩展自参考啁啾注入（SSCI）辅助的超低电压双模gm方案（图3.2.1），以使XO在启动和稳态下克服0.5V以下不恒定VDD下的工作挑战（例如热电[2]，依赖于± 80 mV/K）。实现了与不同晶体（16/24 MHz）的兼容性，同时具有比现有技术更低的启动能量（14.2nJ）和稳态功率（31μW）[3-5]。
This paper reports a regulation-free sub-0.5V crystal oscillator (XO) for Bluetooth Low-Energy (BLE) radios [1] that can be self-powered by harvesting the ambient energies, avoiding the loss and cost of the interim power converters. An ultra-low-voltage Dual-Mode gm Scheme assisted by Scalable Self-reference Chirp Injection (SSCI) is proposed (Fig. 3.2.1) for the XO to surmount the operating challenges under an inconstant sub-0.5V VDD (e.g. thermoelectric [2], ∼80mV/K dependence) in both startup and steady states. Compatibility with different crystals (16/24MHz) is achieved, together with lower startup energy (14.2nJ) and steady-state power (31μW) than the recent art [3-5].