用于微型传感器节点的635pW电池电压监控电路

Inhee Lee, S. Bang, Yoonmyung Lee, Yejoong Kim, Gyouho Kim, D. Sylvester, D. Blaauw
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引用次数: 11

摘要

我们提出了一种用于微尺度传感器系统的低功率电池电压监控电路,该电路提供上电复位、断电检测和恢复检测,以防止故障和电池损坏。超低功耗采用57 pA快速稳定两级基准电压和81 pA基于泄漏的振荡器和时钟比较器实现。监控器采用180nm CMOS工艺制造,并集成了一个完整的1mm3传感器系统。它在3.6 V电源电压下消耗635 pW,比之前最好的工作降低了850倍。
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A 635pW battery voltage supervisory circuit for miniature sensor nodes
We propose a low power battery voltage supervisory circuit for micro-scale sensor systems that provides power-on reset, brown-out detection, and recovery detection to prevent malfunction and battery damage. Ultra-low power is achieved using a 57 pA, fast stabilizing two-stage voltage reference and an 81 pA leakage-based oscillator and clocked comparator. The supervisor was fabricated in 180 nm CMOS and integrated with a complete 1 mm3 sensor system. It consumes 635 pW at 3.6 V supply voltage, which is an 850× reduction over the best prior work.
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