A low power and fast wake up circuit
A low power and fast wake up circuit
复制标题
低功耗快速唤醒电路
DOI：
10.1109/iscas.2004.1329266
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Wen
中科院分区：
文献类型：
--
作者：
Hung;Wen
本文提出了一种低功耗快速唤醒RC振荡器，它包括一个POR电路来检测电源状态，一个常数Gm用来产生环形RC振荡器的偏置，以及一个时钟控制单元来保证稳定的时钟频率输出。设计并仿真了一个1.2MHz的RC振荡器。测试芯片采用0.18 /spl μ/m1 P3 M标准CMOS逻辑工艺制作。芯片面积为130 /spl mu/m/spl times/240 /spl mu/m。测试结果表明，在1.5V电源下，RC振荡器的唤醒时间为3 /spl mu/s，功耗为27 /spl mu/W。因此，RC振荡器适合作为低功耗便携式系统的嵌入式唤醒电路。
This paper proposes a low power and fast waked up RC-oscillator that includes a POR circuit to detect the statue of the power supply, a const-Gm is used to generate the bias of a ring RC-oscillator and a clock control unit to ensure stable clock frequency output. A 1.2 MHz RC-oscillator has been designed and simulated. The test chip is fabricated in a 0.18 /spl mu/m 1P3M standard CMOS logical process. The chip area is 130 /spl mu/m/spl times/240 /spl mu/m. Measurement results show the RC-oscillator with 3 /spl mu/s waked up time and 27 /spl mu/W power consumption for the 1.5 V power supply. Thus, the RC-oscillator is suitable as embedded wake-up circuit for the low power portable system.