{"title":"具有2.93 μJ/周能量效率和0.068%周期抖动的180nm CMOS双斜率增强弛豫振荡器","authors":"Yongjuan Shi;Xun Liu;Chen Hu;Xiyuan Tang;Junmin Jiang","doi":"10.1109/TCSI.2025.3557560","DOIUrl":null,"url":null,"abstract":"This paper presents a 2MHz relaxation oscillator designed for ultra-low power internet-of-things (IoT) applications. Dynamic comparator with dual slope booster (DSB) is utilized to decrease the output jitter of oscillating frequency. A feedback loop with cascaded floating inverter amplifier (FIA) is adopted such that 1) the requirement of comparator speed is significantly alleviated and 2) the power consumption of the amplifier is further reduced. The proposed relaxation oscillator was fabricated in a 180nm CMOS process and occupies only 0.1mm<sup>2</sup> active area. The measurement results with 8 samples show that the average power consumption is <inline-formula> <tex-math>$2.93\\mu $ </tex-math></inline-formula>J/cycle (<inline-formula> <tex-math>$\\mu $ </tex-math></inline-formula>W/MHz) at 1V supply voltage at room temperature. The average standard variation of the period jitter is 345ps, which is 0.068% of 500ns typical oscillation period (<inline-formula> <tex-math>$T_{\\mathrm {OSC}}$ </tex-math></inline-formula>). The measured temperature coefficient is 128ppm/°C within the 0 to 90°C range, and the voltage variation is 0.74%/0.1V from 0.95V to 1.15V. It scores a high phase noise figure-of-merit of 148dBc/Hz at 10kHz offset frequency.","PeriodicalId":13039,"journal":{"name":"IEEE Transactions on Circuits and Systems I: Regular Papers","volume":"72 6","pages":"2520-2528"},"PeriodicalIF":5.2000,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Dual Slope Boosted Relaxation Oscillator With 2.93 μJ/Cycle Energy Efficiency and 0.068% Period Jitter in 180 nm CMOS\",\"authors\":\"Yongjuan Shi;Xun Liu;Chen Hu;Xiyuan Tang;Junmin Jiang\",\"doi\":\"10.1109/TCSI.2025.3557560\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper presents a 2MHz relaxation oscillator designed for ultra-low power internet-of-things (IoT) applications. Dynamic comparator with dual slope booster (DSB) is utilized to decrease the output jitter of oscillating frequency. A feedback loop with cascaded floating inverter amplifier (FIA) is adopted such that 1) the requirement of comparator speed is significantly alleviated and 2) the power consumption of the amplifier is further reduced. The proposed relaxation oscillator was fabricated in a 180nm CMOS process and occupies only 0.1mm<sup>2</sup> active area. The measurement results with 8 samples show that the average power consumption is <inline-formula> <tex-math>$2.93\\\\mu $ </tex-math></inline-formula>J/cycle (<inline-formula> <tex-math>$\\\\mu $ </tex-math></inline-formula>W/MHz) at 1V supply voltage at room temperature. The average standard variation of the period jitter is 345ps, which is 0.068% of 500ns typical oscillation period (<inline-formula> <tex-math>$T_{\\\\mathrm {OSC}}$ </tex-math></inline-formula>). The measured temperature coefficient is 128ppm/°C within the 0 to 90°C range, and the voltage variation is 0.74%/0.1V from 0.95V to 1.15V. It scores a high phase noise figure-of-merit of 148dBc/Hz at 10kHz offset frequency.\",\"PeriodicalId\":13039,\"journal\":{\"name\":\"IEEE Transactions on Circuits and Systems I: Regular Papers\",\"volume\":\"72 6\",\"pages\":\"2520-2528\"},\"PeriodicalIF\":5.2000,\"publicationDate\":\"2025-04-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Transactions on Circuits and Systems I: Regular Papers\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10964432/\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Circuits and Systems I: Regular Papers","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10964432/","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
A Dual Slope Boosted Relaxation Oscillator With 2.93 μJ/Cycle Energy Efficiency and 0.068% Period Jitter in 180 nm CMOS
This paper presents a 2MHz relaxation oscillator designed for ultra-low power internet-of-things (IoT) applications. Dynamic comparator with dual slope booster (DSB) is utilized to decrease the output jitter of oscillating frequency. A feedback loop with cascaded floating inverter amplifier (FIA) is adopted such that 1) the requirement of comparator speed is significantly alleviated and 2) the power consumption of the amplifier is further reduced. The proposed relaxation oscillator was fabricated in a 180nm CMOS process and occupies only 0.1mm2 active area. The measurement results with 8 samples show that the average power consumption is $2.93\mu $ J/cycle ($\mu $ W/MHz) at 1V supply voltage at room temperature. The average standard variation of the period jitter is 345ps, which is 0.068% of 500ns typical oscillation period ($T_{\mathrm {OSC}}$ ). The measured temperature coefficient is 128ppm/°C within the 0 to 90°C range, and the voltage variation is 0.74%/0.1V from 0.95V to 1.15V. It scores a high phase noise figure-of-merit of 148dBc/Hz at 10kHz offset frequency.
期刊介绍:
TCAS I publishes regular papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: - Circuits: Analog, Digital and Mixed Signal Circuits and Systems - Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic - Circuits and Systems, Power Electronics and Systems - Software for Analog-and-Logic Circuits and Systems - Control aspects of Circuits and Systems.