Yu Zeng, Taekwang Jang, Qing Dong, Mehdi Saligane, D. Sylvester, D. Blaauw
{"title":"用于物联网的1.7nW锁相环辅助电流注入32KHz晶体振荡器","authors":"Yu Zeng, Taekwang Jang, Qing Dong, Mehdi Saligane, D. Sylvester, D. Blaauw","doi":"10.23919/VLSIC.2017.8008551","DOIUrl":null,"url":null,"abstract":"This paper presents a PLL-assisted crystal oscillator using a current switching phase detector (PD) with intrinsic 90° phase offset for IoT applications. The PLL provides accurate pulse injection timing into the XO, sustaining its oscillation at only 100mV amplitude and ensuring robustness operation across PVT. This technique achieves high energy injection efficiency and avoids the use of power hungry amplifiers. Measured power is 1.7nW at room temperature and operation is demonstrated from −20–80°C and across 3 corner wafers.","PeriodicalId":176340,"journal":{"name":"2017 Symposium on VLSI Circuits","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"14","resultStr":"{\"title\":\"A 1.7nW PLL-assisted current injected 32KHz crystal oscillator for IoT\",\"authors\":\"Yu Zeng, Taekwang Jang, Qing Dong, Mehdi Saligane, D. Sylvester, D. Blaauw\",\"doi\":\"10.23919/VLSIC.2017.8008551\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper presents a PLL-assisted crystal oscillator using a current switching phase detector (PD) with intrinsic 90° phase offset for IoT applications. The PLL provides accurate pulse injection timing into the XO, sustaining its oscillation at only 100mV amplitude and ensuring robustness operation across PVT. This technique achieves high energy injection efficiency and avoids the use of power hungry amplifiers. Measured power is 1.7nW at room temperature and operation is demonstrated from −20–80°C and across 3 corner wafers.\",\"PeriodicalId\":176340,\"journal\":{\"name\":\"2017 Symposium on VLSI Circuits\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"14\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2017 Symposium on VLSI Circuits\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.23919/VLSIC.2017.8008551\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 Symposium on VLSI Circuits","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.23919/VLSIC.2017.8008551","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A 1.7nW PLL-assisted current injected 32KHz crystal oscillator for IoT
This paper presents a PLL-assisted crystal oscillator using a current switching phase detector (PD) with intrinsic 90° phase offset for IoT applications. The PLL provides accurate pulse injection timing into the XO, sustaining its oscillation at only 100mV amplitude and ensuring robustness operation across PVT. This technique achieves high energy injection efficiency and avoids the use of power hungry amplifiers. Measured power is 1.7nW at room temperature and operation is demonstrated from −20–80°C and across 3 corner wafers.
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