Inhee Lee, Eunseong Moon, Yejoong Kim, J. Phillips, D. Blaauw
{"title":"A 10mm3 Light-Dose Sensing IoT2 System With 35-To-339nW 10-To-300klx Light-Dose-To-Digital Converter","authors":"Inhee Lee, Eunseong Moon, Yejoong Kim, J. Phillips, D. Blaauw","doi":"10.23919/VLSIC.2019.8778007","DOIUrl":null,"url":null,"abstract":"This paper presents a 10mm3 Internet-of-Tiny-Things (IoT2) system that measures light dose using custom photovoltaic cells and a light-dose-to-digital converter (LDDC). The LDDC nulls diode leakage for temperature stability and creates headroom without power overhead by dual forward-biased photovoltaic cells. It also adaptively updates the current mirror ratio and accumulation weighting factor for a low, near-constant power consumption. The system can operate energy-autonomously at $\\gt 500$ lx light level. The LDDC achieves $\\mathrm {a}3 \\sigma $ inaccuracy of ±3.8% and $\\sigma / \\mu $ of 2.4% across a wide light intensity range from 10lx to 300klx while consuming only 35 – 339nW.","PeriodicalId":6707,"journal":{"name":"2019 Symposium on VLSI Circuits","volume":"42 1","pages":"C180-C181"},"PeriodicalIF":0.0000,"publicationDate":"2019-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 Symposium on VLSI Circuits","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.23919/VLSIC.2019.8778007","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 8
Abstract
This paper presents a 10mm3 Internet-of-Tiny-Things (IoT2) system that measures light dose using custom photovoltaic cells and a light-dose-to-digital converter (LDDC). The LDDC nulls diode leakage for temperature stability and creates headroom without power overhead by dual forward-biased photovoltaic cells. It also adaptively updates the current mirror ratio and accumulation weighting factor for a low, near-constant power consumption. The system can operate energy-autonomously at $\gt 500$ lx light level. The LDDC achieves $\mathrm {a}3 \sigma $ inaccuracy of ±3.8% and $\sigma / \mu $ of 2.4% across a wide light intensity range from 10lx to 300klx while consuming only 35 – 339nW.
本文介绍了一个10mm3的微型物联网(IoT2)系统，该系统使用定制光伏电池和光剂量-数字转换器(LDDC)测量光剂量。LDDC为温度稳定性消除二极管泄漏，并通过双正向偏置光伏电池创造无功率开销的净空空间。它还可以自适应地更新当前镜像比率和累积权重因子，以实现低且接近恒定的功耗。该系统可以在$\gt 500$ lx光级下自主运行。LDDC达到$\mathrm {a}3 \sigma $±3.8的误差% and $\sigma / \mu $ of 2.4% across a wide light intensity range from 10lx to 300klx while consuming only 35 – 339nW.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
