{"title":"A 13-nW Voltage Reference with Orthogonal Trimming of Absolute Value and Temperature Coefficient","authors":"J. A. Lima, F. Dualibe","doi":"10.1109/LASCAS.2019.8667569","DOIUrl":null,"url":null,"abstract":"An all-MOSFET voltage reference generator (VRG) with innovative trimming that orthogonally adjusts V<inf>REF</inf> and temperature coefficient (TC) has been designed in 0.18μm CMOS process. The circuit works from V<inf>DD</inf> = 0.5V, featuring V<inf>REF</inf>=239.9mV and TC =14.6ppm/°C. SPICE data reveal, for 0.5V ≤ VDD ≤ 1.5V, -40°C ≤ T ≤ 120°C and over all corners, post-trimming maximum spread of 1.63% and 34.5ppm/°C, respectively for ΔV<inf>REF</inf>/V<inf>REF</inf> and TC. Typically, consumption is only 13nW@120°C. Line regulation of 0.21%/V and rejection to supply-line noise of 115.5dB@100MHz are also predicted. Monte Carlo reveals post-trim 0.9% (3σ) accurate VREF.","PeriodicalId":142430,"journal":{"name":"2019 IEEE 10th Latin American Symposium on Circuits & Systems (LASCAS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 IEEE 10th Latin American Symposium on Circuits & Systems (LASCAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/LASCAS.2019.8667569","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
An all-MOSFET voltage reference generator (VRG) with innovative trimming that orthogonally adjusts VREF and temperature coefficient (TC) has been designed in 0.18μm CMOS process. The circuit works from VDD = 0.5V, featuring VREF=239.9mV and TC =14.6ppm/°C. SPICE data reveal, for 0.5V ≤ VDD ≤ 1.5V, -40°C ≤ T ≤ 120°C and over all corners, post-trimming maximum spread of 1.63% and 34.5ppm/°C, respectively for ΔVREF/VREF and TC. Typically, consumption is only 13nW@120°C. Line regulation of 0.21%/V and rejection to supply-line noise of 115.5dB@100MHz are also predicted. Monte Carlo reveals post-trim 0.9% (3σ) accurate VREF.
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