{"title":"A sub-1V picowatt voltage reference with improved PSRR and line sensitivity for wearable biomedical applications","authors":"Yilun Jin, Yuhang Zhang, Lining Hu, Zhiwen Gu, Jian Zhao, Yan Liu, Yongwei Lou, Yongfu Li, Zhihong Luo, Yanhan Zeng","doi":"10.1007/s10470-023-02187-3","DOIUrl":null,"url":null,"abstract":"<div><p>This paper presents a picowatt voltage reference circuit using a voltage regulation scheme consisting of a self-regulation native <i>N</i>-type transistor, a double regulation topology formed by a stacked structure of two native <i>N</i>-type transistors, and a <i>P</i>-type transistor-based self-biased current source, to feed a diode-connected <i>P</i>-type load and a PNP transistor load. This improves the line sensitivity and the power supply rejection ratio (PSRR) without the use of an on-chip capacitor. The circuit is designed in a 180 nm CMOS process with an area of 13,700 μm<sup>2</sup> and operates with a minimum supply voltage of 0.8 V. Post layout simulation results show that the circuit provides a constant output voltage of 160.2 mV with a temperature coefficient (TC) of 151.6 ppm/<span>\\(^{\\circ }\\)</span>C from 0 to 100 <span>\\(^{\\circ }\\)</span>C, a line sensitivity of 0.00114%/V, a PSRR of <span>\\(-\\)</span>72.6 dB at 100 Hz, and an untrimmed voltage accuracy (<span>\\(\\upsigma /\\upmu\\)</span>) of 0.99%.</p></div>","PeriodicalId":7827,"journal":{"name":"Analog Integrated Circuits and Signal Processing","volume":null,"pages":null},"PeriodicalIF":1.2000,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Analog Integrated Circuits and Signal Processing","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10470-023-02187-3","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"COMPUTER SCIENCE, HARDWARE & ARCHITECTURE","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents a picowatt voltage reference circuit using a voltage regulation scheme consisting of a self-regulation native N-type transistor, a double regulation topology formed by a stacked structure of two native N-type transistors, and a P-type transistor-based self-biased current source, to feed a diode-connected P-type load and a PNP transistor load. This improves the line sensitivity and the power supply rejection ratio (PSRR) without the use of an on-chip capacitor. The circuit is designed in a 180 nm CMOS process with an area of 13,700 μm2 and operates with a minimum supply voltage of 0.8 V. Post layout simulation results show that the circuit provides a constant output voltage of 160.2 mV with a temperature coefficient (TC) of 151.6 ppm/\(^{\circ }\)C from 0 to 100 \(^{\circ }\)C, a line sensitivity of 0.00114%/V, a PSRR of \(-\)72.6 dB at 100 Hz, and an untrimmed voltage accuracy (\(\upsigma /\upmu\)) of 0.99%.
期刊介绍:
Analog Integrated Circuits and Signal Processing is an archival peer reviewed journal dedicated to the design and application of analog, radio frequency (RF), and mixed signal integrated circuits (ICs) as well as signal processing circuits and systems. It features both new research results and tutorial views and reflects the large volume of cutting-edge research activity in the worldwide field today.
A partial list of topics includes analog and mixed signal interface circuits and systems; analog and RFIC design; data converters; active-RC, switched-capacitor, and continuous-time integrated filters; mixed analog/digital VLSI systems; wireless radio transceivers; clock and data recovery circuits; and high speed optoelectronic circuits and systems.