{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,25]],"date-time":"2025-10-25T19:07:23Z","timestamp":1761419243993,"version":"3.37.3"},"reference-count":16,"publisher":"World Scientific Pub Co Pte Ltd","issue":"10","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J CIRCUIT SYST COMP"],"published-print":{"date-parts":[[2019,9]]},"abstract":"<jats:p> This paper explains the hidden positive feedback in a two-stage fully differential amplifier through external feedback resistors and possible DC latch-up during the amplifier start-up. The biasing current selection among the cascade branches has been explained intuitively, with reference to previous literature. To avoid the latch-up problem, irrespective of the transistor bias currents, a novel hysteresis-based start-up circuit is proposed. An 87[Formula: see text]dB, 250[Formula: see text]MHz unity gain bandwidth amplifier has been developed in 65[Formula: see text]nm CMOS Technology and post-layout simulations demonstrate no start-up failures out of 1000 Monte-Carlo (6-Sigma) simulations. The circuit draws 126[Formula: see text][Formula: see text]A from a 1.2[Formula: see text]V supply and occupies the 2184[Formula: see text][Formula: see text]m<jats:sup>2<\/jats:sup> area. <\/jats:p>","DOI":"10.1142\/s0218126619501640","type":"journal-article","created":{"date-parts":[[2018,10,8]],"date-time":"2018-10-08T02:32:17Z","timestamp":1538965937000},"page":"1950164","source":"Crossref","is-referenced-by-count":27,"title":["A Start-up Assisted Fully Differential Folded Cascode Opamp"],"prefix":"10.1142","volume":"28","author":[{"given":"R.","family":"Nagulapalli","sequence":"first","affiliation":[{"name":"School of Engineering, Computing and Mathematics, Oxford Brookes University, Wheatley Campus, Wheatley, Oxford OX33 1HX, UK"}]},{"given":"K.","family":"Hayatleh","sequence":"additional","affiliation":[{"name":"School of Engineering, Computing and Mathematics, Oxford Brookes University, Wheatley Campus, Wheatley, Oxford OX33 1HX, UK"}]},{"given":"S.","family":"Barker","sequence":"additional","affiliation":[{"name":"School of Engineering, Computing and Mathematics, Oxford Brookes University, Wheatley Campus, Wheatley, Oxford OX33 1HX, UK"}]},{"given":"B.","family":"Yassine","sequence":"additional","affiliation":[{"name":"Farr Institute for Health Informatics Research, University College London, 222 Euston Road, London NW1 2DA, UK"}]},{"given":"S.","family":"Zourob","sequence":"additional","affiliation":[{"name":"School of Engineering, Computing and Mathematics, Oxford Brookes University, Wheatley Campus, Wheatley, Oxford OX33 1HX, UK"}]},{"given":"S.","family":"Raparthy","sequence":"additional","affiliation":[{"name":"School of Engineering, Computing and Mathematics, Oxford Brookes University, Wheatley Campus, Wheatley, Oxford OX33 1HX, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6738-7658","authenticated-orcid":false,"given":"N.","family":"Yassine","sequence":"additional","affiliation":[{"name":"School of Engineering, Computing and Mathematics, Oxford Brookes University, Wheatley Campus, Wheatley, Oxford OX33 1HX, UK"}]}],"member":"219","published-online":{"date-parts":[[2019,9,26]]},"reference":[{"key":"S0218126619501640BIB001","doi-asserted-by":"publisher","DOI":"10.1109\/JSSC.2004.837247"},{"key":"S0218126619501640BIB002","doi-asserted-by":"publisher","DOI":"10.1007\/1-4020-3885-2_13"},{"key":"S0218126619501640BIB003","doi-asserted-by":"publisher","DOI":"10.1007\/0-387-25747-0_4"},{"key":"S0218126619501640BIB004","doi-asserted-by":"publisher","DOI":"10.1049\/el:20060454"},{"key":"S0218126619501640BIB005","doi-asserted-by":"publisher","DOI":"10.1109\/ICECS.2003.1302033"},{"key":"S0218126619501640BIB006","doi-asserted-by":"publisher","DOI":"10.1109\/ISCAS.2018.8351346"},{"key":"S0218126619501640BIB007","doi-asserted-by":"publisher","DOI":"10.1109\/SSD.2012.6197983"},{"key":"S0218126619501640BIB008","doi-asserted-by":"publisher","DOI":"10.1109\/ICSCN.2017.8085720"},{"key":"S0218126619501640BIB009","doi-asserted-by":"publisher","DOI":"10.1049\/el.2015.1053"},{"key":"S0218126619501640BIB010","doi-asserted-by":"publisher","DOI":"10.1109\/TCSII.2016.2530518"},{"key":"S0218126619501640BIB011","doi-asserted-by":"publisher","DOI":"10.1109\/PRIME.2015.7251409"},{"key":"S0218126619501640BIB012","doi-asserted-by":"publisher","DOI":"10.1109\/JSSC.2002.803055"},{"key":"S0218126619501640BIB013","doi-asserted-by":"publisher","DOI":"10.1109\/ICRAECT.2017.17"},{"key":"S0218126619501640BIB014","doi-asserted-by":"publisher","DOI":"10.1109\/ISCAS.2015.7168687"},{"key":"S0218126619501640BIB015","doi-asserted-by":"publisher","DOI":"10.1109\/JSSC.1986.1052648"},{"key":"S0218126619501640BIB016","doi-asserted-by":"publisher","DOI":"10.1109\/ICECCT.2017.8117953"}],"container-title":["Journal of Circuits, Systems and Computers"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.worldscientific.com\/doi\/pdf\/10.1142\/S0218126619501640","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,9,26]],"date-time":"2019-09-26T03:12:31Z","timestamp":1569467551000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.worldscientific.com\/doi\/abs\/10.1142\/S0218126619501640"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,9]]},"references-count":16,"journal-issue":{"issue":"10","published-print":{"date-parts":[[2019,9]]}},"alternative-id":["10.1142\/S0218126619501640"],"URL":"https:\/\/doi.org\/10.1142\/s0218126619501640","relation":{},"ISSN":["0218-1266","1793-6454"],"issn-type":[{"type":"print","value":"0218-1266"},{"type":"electronic","value":"1793-6454"}],"subject":[],"published":{"date-parts":[[2019,9]]}}}