{"id":"https://openalex.org/W1500249877","doi":"https://doi.org/10.1109/iscas.2015.7168618","title":"Class AB two stage and folded cascode OpAmps based on a squaring circuit","display_name":"Class AB two stage and folded cascode OpAmps based on a squaring circuit","publication_year":2015,"publication_date":"2015-05-01","ids":{"openalex":"https://openalex.org/W1500249877","doi":"https://doi.org/10.1109/iscas.2015.7168618","mag":"1500249877"},"language":"en","primary_location":{"id":"doi:10.1109/iscas.2015.7168618","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iscas.2015.7168618","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 IEEE International Symposium on Circuits and Systems (ISCAS)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5007752714","display_name":"M. R. Valero","orcid":"https://orcid.org/0000-0002-9416-7092"},"institutions":[{"id":"https://openalex.org/I255234318","display_name":"Universidad de Zaragoza","ror":"https://ror.org/012a91z28","country_code":"ES","type":"education","lineage":["https://openalex.org/I255234318"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"M. R. Valero","raw_affiliation_strings":["Group of Electronic Design - I3A, University of Zaragoza, Zaragoza, Spain","Group of Electronic Design -I3 A, University of Zaragoza, Zaragoza, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Group of Electronic Design - I3A, University of Zaragoza, Zaragoza, Spain","institution_ids":["https://openalex.org/I255234318"]},{"raw_affiliation_string":"Group of Electronic Design -I3 A, University of Zaragoza, Zaragoza, Spain","institution_ids":["https://openalex.org/I255234318"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084248588","display_name":"Antonio J. L\u00f3pez\u2010Mart\u00edn","orcid":"https://orcid.org/0000-0001-7629-0305"},"institutions":[{"id":"https://openalex.org/I10052268","display_name":"New Mexico State University","ror":"https://ror.org/00hpz7z43","country_code":"US","type":"education","lineage":["https://openalex.org/I10052268"]},{"id":"https://openalex.org/I175051016","display_name":"Universidad P\u00fablica de Navarra (UPNA)","ror":"https://ror.org/02z0cah89","country_code":"ES","type":"education","lineage":["https://openalex.org/I175051016"]},{"id":"https://openalex.org/I88155538","display_name":"Universidad de Navarra","ror":"https://ror.org/02rxc7m23","country_code":"ES","type":"education","lineage":["https://openalex.org/I88155538"]}],"countries":["ES","US"],"is_corresponding":false,"raw_author_name":"Antonio Lopez-Martin","raw_affiliation_strings":["Klipsch School of Electrical and Computer Engineering, New Mexico State University, Las Cruces, NM, USA","Dept. of Electronics & Electronic Engineering, Public University of Navarra, Pamplona, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Klipsch School of Electrical and Computer Engineering, New Mexico State University, Las Cruces, NM, USA","institution_ids":["https://openalex.org/I10052268"]},{"raw_affiliation_string":"Dept. of Electronics & Electronic Engineering, Public University of Navarra, Pamplona, Spain","institution_ids":["https://openalex.org/I175051016","https://openalex.org/I88155538"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5012835815","display_name":"S. Thoutam","orcid":null},"institutions":[{"id":"https://openalex.org/I10052268","display_name":"New Mexico State University","ror":"https://ror.org/00hpz7z43","country_code":"US","type":"education","lineage":["https://openalex.org/I10052268"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Shanta Thoutam","raw_affiliation_strings":["Klipsch School of Electrical and Computer Engineering, New Mexico State University, Las Cruces, NM, USA","Klipsch School of Electrical and Computer Engineering, New Mexico State University Las Cruces, NM, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Klipsch School of Electrical and Computer Engineering, New Mexico State University, Las Cruces, NM, USA","institution_ids":["https://openalex.org/I10052268"]},{"raw_affiliation_string":"Klipsch School of Electrical and Computer Engineering, New Mexico State University Las Cruces, NM, USA","institution_ids":["https://openalex.org/I10052268"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5045738320","display_name":"J. Ram\u0131\u0301rez-Angulo","orcid":"https://orcid.org/0000-0001-5977-616X"},"institutions":[{"id":"https://openalex.org/I10052268","display_name":"New Mexico State University","ror":"https://ror.org/00hpz7z43","country_code":"US","type":"education","lineage":["https://openalex.org/I10052268"]},{"id":"https://openalex.org/I175051016","display_name":"Universidad P\u00fablica de Navarra (UPNA)","ror":"https://ror.org/02z0cah89","country_code":"ES","type":"education","lineage":["https://openalex.org/I175051016"]},{"id":"https://openalex.org/I88155538","display_name":"Universidad de Navarra","ror":"https://ror.org/02rxc7m23","country_code":"ES","type":"education","lineage":["https://openalex.org/I88155538"]}],"countries":["ES","US"],"is_corresponding":false,"raw_author_name":"Jaime Ramirez-Angulo","raw_affiliation_strings":["Dept. of Electronics & Electronic Engineering, Public University of Navarra, Pamplona, Spain","Klipsch School of Electrical and Computer Engineering, New Mexico State University Las Cruces, NM, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Electronics & Electronic Engineering, Public University of Navarra, Pamplona, Spain","institution_ids":["https://openalex.org/I175051016","https://openalex.org/I88155538"]},{"raw_affiliation_string":"Klipsch School of Electrical and Computer Engineering, New Mexico State University Las Cruces, NM, USA","institution_ids":["https://openalex.org/I10052268"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5089442866","display_name":"R.G. Carvajal","orcid":"https://orcid.org/0000-0003-3891-8987"},"institutions":[{"id":"https://openalex.org/I79238269","display_name":"Universidad de Sevilla","ror":"https://ror.org/03yxnpp24","country_code":"ES","type":"education","lineage":["https://openalex.org/I79238269"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Ramon G. Carvajal","raw_affiliation_strings":["Dept. of Electronic Engineering, University of Sevilla, Sevilla, Spain","Dept. of Electronic Eng., University of Sevilla, Sevilla, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Electronic Engineering, University of Sevilla, Sevilla, Spain","institution_ids":["https://openalex.org/I79238269"]},{"raw_affiliation_string":"Dept. of Electronic Eng., University of Sevilla, Sevilla, Spain","institution_ids":["https://openalex.org/I79238269"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.02060973,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"43","issue":null,"first_page":"253","last_page":"256"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10323","display_name":"Analog and Mixed-Signal Circuit Design","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10323","display_name":"Analog and Mixed-Signal Circuit Design","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10187","display_name":"Radio Frequency Integrated Circuit Design","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10558","display_name":"Advancements in Semiconductor Devices and Circuit Design","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/slew-rate","display_name":"Slew rate","score":0.8989919424057007},{"id":"https://openalex.org/keywords/operational-amplifier","display_name":"Operational amplifier","score":0.8804841041564941},{"id":"https://openalex.org/keywords/cascode","display_name":"Cascode","score":0.6633058786392212},{"id":"https://openalex.org/keywords/common-mode-rejection-ratio","display_name":"Common-mode rejection ratio","score":0.6282033920288086},{"id":"https://openalex.org/keywords/current-mirror","display_name":"Current mirror","score":0.5662293434143066},{"id":"https://openalex.org/keywords/cmos","display_name":"CMOS","score":0.5094669461250305},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.49596962332725525},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.4646458327770233},{"id":"https://openalex.org/keywords/power-supply-rejection-ratio","display_name":"Power supply rejection ratio","score":0.4323456287384033},{"id":"https://openalex.org/keywords/voltage","display_name":"Voltage","score":0.41058778762817383},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3701191246509552},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.3197072744369507},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.307995080947876},{"id":"https://openalex.org/keywords/amplifier","display_name":"Amplifier","score":0.2769022583961487},{"id":"https://openalex.org/keywords/transistor","display_name":"Transistor","score":0.24490776658058167}],"concepts":[{"id":"https://openalex.org/C82517063","wikidata":"https://www.wikidata.org/wiki/Q1591315","display_name":"Slew rate","level":3,"score":0.8989919424057007},{"id":"https://openalex.org/C145366948","wikidata":"https://www.wikidata.org/wiki/Q178947","display_name":"Operational amplifier","level":4,"score":0.8804841041564941},{"id":"https://openalex.org/C2775946640","wikidata":"https://www.wikidata.org/wiki/Q1735017","display_name":"Cascode","level":4,"score":0.6633058786392212},{"id":"https://openalex.org/C102309569","wikidata":"https://www.wikidata.org/wiki/Q1244941","display_name":"Common-mode rejection ratio","level":5,"score":0.6282033920288086},{"id":"https://openalex.org/C173966970","wikidata":"https://www.wikidata.org/wiki/Q786012","display_name":"Current mirror","level":4,"score":0.5662293434143066},{"id":"https://openalex.org/C46362747","wikidata":"https://www.wikidata.org/wiki/Q173431","display_name":"CMOS","level":2,"score":0.5094669461250305},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.49596962332725525},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.4646458327770233},{"id":"https://openalex.org/C15892472","wikidata":"https://www.wikidata.org/wiki/Q1482413","display_name":"Power supply rejection ratio","level":4,"score":0.4323456287384033},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.41058778762817383},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3701191246509552},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.3197072744369507},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.307995080947876},{"id":"https://openalex.org/C194257627","wikidata":"https://www.wikidata.org/wiki/Q211554","display_name":"Amplifier","level":3,"score":0.2769022583961487},{"id":"https://openalex.org/C172385210","wikidata":"https://www.wikidata.org/wiki/Q5339","display_name":"Transistor","level":3,"score":0.24490776658058167},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/iscas.2015.7168618","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iscas.2015.7168618","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 IEEE International Symposium on Circuits and Systems (ISCAS)","raw_type":"proceedings-article"},{"id":"pmh:oai:research-information.bris.ac.uk:openaire_cris_publications/5d2cb896-6c20-4850-ada9-13a60c0105df","is_oa":false,"landing_page_url":"https://research-information.bris.ac.uk/en/publications/5d2cb896-6c20-4850-ada9-13a60c0105df","pdf_url":null,"source":{"id":"https://openalex.org/S4306400895","display_name":"Bristol Research (University of Bristol)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I36234482","host_organization_name":"University of Bristol","host_organization_lineage":["https://openalex.org/I36234482"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Valero, M R, Lopez-Martin, A, Thoutam, S, Ramirez-Angulo, J & Carvajal, R G 2015, Class AB two stage and folded cascode OpAmps based on a squaring circuit. in 2015 IEEE International Symposium on Circuits and Systems, ISCAS 2015., 7168618, Proceedings - IEEE International Symposium on Circuits and Systems, vol. 2015-July, Institute of Electrical and Electronics Engineers (IEEE), pp. 253-256. https://doi.org/10.1109/ISCAS.2015.7168618","raw_type":"contributionToPeriodical"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","score":0.800000011920929,"id":"https://metadata.un.org/sdg/7"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W1546726434","https://openalex.org/W1568895036","https://openalex.org/W1835208977","https://openalex.org/W1973366835","https://openalex.org/W2012963133","https://openalex.org/W2022875112","https://openalex.org/W2083295694","https://openalex.org/W2105411079","https://openalex.org/W2122110207","https://openalex.org/W2138289226","https://openalex.org/W2138536318","https://openalex.org/W2142100952","https://openalex.org/W4245182418","https://openalex.org/W6634247919"],"related_works":["https://openalex.org/W1594375429","https://openalex.org/W2101478330","https://openalex.org/W1969187278","https://openalex.org/W2115314666","https://openalex.org/W1928260118","https://openalex.org/W2130839217","https://openalex.org/W1506985832","https://openalex.org/W1997768895","https://openalex.org/W2488316733","https://openalex.org/W1917798115","https://openalex.org/W1987215613","https://openalex.org/W1500845134","https://openalex.org/W2053521511","https://openalex.org/W1904798882","https://openalex.org/W1555948307","https://openalex.org/W1992294112","https://openalex.org/W2003432443","https://openalex.org/W1501454396","https://openalex.org/W2168161831","https://openalex.org/W2146077743"],"abstract_inverted_index":{"This":[0],"paper":[1],"presents":[2],"a":[3,34,41,55,73,81],"novel":[4],"adaptive":[5],"bias":[6],"technique":[7],"based":[8],"on":[9],"the":[10,16,49,86,89,97,100],"use":[11],"of":[12,19,48,88,99],"squaring":[13],"circuits.":[14],"Here,":[15],"tail":[17,36,82],"current":[18,37,83,118,133],"an":[20,27],"operational":[21],"amplifier":[22],"(OpAmp)":[23],"is":[24,46,77],"controlled":[25],"using":[26],"auxiliary":[28],"circuit.":[29],"By":[30],"design,":[31],"it":[32,79],"generates":[33,80],"well-controlled":[35],"which":[38],"-":[39,45],"to":[40,85],"first":[42],"order":[43],"approximation":[44],"independent":[47],"OpAmp's":[50,90,101],"common-mode":[51,59],"input":[52,75,92,102],"voltage.":[53,93],"As":[54],"result,":[56],"parameters":[57],"like":[58],"rejection":[60,66],"ratio":[61,67],"(CMRR)":[62],"and":[63,119,126],"power":[64],"supply":[65],"(PSRR)":[68],"are":[69,104],"enhanced.":[70],"However,":[71],"when":[72],"differential":[74,91],"signal":[76],"applied,":[78],"proportional":[84],"square":[87],"In":[94],"this":[95],"way,":[96],"currents":[98],"pairs":[103],"boosted,":[105],"thus":[106],"improving":[107],"slew":[108,120],"rate.":[109],"Experimental":[110],"results":[111],"in":[112],"0.5":[113],"\u03bcm":[114],"CMOS":[115],"technology":[116],"verify":[117],"rate":[121],"enhancement":[122],"factors":[123],"between":[124],"10":[125],"15":[127],"with":[128],"less":[129],"than":[130],"20%":[131],"static":[132],"increase.":[134]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2020,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}