{"id":"https://openalex.org/W4360605796","doi":"https://doi.org/10.1109/isscc42615.2023.10067483","title":"A 7 pA/$\\surd\\text{Hz}$ Asymmetric Differential TIA for 100Gb/s PAM-4 links with \u221214dBm Optical Sensitivity in 16nm CMOS","display_name":"A 7 pA/$\\surd\\text{Hz}$ Asymmetric Differential TIA for 100Gb/s PAM-4 links with \u221214dBm Optical Sensitivity in 16nm CMOS","publication_year":2023,"publication_date":"2023-02-19","ids":{"openalex":"https://openalex.org/W4360605796","doi":"https://doi.org/10.1109/isscc42615.2023.10067483"},"language":"en","primary_location":{"id":"doi:10.1109/isscc42615.2023.10067483","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isscc42615.2023.10067483","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2023 IEEE International Solid- State Circuits Conference (ISSCC)","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/A5081178683","display_name":"K.R. Lakshmikumar","orcid":"https://orcid.org/0000-0001-7621-4177"},"institutions":[{"id":"https://openalex.org/I135428043","display_name":"Cisco Systems (United States)","ror":"https://ror.org/03yt1ez60","country_code":"US","type":"company","lineage":["https://openalex.org/I135428043"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Kadaba Lakshmikumar","raw_affiliation_strings":["CISCO Systems,Allentown,PA","CISCO Systems, Allentown, PA"],"affiliations":[{"raw_affiliation_string":"CISCO Systems,Allentown,PA","institution_ids":["https://openalex.org/I135428043"]},{"raw_affiliation_string":"CISCO Systems, Allentown, PA","institution_ids":["https://openalex.org/I135428043"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5091245784","display_name":"Alexander Kurylak","orcid":"https://orcid.org/0000-0003-1091-3375"},"institutions":[{"id":"https://openalex.org/I135428043","display_name":"Cisco Systems (United States)","ror":"https://ror.org/03yt1ez60","country_code":"US","type":"company","lineage":["https://openalex.org/I135428043"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Alexander Kurylak","raw_affiliation_strings":["CISCO Systems,Allentown,PA","CISCO Systems, Allentown, PA"],"affiliations":[{"raw_affiliation_string":"CISCO Systems,Allentown,PA","institution_ids":["https://openalex.org/I135428043"]},{"raw_affiliation_string":"CISCO Systems, Allentown, PA","institution_ids":["https://openalex.org/I135428043"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5014466863","display_name":"Romesh Kumar Nandwana","orcid":"https://orcid.org/0000-0003-0339-5792"},"institutions":[{"id":"https://openalex.org/I135428043","display_name":"Cisco Systems (United States)","ror":"https://ror.org/03yt1ez60","country_code":"US","type":"company","lineage":["https://openalex.org/I135428043"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Romesh Kumar Nandwana","raw_affiliation_strings":["CISCO Systems,Allentown,PA","CISCO Systems, Allentown, PA"],"affiliations":[{"raw_affiliation_string":"CISCO Systems,Allentown,PA","institution_ids":["https://openalex.org/I135428043"]},{"raw_affiliation_string":"CISCO Systems, Allentown, PA","institution_ids":["https://openalex.org/I135428043"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5071919389","display_name":"Bibhu Das","orcid":null},"institutions":[{"id":"https://openalex.org/I135428043","display_name":"Cisco Systems (United States)","ror":"https://ror.org/03yt1ez60","country_code":"US","type":"company","lineage":["https://openalex.org/I135428043"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Bibhu Das","raw_affiliation_strings":["CISCO Systems,Allentown,PA","CISCO Systems, Allentown, PA"],"affiliations":[{"raw_affiliation_string":"CISCO Systems,Allentown,PA","institution_ids":["https://openalex.org/I135428043"]},{"raw_affiliation_string":"CISCO Systems, Allentown, PA","institution_ids":["https://openalex.org/I135428043"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5065703008","display_name":"Joe Pampanin","orcid":null},"institutions":[{"id":"https://openalex.org/I135428043","display_name":"Cisco Systems (United States)","ror":"https://ror.org/03yt1ez60","country_code":"US","type":"company","lineage":["https://openalex.org/I135428043"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Joe Pampanin","raw_affiliation_strings":["CISCO Systems,Allentown,PA","CISCO Systems, Allentown, PA"],"affiliations":[{"raw_affiliation_string":"CISCO Systems,Allentown,PA","institution_ids":["https://openalex.org/I135428043"]},{"raw_affiliation_string":"CISCO Systems, Allentown, PA","institution_ids":["https://openalex.org/I135428043"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113544356","display_name":"Mike Brubaker","orcid":null},"institutions":[{"id":"https://openalex.org/I135428043","display_name":"Cisco Systems (United States)","ror":"https://ror.org/03yt1ez60","country_code":"US","type":"company","lineage":["https://openalex.org/I135428043"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Mike Brubaker","raw_affiliation_strings":["CISCO Systems,Allentown,PA","CISCO Systems, Allentown, PA"],"affiliations":[{"raw_affiliation_string":"CISCO Systems,Allentown,PA","institution_ids":["https://openalex.org/I135428043"]},{"raw_affiliation_string":"CISCO Systems, Allentown, PA","institution_ids":["https://openalex.org/I135428043"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5036789252","display_name":"Pavan Kumar Hanumolu","orcid":"https://orcid.org/0000-0002-6233-8934"},"institutions":[{"id":"https://openalex.org/I2801919071","display_name":"University of Illinois System","ror":"https://ror.org/05e94g991","country_code":"US","type":"education","lineage":["https://openalex.org/I2801919071"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Pavan Kumar Hanumolu","raw_affiliation_strings":["University of Illinois,Urbana,IL","University of Illinois, Urbana, IL"],"affiliations":[{"raw_affiliation_string":"University of Illinois,Urbana,IL","institution_ids":["https://openalex.org/I2801919071"]},{"raw_affiliation_string":"University of Illinois, Urbana, IL","institution_ids":["https://openalex.org/I2801919071"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":7,"corresponding_author_ids":["https://openalex.org/A5081178683"],"corresponding_institution_ids":["https://openalex.org/I135428043"],"apc_list":null,"apc_paid":null,"fwci":1.839,"has_fulltext":false,"cited_by_count":17,"citation_normalized_percentile":{"value":0.84105777,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"206","last_page":"208"},"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":0.9984999895095825,"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":0.9984999895095825,"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/T14117","display_name":"Integrated Circuits and Semiconductor Failure Analysis","score":0.9976000189781189,"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/T12153","display_name":"Advanced Optical Sensing Technologies","score":0.9972000122070312,"subfield":{"id":"https://openalex.org/subfields/3105","display_name":"Instrumentation"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/transimpedance-amplifier","display_name":"Transimpedance amplifier","score":0.927521824836731},{"id":"https://openalex.org/keywords/cmos","display_name":"CMOS","score":0.6685553193092346},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.6258227229118347},{"id":"https://openalex.org/keywords/resistor","display_name":"Resistor","score":0.49817633628845215},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.48322996497154236},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.46964117884635925},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.46347957849502563},{"id":"https://openalex.org/keywords/photodiode","display_name":"Photodiode","score":0.4605952501296997},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.4546199440956116},{"id":"https://openalex.org/keywords/differential-gain","display_name":"Differential gain","score":0.4233795702457428},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.42060402035713196},{"id":"https://openalex.org/keywords/amplifier","display_name":"Amplifier","score":0.3842063546180725},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.3238571286201477},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.32054603099823},{"id":"https://openalex.org/keywords/differential-amplifier","display_name":"Differential amplifier","score":0.30060020089149475},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.26153498888015747},{"id":"https://openalex.org/keywords/semiconductor","display_name":"Semiconductor","score":0.12176579236984253},{"id":"https://openalex.org/keywords/voltage","display_name":"Voltage","score":0.11070835590362549},{"id":"https://openalex.org/keywords/semiconductor-laser-theory","display_name":"Semiconductor laser theory","score":0.09179899096488953}],"concepts":[{"id":"https://openalex.org/C92631468","wikidata":"https://www.wikidata.org/wiki/Q215437","display_name":"Transimpedance amplifier","level":5,"score":0.927521824836731},{"id":"https://openalex.org/C46362747","wikidata":"https://www.wikidata.org/wiki/Q173431","display_name":"CMOS","level":2,"score":0.6685553193092346},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.6258227229118347},{"id":"https://openalex.org/C137488568","wikidata":"https://www.wikidata.org/wiki/Q5321","display_name":"Resistor","level":3,"score":0.49817633628845215},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.48322996497154236},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.46964117884635925},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.46347957849502563},{"id":"https://openalex.org/C751236","wikidata":"https://www.wikidata.org/wiki/Q175943","display_name":"Photodiode","level":2,"score":0.4605952501296997},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.4546199440956116},{"id":"https://openalex.org/C2780630149","wikidata":"https://www.wikidata.org/wiki/Q5275345","display_name":"Differential gain","level":4,"score":0.4233795702457428},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.42060402035713196},{"id":"https://openalex.org/C194257627","wikidata":"https://www.wikidata.org/wiki/Q211554","display_name":"Amplifier","level":3,"score":0.3842063546180725},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.3238571286201477},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.32054603099823},{"id":"https://openalex.org/C11722477","wikidata":"https://www.wikidata.org/wiki/Q1056298","display_name":"Differential amplifier","level":4,"score":0.30060020089149475},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.26153498888015747},{"id":"https://openalex.org/C108225325","wikidata":"https://www.wikidata.org/wiki/Q11456","display_name":"Semiconductor","level":2,"score":0.12176579236984253},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.11070835590362549},{"id":"https://openalex.org/C121477167","wikidata":"https://www.wikidata.org/wiki/Q17154002","display_name":"Semiconductor laser theory","level":3,"score":0.09179899096488953}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/isscc42615.2023.10067483","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isscc42615.2023.10067483","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2023 IEEE International Solid- State Circuits Conference (ISSCC)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","score":0.8700000047683716,"display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":5,"referenced_works":["https://openalex.org/W2760651611","https://openalex.org/W2912341949","https://openalex.org/W2980731328","https://openalex.org/W3199728213","https://openalex.org/W4280648985"],"related_works":["https://openalex.org/W2057745481","https://openalex.org/W3148950953","https://openalex.org/W1979703422","https://openalex.org/W1998109578","https://openalex.org/W2770299686","https://openalex.org/W4321140967","https://openalex.org/W2040135808","https://openalex.org/W2053095532","https://openalex.org/W2069843090","https://openalex.org/W1505253526"],"abstract_inverted_index":{"A":[0],"transimpedance":[1,465],"amplifier":[2],"(TIA)":[3],"is":[4,99,182,249,269,301,327,373,394,403,415,494],"a":[5,100,120,161,168,285,297,316,341,347,363],"critical":[6,445],"building":[7],"block":[8],"that":[9,85,104,231],"impacts":[10],"the":[11,33,56,87,91,95,105,109,117,126,131,136,143,149,152,158,186,191,208,212,223,232,239,254,258,262,272,278,310,320,331,386,416,426,435,440,450,454,459,463,473,478],"noise,":[12,165],"bandwidth,":[13,67],"and":[14,20,47,66,225,357,381,461,481],"power":[15,358],"consumption":[16],"of":[17,94,113,116,135,160,238,257,265,398,434,487],"intensity":[18],"modulation":[19],"direct":[21],"detection":[22],"(IMDD)":[23],"optical":[24],"links":[25],"used":[26,219],"in":[27,148,164,167,172,180,197,304,443],"data":[28],"centers.":[29],"CMOS":[30,306],"TIAs":[31],"using":[32,130],"shunt-feedback":[34],"(SF)":[35],"topology":[36],"(Fig.":[37,140],"12.2.1)":[38],"have":[39],"recently":[40],"been":[41,81],"shown":[42,196],"to":[43,50,73,89,124,206,211,220,227,252,318,472,497],"achieve":[44],"adequate":[45],"noise":[46,65,484],"bandwidth":[48,480],"performance":[49,76,442,493],"facilitate":[51],"100Gb/s":[52],"receivers":[53],"[1\u20134].":[54],"However,":[55,174,261,425],"SF-":[57],"TIA":[58,122,194,441,460,474,479,492],"suffers":[59],"from":[60],"debilitating":[61],"tradeoffs":[62],"between":[63],"its":[64,483],"which":[68,300,393],"make":[69],"it":[70],"fundamentally":[71],"challenging":[72],"improve":[74],"noise/bandwidth":[75],"beyond":[77],"what":[78,402],"has":[79,86],"already":[80],"achieved.":[82],"An":[83],"alternative":[84],"potential":[88],"overcome":[90],"fundamental":[92],"shortcomings":[93],"single-ended":[96],"(SE)":[97],"SF-TIA":[98],"differential":[101,121,193,491],"TIA.":[102],"Recognizing":[103],"SE-SF-TIA":[106],"only":[107,417],"uses":[108],"photo-current":[110],"flowing":[111,457],"out":[112,134],"one":[114],"terminal":[115,139],"photodiode":[118],"(PD),":[119],"seeks":[123],"double":[125],"signal":[127,153,204,455],"current":[128,132,145,210,290,456],"by":[129,155,243,271,277,315,330],"coming":[133],"PD's":[137],"other":[138],"12.2.1).":[141],"As":[142],"PD":[144,209,224,280],"also":[146],"flows":[147],"complementary":[150],"branch,":[151],"increases":[154],"6dB":[156],"at":[157,466],"cost":[159],"3dB":[162,170,177],"increase":[163,171],"resulting":[166],"theoretical":[169],"SNR.":[173],"achieving":[175,340,353],"this":[176,325],"SNR":[178],"improvement":[179],"practice":[181],"difficult.":[183],"To":[184],"understand":[185],"reasons":[187],"behind":[188],"it,":[189],"consider":[190],"conventional":[192],"as":[195,375,377],"Fig.":[198],"12.2.1.":[199],"It":[200],"employs":[201],"capacitively":[202],"coupled":[203],"paths":[205],"bring":[207],"TIAs.":[213],"Resistors":[214],"<tex":[215,235,244,266,286,292,336,343,349,365,370,378,382,412,422,431],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[216,236,245,267,287,293,337,344,350,366,371,379,383,413,423,432],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$\\mathrm{R}_{\\mathrm{B}1}(\\mathrm{R}_{\\mathrm{B}2})$</tex>":[217,268],"are":[218],"reverse":[221],"bias":[222,311],"need":[226],"be":[228,390],"chosen":[229],"such":[230],"corner":[233,388],"frequency":[234],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$(\\mathrm{F}_{\\mathrm{c}})$</tex>":[237],"high-pass":[240,387],"filter":[241],"formed":[242],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$\\mathrm{R}_{\\mathrm{B}1}\\cdot":[246],"\\mathrm{C}_{\\mathrm{C}1}(\\mathrm{R}_{\\mathrm{B}2}\\cdot":[247],"\\mathrm{C}_{\\mathrm{C}2})$</tex>":[248],"low":[250,342,364,406],"enough":[251],"pass":[253],"low-frequency":[255],"components":[256],"PAM-4":[259],"data.":[260],"maximum":[263],"value":[264],"limited":[270,329],"tolerable":[273],"voltage":[274,321],"drop":[275],"caused":[276],"average":[279,289],"current.":[281],"For":[282],"example,":[283],"even":[284],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$300\\mu\\mathrm{A}$</tex>":[288],"with":[291],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$\\mathrm{R}_{\\mathrm{B}1}=\\mathrm{R}_{\\mathrm{B}2}=20\\mathrm{k}\\Omega$</tex>":[294],"would":[295,389],"entail":[296],"6V":[298],"drop,":[299],"prohibitively":[302],"large":[303,348],"fine-line":[305],"processes.":[307],"In":[308],"[5],":[309],"resistor":[312],"was":[313],"replaced":[314],"regulator":[317,333],"alleviate":[319],"headroom":[322],"issue.":[323],"But":[324],"approach":[326],"severely":[328,438],"conflicting":[332],"output":[334],"impedance":[335],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$(\\mathrm{R}_{\\text{OUT}})$</tex>":[338],"requirements:":[339],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$\\mathrm{F}_{\\mathrm{c}}$</tex>":[345,424],"requires":[346],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$\\mathrm{R}_{\\text{OUT}}$</tex>":[351,367,372],";":[352],"good":[354],"line/load":[355],"regulation":[356],"supply":[359],"rejection":[360],"(PSR)":[361],"mandates":[362],"Even":[368],"if":[369],"made":[374],"high":[376,467],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$20\\mathrm{k}\\Omega$</tex>":[380],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$\\mathrm{C}_{\\mathrm{C}1}=\\mathrm{C}_{\\mathrm{C}2}=20\\text{pF}$</tex>":[384],",":[385],"nearly":[391],"400kHz,":[392],"about":[395],"an":[396,498],"order":[397],"magnitude":[399],"higher":[400],"than":[401],"needed":[404],"for":[405,420],"baseline":[407],"wander.":[408],"Consequently,":[409],"further":[410],"increasing":[411,482],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$\\mathrm{C}_{\\mathrm{C}1}/\\mathrm{C}_{\\mathrm{C}2}$</tex>":[414],"viable":[418],"option":[419],"lowering":[421,462],"top/bottom":[427],"plate":[428],"parasitic":[429],"capacitors":[430,437],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$\\mathrm{C}_{\\text{PT}}/\\mathrm{C}_{\\text{PB}}$</tex>":[433],"coupling":[436],"degrade":[439],"two":[444],"ways.":[446],"First,":[447],"they":[448,470],"shunt":[449],"photocurrent,":[451],"significantly":[452],"reducing":[453,477],"into":[458],"effective":[464],"frequencies.":[468],"Second,":[469],"add":[471],"input":[475],"capacitance,":[476],"[6].":[485],"Because":[486],"these":[488],"drawbacks,":[489],"practical":[490],"not":[495],"superior":[496],"SE-TIA.":[499]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":9},{"year":2024,"cited_by_count":6},{"year":2023,"cited_by_count":1}],"updated_date":"2026-04-16T08:26:57.006410","created_date":"2025-10-10T00:00:00"}