{"id":224569,"date":"2012-06-19T22:00:00","date_gmt":"2012-06-19T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/convertisseur-n-a-16-bits-avec-entree-serie-jesd204\/"},"modified":"2012-06-19T22:00:00","modified_gmt":"2012-06-19T22:00:00","slug":"convertisseur-n-a-16-bits-avec-entree-serie-jesd204","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/convertisseur-n-a-16-bits-avec-entree-serie-jesd204\/","title":{"rendered":"Convertisseur N\/A 16 bits avec entr\u00e9e s\u00e9rie JESD204"},"content":{"rendered":"<p class=\"MsoNormal\" style=\"margin-bottom:0cm;margin-bottom:.0001pt\">Les FPGA sont de plus en plus utilis&eacute;s en tant que processeurs dans un grand nombre d&rsquo;applications de transmission de donn&eacute;es sans fil et filaires, les radars, l&rsquo;avionique et l&rsquo;imagerie m&eacute;dicale. Ils pr&eacute;sentent de nombreux avantages tels que d&eacute;veloppement de syst&egrave;mes simplifi&eacute;, d&eacute;lais de mise sur le march&eacute; raccourcis, vitesse de traitement accrue et possibilit&eacute; de programmation &agrave; la vol&eacute;e. Cependant, dans le cas des applications de conversion de donn&eacute;es haute r&eacute;solution dont le d&eacute;bit est sup&eacute;rieur &agrave; 1&nbsp;G&eacute;ch\/seconde, les &eacute;changes de donn&eacute;es bidirectionnels effectu&eacute;s avec les FPGA posent un probl&egrave;me de conception, en raison du d&eacute;bit limit&eacute; de l&rsquo;interface, de la complexit&eacute; des interconnexions et des exigences d&rsquo;encombrement sur les cartes d&rsquo;interface parall&egrave;le. L&rsquo;entr&eacute;e s&eacute;rie JESD204 a &eacute;t&eacute; sp&eacute;cialement con&ccedil;ue pour rem&eacute;dier &agrave; ces contraintes en d&eacute;finissant une interface s&eacute;rie robuste &agrave; haut d&eacute;bit, &agrave; la fois &eacute;volutive et capable de prendre en charge des d&eacute;bits pouvant atteindre plusieurs Gbits\/s. <\/p>\n<p class=\"MsoNormal\" style=\"margin-bottom:0cm;margin-bottom:.0001pt\">Conforme au standard JESD204A, ce convertisseur affiche une fr&eacute;quence d&rsquo;&eacute;chantillonnage &eacute;lev&eacute;e et une large plage dynamique, ce qui permet de g&eacute;n&eacute;rer plusieurs porteuses jusqu&rsquo;&agrave; la fr&eacute;quence de Nyquist. Il inclut des fonctions telles qu&rsquo;un oscillateur &agrave; commande num&eacute;rique (NCO) 32&nbsp;bits int&eacute;gr&eacute; qui assure le placement flexible de la fr&eacute;quence interm&eacute;diaire, une modulation num&eacute;rique complexe et une compensation de gain et de d&eacute;calage. Gr&acirc;ce &agrave; un port s&eacute;rie quadrifilaire, une interface est utilis&eacute;e pour la programmation et la lecture des fonctions et param&egrave;tres internes au syst&egrave;me. <\/p>\n<p class=\"MsoNormal\" style=\"margin-bottom:0cm;margin-bottom:.0001pt\">Pr&eacute;sent&eacute; en bo&icirc;tier LFCSP 56 contacts, ce circuit est compatible avec les standards de communications sans fil GSM, WCDMA, TD-SCDMA, CDMA2000, WiMAX et LTE. Ses sorties analogiques sont optimis&eacute;es pour s&rsquo;interfacer en toute transparence avec des modulateurs en quadrature analogiques tels que la s&eacute;rie propri&eacute;taire F-MOD ADL537x et le tampon horloge\/donn&eacute;es ADCLK914 qui le commande avec une gigue en entr&eacute;e d&rsquo;horloge de 110&nbsp;fs. Parmi les autres composants compl&eacute;mentaires figurent le modulateur en quadrature ADRF6702 et le m&eacute;langeur RF ADRF6602. Le convertisseur est &eacute;galement propos&eacute; sur une carte d&rsquo;&eacute;valuation mezzanine au standard FMC pour connectivit&eacute; directe avec les plates-formes de d&eacute;veloppement FPGA de Xilinx.<\/p>\n<p class=\"MsoNormal\" style=\"margin-bottom:0cm;margin-bottom:.0001pt\"><a href=\"http:\/\/www.analog.com\/AD9128\" target=\"_blank\" title=\"www.analog.com\" rel=\"noopener\">&nbsp;<\/a><\/p>\n<p><a href=\"void(0);\/*1340179679389*\/\">www.analog.com\/AD9128<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le convertisseur num\u00e9rique\/analogique AD9128 16 bits \u00e0 1,25 G\u00e9ch\/s d\u2019Analog Devices est dot\u00e9 d\u2019une fonction de modulation num\u00e9rique complexe int\u00e9gr\u00e9e et d\u2019une entr\u00e9e s\u00e9rie compatible JESD204A. Cette interface s\u00e9rie \u00e0 haut d\u00e9bit simplifie et am\u00e9liore consid\u00e9rablement le transfert des donn\u00e9es entre le convertisseur N\/A et les circuits logiques programmables sur site (FPGA) dans les environnements de syst\u00e8me classiques.<\/p>\n","protected":false},"author":22,"featured_media":224570,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-224569","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Convertisseur N\/A 16 bits avec entr\u00e9e s\u00e9rie JESD204 ...<\/title>\n<meta name=\"description\" content=\"Le convertisseur num\u00e9rique\/analogique AD9128 16 bits \u00e0 1,25 G\u00e9ch\/s d\u2019Analog Devices est dot\u00e9 d\u2019une fonction de modulation num\u00e9rique complexe...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/test.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/224569\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Convertisseur N\/A 16 bits avec entr\u00e9e s\u00e9rie JESD204\" \/>\n<meta property=\"og:description\" content=\"Le convertisseur num\u00e9rique\/analogique AD9128 16 bits \u00e0 1,25 G\u00e9ch\/s d\u2019Analog Devices est dot\u00e9 d\u2019une fonction de modulation num\u00e9rique complexe int\u00e9gr\u00e9e et d\u2019une entr\u00e9e s\u00e9rie compatible JESD204A. 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