{"id":225410,"date":"2012-10-18T22:00:00","date_gmt":"2012-10-18T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/convertisseur-a-n-double-voie-14-bits-et-250-mech-s\/"},"modified":"2012-10-18T22:00:00","modified_gmt":"2012-10-18T22:00:00","slug":"convertisseur-a-n-double-voie-14-bits-et-250-mech-s","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/convertisseur-a-n-double-voie-14-bits-et-250-mech-s\/","title":{"rendered":"Convertisseur A\/N double voie 14 bits et 250 M\u00e9ch\/s"},"content":{"rendered":"<p>Les infrastructures de communications, les &eacute;quipements d&rsquo;imagerie, les syst&egrave;mes d&rsquo;instrumentation industrielle, les produits d&rsquo;&eacute;lectronique de d&eacute;fense et autres syst&egrave;mes exigent que les &eacute;tages de conversion de donn&eacute;es aient des r&eacute;solutions de plus en plus importantes et des fr&eacute;quences d&rsquo;&eacute;chantillonnage toujours plus &eacute;lev&eacute;es. Les contraintes de mise en &oelig;uvre de l&rsquo;interface parall&egrave;le et les limitations des liaisons LVDS en termes de d&eacute;bit binaire commencent &agrave; repr&eacute;senter des handicaps techniques pour les concepteurs. Face &agrave; ces nouvelles exigences, Analog Devices annonce sous la r&eacute;f&eacute;rence AD9250, le premier convertisseur A\/N &agrave; latence d&eacute;terministe JESD204B de sous-classe 1 capable de traiter 250 M&eacute;ch\/s. Cette fonctionnalit&eacute; autorise la synchronisation pr&eacute;cise de plusieurs voies de conversion de donn&eacute;es par le biais d&rsquo;une interface s&eacute;rie.<br \/>\nLa mise en &oelig;uvre d&rsquo;une interface s&eacute;rie dans le convertisseur A\/N AD9250 permet d&rsquo;atteindre un d&eacute;bit de 5&nbsp;Gbits\/s sur une liaison &agrave; 1 ou 2 voies. Deux voies s&eacute;rie sont utilis&eacute;es pour supporter le d&eacute;bit total du convertisseur A\/N double &agrave; 250&nbsp;M&eacute;ch\/s, une seule voie permettant de prendre en charge les fr&eacute;quences d&rsquo;&eacute;chantillonnage r&eacute;duites.<br \/>\nLes fournisseurs de circuits logiques programmables (FPGA) ont incorpor&eacute; des ports s&eacute;rialiseur\/d&eacute;s&eacute;rialiseur (SerDes) JESD204B dans leurs produits de nouvelle g&eacute;n&eacute;ration. Cette connectivit&eacute; transparente d&rsquo;un bout &agrave; l&rsquo;autre de la cha&icirc;ne du signal analogique simplifie la topologie des circuits imprim&eacute;s, acc&eacute;l&egrave;re la r&eacute;alisation de prototypes et r&eacute;duit les d&eacute;lais de mise sur le march&eacute;. &quot;&nbsp;Ce produit phare annonce une nouvelle approche &eacute;troitement int&eacute;gr&eacute;e de la conception de la cha&icirc;ne analogique dans les syst&egrave;mes &agrave; base de circuits logiques programmables sur site&nbsp;&quot;, a d&eacute;clar&eacute; Kevin Kattmann, directeur de la ligne de produits Convertisseurs A\/N &agrave; haut d&eacute;bit d&rsquo;Analog Devices. &quot;&nbsp;Le convertisseur analogique\/num&eacute;rique deux voies 14&nbsp;bits AD9250 affiche des performances en traitement de signal large bande hors pair, tandis que son interface simplifi&eacute;e &eacute;limine les obstacles &agrave; la conception pour les applications &agrave; base de FPGA de nouvelle g&eacute;n&eacute;ration dans les domaines des radios d&eacute;finies par logiciel et des ultrasons &agrave; usage m&eacute;dical. De nombreux concepteurs de syst&egrave;mes peuvent ainsi relever le d&eacute;fi pos&eacute; par les entr&eacute;es\/sorties lors de la mise en &oelig;uvre de la cha&icirc;ne du signal analogique de haute performance.&nbsp;&quot;<br \/>\nL&rsquo;interface s&eacute;rie JESD204B du convertisseur AD9250 r&eacute;duit de 28 &agrave; seulement 2 par circuit int&eacute;gr&eacute; le nombre de chemins de donn&eacute;es de sortie diff&eacute;rentielles &agrave; haut d&eacute;bit qui sont n&eacute;cessaires. Sa fonction de latence d&eacute;terministe de sous-classe 1 est r&eacute;p&eacute;table d&rsquo;un cycle de mise sous tension &agrave; l&rsquo;autre, et au fil de la resynchronisation des liaisons. Cette fonction est importante dans les domaines suivants&nbsp;: syst&egrave;mes radio &agrave; diversit&eacute; et instrumentation, r&eacute;cepteurs num&eacute;riques multimodes tels que TD-SCDMA, WCDMA, LTE (notamment l&rsquo;&eacute;volution 2R2T &gt;8R8T), &eacute;lectronique radar et de d&eacute;fense, syst&egrave;mes d&rsquo;imagerie m&eacute;dicale, infrastructures c&acirc;bl&eacute;es et radios logicielles d&rsquo;usage g&eacute;n&eacute;ral. <\/p>\n<p><a href=\"http:\/\/www.analog.com\" target=\"_blank\" title=\"www.analog.com\" rel=\"noopener\">www.analog.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Analog Devices annonce sous la r\u00e9f\u00e9rence AD9250 un nouveau convertisseur analogique\/num\u00e9rique double voies 14 bits \u00e0 250 M\u00e9ch\/s, dot\u00e9 d&rsquo;une interface de sortie de donn\u00e9es s\u00e9rie conforme au standard JEDEC JESD204B.<\/p>\n","protected":false},"author":22,"featured_media":225411,"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-225410","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Convertisseur A\/N double voie 14 bits et 250 M\u00e9ch\/s ...<\/title>\n<meta name=\"description\" content=\"Analog Devices annonce sous la r\u00e9f\u00e9rence AD9250 un nouveau convertisseur analogique\/num\u00e9rique double voies 14 bits \u00e0 250 M\u00e9ch\/s, dot\u00e9 d&#039;une interface...\" \/>\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\/225410\/\" 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