{"id":201024,"date":"2016-08-19T05:00:00","date_gmt":"2016-08-19T05:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/convertisseur-n-a-rf-compact-a-linearite-exceptionnelle\/"},"modified":"2016-08-19T05:00:00","modified_gmt":"2016-08-19T05:00:00","slug":"convertisseur-n-a-rf-compact-a-linearite-exceptionnelle","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/convertisseur-n-a-rf-compact-a-linearite-exceptionnelle\/","title":{"rendered":"Convertisseur N\/A RF compact \u00e0 lin\u00e9arit\u00e9 exceptionnelle"},"content":{"rendered":"<p>Gr\u00e2ce \u00e0&nbsp; sa large couverture de fr\u00e9quences, du continu jusqu\u2019\u00e0&nbsp;plus de 6 GHz, ce convertisseur N\/A marque une avanc\u00e9e majeure vis-\u00e0-vis des fonctions int\u00e9gr\u00e9es et des performances, tant en lin\u00e9arit\u00e9 qu\u2019en dynamique. Il constitue \u00e9galement un apport pr\u00e9cieux en instrumentation de pr\u00e9cision, comme les syst\u00e8mes de test pour les applications de communication radio.<\/p>\n<p>Ce convertisseur se distingue \u00e9galement par une puret\u00e9 spectrale 100 \u00e0&nbsp;1000 fois sup\u00e9rieure \u00e0&nbsp;celle des g\u00e9n\u00e9rations pr\u00e9c\u00e9dentes avec une am\u00e9lioration de 20-30 dB, et une agilit\u00e9 sup\u00e9rieure avec une vitesse de changement de fr\u00e9quence 100 fois plus rapide qu\u2019avec les syst\u00e8mes traditionnels avec boucle \u00e0&nbsp;verrouillage de phase (PLL).<br \/>\nLa r\u00e9duction du nombre de composants et de l\u2019encombrement permet de mettre en \u0153uvre des solutions radars avanc\u00e9es avec des techniques num\u00e9riques de formation de faisceaux au niveau des \u00e9l\u00e9ments.<\/p>\n<p>D\u00e9riv\u00e9 de l\u2019AD9162 affichant les m\u00eames performances dynamiques, ce circuit combine un convertisseur N\/A 16 bits \u00e0&nbsp;haute puret\u00e9 spectrale et un synth\u00e9tiseur num\u00e9rique direct (DDS) capables de sauts de fr\u00e9quence rapides, jusqu\u2019\u00e0 300 ns, avec coh\u00e9rence de phase, parmi 32 fr\u00e9quences diff\u00e9rentes gr\u00e2ce \u00e0&nbsp;l\u2019int\u00e9gration sur la puce de 32 oscillateurs \u00e0&nbsp;commande num\u00e9rique ind\u00e9pendants (NCOs). Ces caract\u00e9ristiques en font un dispositif bien adapt\u00e9 \u00e0&nbsp;une multitude d\u2019applications car il est capable, selon les modes d\u2019\u00e9chantillonnage choisis (Bande de base, RZ, Mixed-Mode) et filtres s\u00e9lectionn\u00e9s, de couvrir les secteurs 1, 2 et 3 de Nyquist et ainsi jusqu\u2019\u00e0&nbsp;des fr\u00e9quences de porteuses de 7.5 GHz, tout en garantissant une dynamique d\u2019exception.<\/p>\n<hr \/>\n<p>Ce composant est \u00e9quip\u00e9 de plusieurs filtres interpolateurs r\u00e9els ou complexes (FIR85) qui permettent d\u2019adapter la cadence des donn\u00e9es d\u2019entr\u00e9e selon la bande instantan\u00e9e exig\u00e9e au rythme de sa conversion qui peut atteindre 12 Giga-\u00e9chantillons\/s. L\u2019interface d\u2019entr\u00e9e num\u00e9rique est constitu\u00e9e de 8 liens SERDES JESD204B programmables en termes de vitesse et de nombre de liaisons pour s\u2019accommoder des contraintes requises par diverses applications.<\/p>\n<p>Le circuit est propos\u00e9 en bo\u00eetier CSP-BGA de 8 x 8 mm sans plomb, ainsi qu\u2019en bo\u00eetiers CSP-BGA de 11 x 11 mm sans plomb et SnPb. Il s\u2019accompagne d\u2019un outil d\u2019\u00e9valuation \u00e0&nbsp;distance de conception unique qui assure le test de ses performances.<\/p>\n<p><a href=\"http:\/\/www.analog.com\/AD9164\" target=\"_blank\" rel=\"noopener\">www.analog.com\/AD9164<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dot\u00e9 de performances de lin\u00e9arit\u00e9 exceptionnelles, le convertisseur num\u00e9rique-analogique AD9164 d\u2019Analog Devices permet aux concepteurs de syst\u00e8mes de transmission radiofr\u00e9quences ou de g\u00e9n\u00e9ration de signaux hyperfr\u00e9quences, une am\u00e9lioration tr\u00e8s sensible des performances. <\/p>\n","protected":false},"author":9,"featured_media":201025,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[896,916],"domains":[47],"ppma_author":[1141],"class_list":["post-201024","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","tag-digitalsignalprocessing-fr","tag-rf-transmission-fr","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Convertisseur N\/A RF compact \u00e0 lin\u00e9arit\u00e9 exceptionnelle ...<\/title>\n<meta name=\"description\" content=\"Dot\u00e9 de performances de lin\u00e9arit\u00e9 exceptionnelles, le convertisseur num\u00e9rique-analogique AD9164 d\u2019Analog Devices permet aux concepteurs de syst\u00e8mes de...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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