{"id":224621,"date":"2012-06-25T22:00:00","date_gmt":"2012-06-25T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/synthetiseurs-numeriques-directs-12-bits-ultra-rapides\/"},"modified":"2012-06-25T22:00:00","modified_gmt":"2012-06-25T22:00:00","slug":"synthetiseurs-numeriques-directs-12-bits-ultra-rapides","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/synthetiseurs-numeriques-directs-12-bits-ultra-rapides\/","title":{"rendered":"Synth\u00e9tiseurs num\u00e9riques directs 12 bits ultra-rapides"},"content":{"rendered":"

Le cœur de ces deux circuits prend en charge une technologie numérique programmable avancée capable de synthétiser des formes d’ondes sinusoïdales à sortie analogique et agiles en fréquence jusqu’à 1,4 GHz. Ces formes d’ondes sont utilisées dans de nombreuses applications de communications telles que les stations de base sans fil, les radars civils et militaires, et autres systèmes de communications sécurisés. Ils sont dotés d’un port parallèle 32 bits qui permet de modifier très rapidement la fréquence, la phase et l’amplitude du signal de sortie, ainsi que d’un "modulo programmable" qui élargit de manière significative l’utilisation de circuits DDS à des applications qui exigent des relations rationnelles exactes, telles que les générateurs de signaux et autres équipements de laboratoire. <\/p>\n

"En portant à 3,5 Géch\/s la fréquence d’échantillonnage des circuits intégrés DDS haute résolution, nous donnons à nos clients la possibilité de générer des fréquences de sortie plus élevées avec des performances dynamiques améliorées", a déclaré Peter Real, vice-président d’Analog Devices en charge des produits linéaires et RF." Les nouveaux synthétiseurs DDS d’Analog Devices représentent une percée majeure en offrant une plage dynamique exempte d’impuretés spectrales dans une gamme de fréquence nettement plus large qu’avec les générations précédentes. Grâce à leur plage dynamique élevée (SFDR), et la possibilité de faire des sauts de fréquence rapides et finement ajustables, les circuits intégrés DDS AD9914 et AD9915 permettent aux concepteurs de changer de fréquence au cours d’une période d’horloge avec un réglage ultra-précis de cette fréquence."\n<\/p>\n

Ces synthétiseurs DDS s’établissent en quelques nanosecondes avec une granularité nettement inférieure à 200 pHz et leur consommation n’excède pas 2.5 W à pleine vitesse. Présentés en boîtiers LFCSP 88 contacts, ces circuits conviennent à la génération de signaux RF dans les applications associant les modulateurs propriétaires de la gamme, les circuits d’horloge ultra-rapides telles que l’AD9523-1, les PLL et les amplificateurs RF.<\/p>\n

 <\/p>\n

www.analog.com\/ad9914<\/a><\/p>\n

 <\/p>\n

www.analog.com\/ad9915<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

R\u00e9pondant \u00e0 la demande de solutions \u00e0 synth\u00e8se num\u00e9rique directe (DDS), une technologie adapt\u00e9e aux exigences des applications sans fil qui requi\u00e8rent des sauts et\/ou un balayage de fr\u00e9quence rapides, Analog Devices a plus que tripl\u00e9 la fr\u00e9quence d\u2019horloge des circuits int\u00e9gr\u00e9s DDS jusqu\u2019alors disponibles. Associ\u00e9 \u00e0 un convertisseur num\u00e9rique\/analogique 12 bits ultra-rapide int\u00e9gr\u00e9, les circuits DDS AD9914 et AD9915 atteignent respectivement les fr\u00e9quences d\u2019\u00e9chantillonnage de 3,5 G\u00e9ch\/s et de 2,5 G\u00e9ch\/s.<\/p>\n","protected":false},"author":22,"featured_media":224622,"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-224621","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"Synth\u00e9tiseurs num\u00e9riques directs 12 bits ultra-rapides ...<\/title>\n<meta name=\"description\" content=\"R\u00e9pondant \u00e0 la demande de solutions \u00e0 synth\u00e8se num\u00e9rique directe (DDS), une technologie adapt\u00e9e aux exigences des applications sans fil qui requi\u00e8rent...\" \/>\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\/224621\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Synth\u00e9tiseurs num\u00e9riques directs 12 bits ultra-rapides\" \/>\n<meta property=\"og:description\" content=\"R\u00e9pondant \u00e0 la demande de solutions \u00e0 synth\u00e8se num\u00e9rique directe (DDS), une technologie adapt\u00e9e aux exigences des applications sans fil qui requi\u00e8rent des sauts et\/ou un balayage de fr\u00e9quence rapides, Analog Devices a plus que tripl\u00e9 la fr\u00e9quence d\u2019horloge des circuits int\u00e9gr\u00e9s DDS jusqu\u2019alors disponibles. Associ\u00e9 \u00e0 un convertisseur num\u00e9rique\/analogique 12 bits ultra-rapide int\u00e9gr\u00e9, les circuits DDS AD9914 et AD9915 atteignent respectivement les fr\u00e9quences d\u2019\u00e9chantillonnage de 3,5 G\u00e9ch\/s et de 2,5 G\u00e9ch\/s.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/test.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/224621\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2012-06-25T22:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/test.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/import\/eci6154_adi-ad9914-lo.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1860\" \/>\n\t<meta property=\"og:image:height\" content=\"1860\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"eeNews Europe\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" 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