{"id":225488,"date":"2012-10-28T23:00:00","date_gmt":"2012-10-28T23:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/convertisseurs-an-16-bits-haut-debit-et-faible-bruit\/"},"modified":"2012-10-28T23:00:00","modified_gmt":"2012-10-28T23:00:00","slug":"convertisseurs-an-16-bits-haut-debit-et-faible-bruit","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/convertisseurs-an-16-bits-haut-debit-et-faible-bruit\/","title":{"rendered":"Convertisseurs AN 16 bits haut d\u00e9bit et faible bruit"},"content":{"rendered":"<p class=\"MsoNormal\" style=\"line-height:normal\">Avec un niveau de bruit d&rsquo;entr&eacute;e de seulement 46 &micro;Veff. et une erreur INL maximum garantie de &plusmn;2,3 LSB, ces convertisseurs conviennent pour les applications &agrave; &eacute;chantillonnage de grande lin&eacute;arit&eacute;, &agrave; tr&egrave;s faible niveau de bruit, comme la radiographie-X num&eacute;rique, l&rsquo;imagerie m&eacute;dicale et infrarouge, les pachym&egrave;tres pour la mesure de l&rsquo;&eacute;paisseur de la corn&eacute;e, la spectrom&eacute;trie et la cytom&eacute;trie. Ces composants atteignent un rapport signal sur bruit SNR de 84 dB,&nbsp; une gamme dynamique exempte de parasites SFDR de 99 dB en bande de base. Les performances &eacute;lev&eacute;es en alternatif et le bas niveau de bruit sont atteints gr&acirc;ce &agrave; une tension d&rsquo;entr&eacute;e de 2,1 V cr&ecirc;te &agrave; cr&ecirc;te qui r&eacute;duit fortement la consommation requise par les circuits de contr&ocirc;le du CAN. Les convertisseurs, eux-m&ecirc;me, consomment approximativement 80 mW\/canal. En plus, des &eacute;conomies d&rsquo;&eacute;nergie peuvent &ecirc;tre r&eacute;alis&eacute;es en les mettant en mode veille, avec une consommation de 12 mW, ou en mode arr&ecirc;t, avec seulement 0,5 mW, ce qui les rend bien adapt&eacute;s pour les applications de mesures et de tests portables.<br \/>\nLe LTC2269 et le LTC2270 sont des CAN parall&egrave;le, &agrave; &eacute;chantillonnage simultan&eacute;, respectivement &agrave; un canal et deux canaux. Ils offrent le choix entre des sorties num&eacute;riques &agrave; d&eacute;bit de donn&eacute;es CMOS, ou double d&eacute;bit (DDR) CMOS\/LVDS avec s&eacute;quence programmable de la sortie num&eacute;rique, intensit&eacute; de sortie LVDS programmable et terminaison de sortie LVDS optionnelle. Le LTC2271 comprend deux CAN deux canaux, &agrave; &eacute;chantillonnage simultan&eacute; et &agrave; sorties s&eacute;rie LVDS. Ils int&egrave;grent un g&eacute;n&eacute;rateur propri&eacute;taire de sortie num&eacute;rique de donn&eacute;es al&eacute;atoires et un mode de polarit&eacute; altern&eacute;e de bit ABP qui minimisent le signal num&eacute;rique de retour dans l&rsquo;application.<br \/>\nGr&acirc;ce aux bo&icirc;tiers compacts QFN, les concepteurs peuvent b&eacute;n&eacute;ficier de la vari&eacute;t&eacute; de choix entre les interfaces pour r&eacute;duire le nombre de broches et faciliter le routage vers les FPGA. <\/p>\n<p class=\"MsoNormal\" style=\"line-height:normal\"><a title=\"http:\/\/www.linear.com\/product\/LTC2269\" target=\"_blank\" href=\"http:\/\/www.linear.com\/product\/LTC2269\" rel=\"noopener\">www.linear.com\/product\/LTC2269<\/a><\/p>\n<p class=\"MsoNormal\" style=\"line-height:normal\"><a title=\"http:\/\/www.linear.com\/product\/LTC2270\" target=\"_blank\" href=\"http:\/\/www.linear.com\/product\/LTC2270\" rel=\"noopener\">www.linear.com\/product\/LTC2270<\/a><\/p>\n<p class=\"MsoNormal\" style=\"line-height:normal\"><a title=\"http:\/\/www.linear.com\/product\/LTC2271\" target=\"_blank\" href=\"http:\/\/www.linear.com\/product\/LTC2271\" rel=\"noopener\">www.linear.com\/product\/LTC2271<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>D\u00e9di\u00e9s principalement \u00e0 des applications m\u00e9dicales, les trois convertisseurs analogiques-num\u00e9riques (CAN), 20 M\u00e9ch\/s, 16 bits, basse consommation, LTC2269, LTC2270 et LTC2271 de Linear Technology pr\u00e9sentent un niveau de bruit tr\u00e8s bas \u00e0 l\u2019entr\u00e9e et une erreur de non-lin\u00e9arit\u00e9 int\u00e9grale (INL) minimale pour des mesures en continu de tr\u00e8s grande pr\u00e9cision.<\/p>\n","protected":false},"author":22,"featured_media":225489,"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-225488","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Convertisseurs AN 16 bits haut d\u00e9bit et faible bruit ...<\/title>\n<meta name=\"description\" content=\"D\u00e9di\u00e9s principalement \u00e0 des applications m\u00e9dicales, les trois convertisseurs analogiques-num\u00e9riques (CAN), 20 M\u00e9ch\/s, 16 bits, basse consommation,...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/225488\/\" 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