{"id":230068,"date":"2014-05-22T22:00:00","date_gmt":"2014-05-22T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/isolateur-%c2%b5module-usb-avec-alimentation-usb\/"},"modified":"2014-05-22T22:00:00","modified_gmt":"2014-05-22T22:00:00","slug":"isolateur-%c2%b5module-usb-avec-alimentation-usb","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/isolateur-%c2%b5module-usb-avec-alimentation-usb\/","title":{"rendered":"Isolateur \u00b5Module USB, avec alimentation USB"},"content":{"rendered":"<p>Ce circuit s&eacute;pare les masses en isolant une paire d&rsquo;&eacute;metteurs-r&eacute;cepteurs de signaux USB par une isolation galvanique qui procure un isolement de 2500 Veff. et une r&eacute;jection pour des diff&eacute;rences de potentiel en mode commun sup&eacute;rieur &agrave; 30 kV\/&micro;s. Il comprend un convertisseur DC\/DC &agrave; faibles interf&eacute;rences &eacute;lectromagn&eacute;tiques (IEM), aliment&eacute; en externe ou sur BUS, qui fournit l&rsquo;alimentation &agrave; l&rsquo;&eacute;metteur-r&eacute;cepteur isol&eacute; et g&eacute;n&egrave;re jusqu&rsquo;&agrave; 2,5 W de puissance isol&eacute;e pour les p&eacute;riph&eacute;riques USB et les contr&ocirc;leurs HUB\/h&ocirc;te. Sa caract&eacute;ristique unique de d&eacute;tection automatique de la vitesse du BUS facilite son utilisation dans les applications d&rsquo;isolement de HUB\/h&ocirc;te\/BUS. Des r&eacute;sistances int&eacute;gr&eacute;es, abaisseuses en aval et &eacute;l&eacute;vatrices en amont, sont automatiquement configur&eacute;es pour s&rsquo;adapter &agrave; la vitesse du composant en aval, ce qui permet de g&eacute;rer et de notifier les vitesses du BUS &agrave; l&rsquo;h&ocirc;te.<br \/>\nAvec un isolement galvanique de 2500 Veff., des &eacute;metteurs-r&eacute;cepteurs int&eacute;gr&eacute;s aliment&eacute;s USB et compatibles USB 2.0, cet isolateur ne requiert pas de composants externes et offre une solution &micro;Module compl&egrave;te pour les t&eacute;l&eacute;communications &agrave; USB isol&eacute;es. Il est bien appropri&eacute; pour une large gamme d&rsquo;applications, comprenant l&rsquo;isolement de l&rsquo;h&ocirc;te, du HUB et du composant p&eacute;riph&eacute;rique, ainsi que celui du bus USB.\n<\/p>\n<hr \/>\n<p>Les &eacute;metteurs-r&eacute;cepteurs, prot&eacute;g&eacute;s contre les d&eacute;charges &eacute;lectrostatiques (ESD) de &plusmn;15 kV, fonctionnent &agrave; la pleine vitesse de l&rsquo;USB 2.0 de 12 Mbits\/s et en petite vitesse de 1,5 Mbits\/s. Un mode interruption g&egrave;re la p&eacute;riode d&rsquo;arr&ecirc;t et r&eacute;duit le courant de l&rsquo;alimentation du Vbus &agrave; moins de 2 mA. Le convertisseur DC\/DC int&eacute;gr&eacute; peut fournir 2,5 W quand il est connect&eacute; &agrave; une alimentation externe de forte tension ou 1 W quand il est connect&eacute; &agrave; l&rsquo;alimentation Vbus du port USB.<br \/>\nCet isolateur est propos&eacute; en bo&icirc;tier compact BGA de 15 x 15 x 5 mm. Tous les circuits int&eacute;gr&eacute;s et les composants passifs sont encapsul&eacute;s dans ce bo&icirc;tier &micro;Module conforme aux normes RoHS. Ce produit se d&eacute;cline en versions commerciales, industrielles et de l&rsquo;automobile, fonctionnant respectivement dans les gammes de temp&eacute;ratures de 0 &agrave; 70 &deg;C, -40 &deg;C &agrave; 85 &deg;C et -40 &deg;C &agrave; 105 &deg;C. Il rejoint la famille d&rsquo;isolateurs &micro;Module qui comprend les bus RS485, RS232, SPI, I2C et GPIO. <\/p>\n<\/p>\n<p><a title=\"www.linear.com\/LTM2884\" target=\"_blank\" href=\"http:\/\/www.linear.com\/LTM2884\" rel=\"noopener\">www.linear.com\/LTM2884<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Combinant communications de donn\u00e9es par port USB et alimentation USB, l\u2019isolateur \u00b5Module USB LMT2884 de Linear technology prot\u00e8ge contre les diff\u00e9rentiels de tensions entre masses et les transitoires en mode commun de forte amplitude. Robuste, il convient pour les syst\u00e8mes USB dans les environnements s\u00e9v\u00e8res de l\u2019industrie et du m\u00e9dical o\u00f9 une telle protection est n\u00e9cessaire.<\/p>\n","protected":false},"author":22,"featured_media":230069,"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-230068","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Isolateur \u00b5Module USB, avec alimentation USB ...<\/title>\n<meta name=\"description\" content=\"Combinant communications de donn\u00e9es par port USB et alimentation USB, l\u2019isolateur \u00b5Module USB LMT2884 de Linear technology prot\u00e8ge contre les...\" \/>\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\/230068\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Isolateur \u00b5Module USB, avec alimentation USB\" \/>\n<meta property=\"og:description\" content=\"Combinant communications de donn\u00e9es par port USB et alimentation USB, l\u2019isolateur \u00b5Module USB LMT2884 de Linear technology prot\u00e8ge contre les diff\u00e9rentiels de tensions entre masses et les transitoires en mode commun de forte amplitude. Robuste, il convient pour les syst\u00e8mes USB dans les environnements s\u00e9v\u00e8res de l\u2019industrie et du m\u00e9dical o\u00f9 une telle protection est n\u00e9cessaire.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/230068\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2014-05-22T22:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/test.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/import\/eci6869_linear_ltm2884.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2043\" \/>\n\t<meta property=\"og:image:height\" content=\"1459\" \/>\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\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"eeNews 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