{"id":230900,"date":"2014-09-11T22:00:00","date_gmt":"2014-09-11T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/regulateur-lnb-double-pour-systemes-de-reception-par-satellite\/"},"modified":"2014-09-11T22:00:00","modified_gmt":"2014-09-11T22:00:00","slug":"regulateur-lnb-double-pour-systemes-de-reception-par-satellite","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/regulateur-lnb-double-pour-systemes-de-reception-par-satellite\/","title":{"rendered":"R\u00e9gulateur LNB double pour syst\u00e8mes de r\u00e9ception par satellite"},"content":{"rendered":"<p>Ce composant consiste en un r&eacute;gulateur &agrave; d&eacute;coupage et un r&eacute;gulateur lin&eacute;aire monolithique, sp&eacute;cialement con&ccedil;u pour fournir la puissance et les signaux d&rsquo;interface au convertisseur LNB via un c&acirc;ble coaxial dans les syst&egrave;mes de r&eacute;ception TV par satellite. Il int&egrave;gre les circuits d&rsquo;&eacute;l&eacute;vation de tension et de compensation et par cons&eacute;quent ne requi&egrave;re que tr&egrave;s peu de composants externes.<br \/>\nLe circuit &agrave; d&eacute;coupage boost, de 563 kHz ou 939 kHz, et la limitation de courant r&eacute;glable par l&rsquo;utilisateur entre 250 &agrave; 950 mA permettent l&rsquo;utilisation de composants externes &agrave; faible encombrement. Une broche Sleep est disponible pour optimiser les &eacute;conomies d&rsquo;&eacute;nergie et mettre en veille rapidement le composant si n&eacute;cessaire, sans avoir &agrave; utiliser une commande I&sup2;C.<br \/>\nCe r&eacute;gulateur peut soit fournir un signal de 22 kHz g&eacute;n&eacute;r&eacute; en interne, soit accepter un signal externe de m&ecirc;me fr&eacute;quence pour les communications DiSEqC. Une d&eacute;tection du signal 22 kHz est &eacute;galement incluse. Si besoin, une commande de &quot;gate&quot; pour transistor simplifie la mise en &oelig;uvre d&rsquo;une communication DiSEqC bidirectionnelle. Une information de panne imminente de la puissance permet d&rsquo;initier les proc&eacute;dures de mise hors circuit.<br \/>\nLe courant inverse maximum de la sortie peut &ecirc;tre ajust&eacute; en utilisant un bit de contr&ocirc;le. Une large gamme de registre d&rsquo;erreur est fournie, compatible avec les standards les plus courants tels que les sur-courants, la protection thermique, les sous-tensions et la sortie hors gamme.<br \/>\nCette cinqui&egrave;me g&eacute;n&eacute;ration de r&eacute;gulateur LNB propose aussi les composants monovoie A8300 et A8300-1 visant les applications TV LCD avec un DiSEqC bidirectionnel et l&rsquo;A8304 pour les applications DiSEqC unidirectionnel.<br \/>\nEncapsul&eacute; dans un boitier QFN-32 de 5 x 5 mm avec semelle pour la dissipation thermique (suffixe ET), l&rsquo;A8302SESTR-T est garanti sans plomb, avec un &eacute;tamage 100% &agrave; l&rsquo;&eacute;tain mat. <\/p>\n<p><strong> <\/strong><\/p>\n<p><a href=\"http:\/\/www.allegromicro.com\/en\/Products\/Regulators-And-Lighting\/LNB-Regulators-For-Satellite-Set-Top-Boxes\/A8302.aspx\" target=\"_blank\" title=\"www.allegromicro.com\/A8302\" rel=\"noopener\">www.allegromicro.com\/A8302<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dernier n\u00e9 de la famille de circuit r\u00e9gulateur LNB (Low Noise Block) de cinqui\u00e8me g\u00e9n\u00e9ration d\u2019Allegro MicroSystems, le double r\u00e9gulateur LNB A8302 propose de nombreuses caract\u00e9ristiques et fonctions qui peuvent \u00eatre utilis\u00e9es pour des applications de r\u00e9ception par satellite. <\/p>\n","protected":false},"author":22,"featured_media":230901,"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-230900","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>R\u00e9gulateur LNB double pour syst\u00e8mes de r\u00e9ception par satellite 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