{"id":224697,"date":"2012-07-05T22:00:00","date_gmt":"2012-07-05T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/amplificateurs-audio-classe-d-a-large-plage-dalimentation-et-taux-de-commutation-haut-de-gamme\/"},"modified":"2012-07-05T22:00:00","modified_gmt":"2012-07-05T22:00:00","slug":"amplificateurs-audio-classe-d-a-large-plage-dalimentation-et-taux-de-commutation-haut-de-gamme","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/amplificateurs-audio-classe-d-a-large-plage-dalimentation-et-taux-de-commutation-haut-de-gamme\/","title":{"rendered":"Amplificateurs audio classe D \u00e0 large plage d&rsquo;alimentation et taux de commutation haut de gamme"},"content":{"rendered":"<p class=\"MsoNormal\">Ces dispositifs pr&eacute;sentent une compatibilit&eacute; broche &agrave; broche et logicielle et peuvent prendre en charge un routage de circuit imprim&eacute; simple face, ce qui permet aux concepteurs de r&eacute;utiliser une simple face sur plusieurs mod&egrave;les et de r&eacute;duire leurs co&ucirc;ts de production.<br \/>\nLeur large plage d&rsquo;alimentation de 4,5 V &agrave; 26 V permet l&rsquo;exploitation simultan&eacute;e d&rsquo;une alimentation sur secteur et par batterie sur le m&ecirc;me routage. La dur&eacute;e de vie de la batterie dans les haut-parleurs et dans les stations audio portables est ainsi plus longue. Les FET thermo-efficaces assurent une exploitation sur 2&nbsp;x&nbsp;30&nbsp;W sans qu&rsquo;il soit n&eacute;cessaire d&rsquo;avoir recours &agrave; un dissipateur thermique ou sur une puissance de 2&nbsp;x&nbsp;50W avec un dissipateur thermique pour le TPA3116D2. Les taux de commutation programmables &eacute;lev&eacute;s allant de 400&nbsp;kHz &agrave; 1,2&nbsp;MHz autorisent une exploitation sans filtre des inducteurs et une absence d&rsquo;interf&eacute;rences pour un son audio clair sans distorsion. De plus, la conception en boucle ferm&eacute;e offre un excellent taux de rejection du bruit d&rsquo;alimentation (PSRR) et des taux de commutation de signaux plus faibles, am&eacute;liorant ainsi les performances vis-&agrave;-vis des interf&eacute;rences &eacute;lectromagn&eacute;tiques (IEM). Enfin, la r&eacute;sistance drain-source (RDS) de 120&nbsp;microhms &agrave; 2&nbsp;x&nbsp;30W, soit 20% de consommation en moins que la majorit&eacute; des circuits similaires, am&eacute;liore l&rsquo;efficacit&eacute; du dispositif en diminuant la r&eacute;sistance pendant le fonctionnement.<br \/>\nPr&eacute;sent&eacute;s en bo&icirc;tier HTSSOP 32 broches de 10 x6 mm, ces amplificateur peuvent &ecirc;tre assujettis &agrave; la gamme de codecs propri&eacute;taire PCM510x pour traiter l&rsquo;entr&eacute;e num&eacute;rique audio. Cette gamme pr&eacute;sente une &eacute;mission de bruit hors bande ultra faible, une suppression de la gigue et &nbsp;une architecture sans claquements avec un mode muet progressif et analogique. Des modules d&rsquo;&eacute;valuation sont &eacute;galement propos&eacute;s<\/p>\n<p><a title=\"www.ti.com\/tpa3116d2-prfr\" target=\"_blank\" href=\"http:\/\/www.ti.com\/tpa3116d2-prfr\" rel=\"noopener\">www.ti.com\/tpa3116d2-prfr<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Texas Instruments lance trois amplificateurs st\u00e9r\u00e9o de classe D \u00e0 entr\u00e9e analogique destin\u00e9s \u00e0 une utilisation sur des haut-parleurs, des solutions pour le march\u00e9 de l\u2019automobile, des stations audio portables et des t\u00e9l\u00e9visions LCD. R\u00e9f\u00e9renc\u00e9s TPA3116D2, TPA3118D2 et TPA3130D2, ces amplificateurs se caract\u00e9risent par leur taux de commutation programmable tr\u00e8s \u00e9lev\u00e9 et leur large plage d&rsquo;alimentation, ce qui permet d&rsquo;obtenir une sortie audio haute qualit\u00e9 et haute efficacit\u00e9. <\/p>\n","protected":false},"author":22,"featured_media":224698,"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-224697","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Amplificateurs audio classe D \u00e0 large plage d&#039;alimentation et ...<\/title>\n<meta name=\"description\" content=\"Texas Instruments lance trois amplificateurs st\u00e9r\u00e9o de classe D \u00e0 entr\u00e9e analogique destin\u00e9s \u00e0 une utilisation sur des haut-parleurs, des solutions...\" \/>\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\/224697\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Amplificateurs audio classe D \u00e0 large plage d&#039;alimentation et taux de commutation haut de gamme\" \/>\n<meta property=\"og:description\" content=\"Texas Instruments lance trois amplificateurs st\u00e9r\u00e9o de classe D \u00e0 entr\u00e9e analogique destin\u00e9s \u00e0 une utilisation sur des haut-parleurs, des solutions pour le march\u00e9 de l\u2019automobile, des stations audio portables et des t\u00e9l\u00e9visions LCD. 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