{"id":166715,"date":"2017-07-18T02:11:10","date_gmt":"2017-07-18T02:11:10","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/amplificateur-operationnel-a-derive-de-tension-nulle-consommant-seulement-13%c2%b5a\/"},"modified":"2017-07-18T02:11:10","modified_gmt":"2017-07-18T02:11:10","slug":"amplificateur-operationnel-a-derive-de-tension-nulle-consommant-seulement-13%c2%b5a","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/amplificateur-operationnel-a-derive-de-tension-nulle-consommant-seulement-13%c2%b5a\/","title":{"rendered":"Amplificateur op\u00e9rationnel \u00e0 d\u00e9rive de tension nulle consommant seulement 1,3\u00b5A"},"content":{"rendered":"<p>Cet amplificateur de tr\u00e8s basse puissance maintient un niveau de pr\u00e9cision sans compromis&nbsp;: le d\u00e9calage du z\u00e9ro de tension d\u2019entr\u00e9e est de 5\u00b5V max. \u00e0 25\u00b0C, la d\u00e9rive est de 0,06\u00b5V\/\u00b0C max., de -40\u00b0C \u00e0 125\u00b0C. Le courant de polarisation d\u2019entr\u00e9e est de 15pA max., \u00e0 25\u00b0C, et de 100pA de -40\u00b0C \u00e0 125\u00b0C. Ces caract\u00e9ristiques d\u2019entr\u00e9e, de grande pr\u00e9cision, permettent l\u2019emploi de r\u00e9sistances, de forte valeur, dans la boucle de retour, ce qui maintient une basse consommation, sans compromis avec la pr\u00e9cision, m\u00eame \u00e0 temp\u00e9rature \u00e9lev\u00e9e.<\/p>\n<p>Les tensions d\u2019entr\u00e9e et de sortie permettent l\u2019emploi d\u2019une alimentation unique et am\u00e9liorent la gamme dynamique. Un filtre d\u2019EMI (interf\u00e9rence \u00e9lectromagn\u00e9tique), int\u00e9gr\u00e9, procure une r\u00e9jection d\u2019interf\u00e9rences magn\u00e9tiques de 114dB \u00e0 1,8GHz. Avec un bas niveau de bruit 1\/f, inh\u00e9rent \u00e0 son architecture \u00e0 d\u00e9rive de tension nulle, le LTC2063 convient \u00e0 l\u2019amplification et au traitement de signaux basse fr\u00e9quence, en provenance de capteurs, dans les dispositifs haute temp\u00e9rature de l\u2019industrie et de l\u2019automobile ainsi que dans les applications portables et de r\u00e9seau \u00e0 capteur sans fil. Le LTC2063 est disponible en bo\u00eetiers SOT-23 et SC70. La version SC70 comprend un mode arr\u00eat qui r\u00e9duit la consommation en courant \u00e0 90nA quand l\u2019amplificateur n\u2019est pas utilis\u00e9. Ceci permet des applications \u00e0 capteur, de tr\u00e8s faible rapport cyclique. Par exemple, un circuit de capteur d\u2019oxyg\u00e8ne, de pr\u00e9cision et de faible rapport cyclique, pr\u00e9sent\u00e9 dans la fiche de caract\u00e9ristiques, consomme un courant moyen de moins de 200nA.<\/p>\n<p>\u00ab&nbsp;Le LTC2063 rend possible la r\u00e9alisation d\u2019une toute nouvelle classe de solutions de mesures de pr\u00e9cision qui peuvent \u00eatre dispos\u00e9es n\u2019importe o\u00f9,&nbsp;\u00bb pr\u00e9cisait Ross Yu, directeur marketing chez Dust Networks. \u00ab&nbsp;Sa tr\u00e8s basse puissance et sa grande pr\u00e9cision sont les compl\u00e9ments parfaits des r\u00e9seaux \u00e0 capteur sans fil SmartMesh<sup> <\/sup>de<sup> <\/sup>Dust Networks, ce qui accro\u00eet les moyens d\u2019atteindre des mesures de pr\u00e9cision dans des endroits non accessibles auparavant.&nbsp;\u00bb<\/p>\n<p>Un exemple en est la carte de r\u00e9f\u00e9rence de mesure de courant, sans fil, la DC2369A, qui utilise le LTC2063 et le module LTP<sup>TM<\/sup>5901-IPM de SmartMesh IP<sup>TM<\/sup> et d\u2019autres composants de tr\u00e8s basse puissance pour r\u00e9aliser une plateforme de mesure de courant flottant, isol\u00e9e, qui fonctionne sur de petites batteries, pendant des ann\u00e9es. Le LTC2063 fonctionne sur des alimentations de tensions comprises entre 1,7V et 5,25V et est enti\u00e8rement sp\u00e9cifi\u00e9 de -40\u00b0C \u00e0 125\u00b0C.&nbsp;<\/p>\n<p><a href=\"http:\/\/www.linear.com\/product\/LTC2063\">www.linear.com\/product\/LTC2063<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Analog Devices, Inc., ayant acquis r\u00e9cemment Linear Technology Corporation, annonce le LTC2063, un amplificateur op\u00e9rationnel \u00e0 d\u00e9rive de tension nulle, qui ne consomme que 1,3\u00b5A typique (2\u00b5A max.) sur une alimentation de 1,8V. <\/p>\n","protected":false},"author":9,"featured_media":166716,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1141],"class_list":["post-166715","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Amplificateur op\u00e9rationnel \u00e0 d\u00e9rive de tension nulle consomm...<\/title>\n<meta name=\"description\" content=\"Analog Devices, Inc., ayant acquis r\u00e9cemment Linear Technology Corporation, annonce le LTC2063, un amplificateur op\u00e9rationnel \u00e0 d\u00e9rive de tension nulle,...\" \/>\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\/166715\/\" 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