{"id":223977,"date":"2012-04-02T22:00:00","date_gmt":"2012-04-02T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/melangeur-infradyne-de-grande-linearite\/"},"modified":"2012-04-02T22:00:00","modified_gmt":"2012-04-02T22:00:00","slug":"melangeur-infradyne-de-grande-linearite","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/melangeur-infradyne-de-grande-linearite\/","title":{"rendered":"M\u00e9langeur infradyne de grande lin\u00e9arit\u00e9"},"content":{"rendered":"

Ces caractéristiques permettent une gamme dynamique excellente à la fois pour les récepteurs principaux et les récepteurs à pré-distorsion numérique. De plus, l’entrée RF peut supporter de forts signaux d’interférences sans dégrader sa figure de bruit de façon significative, ce qui préserve la sensibilité du récepteur et en améliore la robustesse. La valeur atteinte de 6GHz convient idéalement aux systèmes sans fil comme les liens hyperfréquences point-à-point, les radios à bande sous licence libre WiMAX 5GHz, les récepteurs de satellite, les systèmes radars, de l’avionique, les radios de sécurité publique et de test RF.
\nCe circuit comprend un amplificateur FI intégré, de gain élevé, avec des fréquences FI allant jusqu’à 1GHz. Un amplificateur OL tampon et deux transformateurs balun RF sont également intégrés à la puce. Cela permet aux entrées RF et OL d’être unipolaires et adaptées 50 ohms. L’entrée de l’OL ne requiert un niveau de signal du pilote que de +2 dBm. Ces caractéristiques permettent de simplifier la conception, avec moins de composants externes, il en résulte une application de taille plus petite.
\nCe composant fonctionne sur une seule alimentation de 3,3 V, avec une consommation de 194 mA. Il possède une fonction d’arrêt avec une durée de mise en marche et d’arrêt de 0,6 µs, acceptant le fonctionnement en Burst Mode ou les systèmes TDD (duplex par division temporelle). Quand il est désactivé, il ne consomme que 500 µA au maximum. Il est présenté en boîtier plastique QFN 16 broches de 4 x 4 mm.<\/p>\n

www.linear.com\/product\/LTC5544<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Linear Technology annonce le LTC5544, un m\u00e9langeur infradyne, \u00e0 large gamme dynamique, couvrant la gamme de fr\u00e9quences de 4 GHz \u00e0 6 GHz. Il pr\u00e9sente une grande lin\u00e9arit\u00e9 avec un IIP3 (point d\u2019interception d\u2019entr\u00e9e du 3\u00e8me ordre) de 25,9 dBm, un gain de conversion \u00e9lev\u00e9 de 7,8 dB provenant de son amplificateur FI int\u00e9gr\u00e9, et une figure de bruit de 11,3 dB. Il fonctionne sur une seule alimentation de 3,3V.<\/p>\n","protected":false},"author":22,"featured_media":223978,"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-223977","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"M\u00e9langeur infradyne de grande lin\u00e9arit\u00e9 ...<\/title>\n<meta name=\"description\" content=\"Linear Technology annonce le LTC5544, un m\u00e9langeur infradyne, \u00e0 large gamme dynamique, couvrant la gamme de fr\u00e9quences de 4 GHz \u00e0 6 GHz. 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