{"id":16479,"date":"2021-03-05T07:31:44","date_gmt":"2021-03-05T07:31:44","guid":{"rendered":"https:\/\/\/circuits-de-mesure-de-precision-doublant-lautonomie-des-batteries\/"},"modified":"2021-03-05T07:31:44","modified_gmt":"2021-03-05T07:31:44","slug":"circuits-de-mesure-de-precision-doublant-lautonomie-des-batteries","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/circuits-de-mesure-de-precision-doublant-lautonomie-des-batteries\/","title":{"rendered":"Circuits de mesure de pr\u00e9cision doublant l\u2019autonomie des batteries"},"content":{"rendered":"<p>Pour concevoir des capteurs IoT aliment\u00e9s par batterie, les ing\u00e9nieurs doivent mettre au point des syst\u00e8mes permettant de prolonger l&rsquo;autonomie des batteries, tout en \u00e9tant capables de mesurer pr\u00e9cis\u00e9ment les tensions, les forces ou les pressions du monde r\u00e9el. Les budgets \u00e9nerg\u00e9tiques exigent que ces capteurs atteignent une grande pr\u00e9cision d\u00e8s la premi\u00e8re mesure, avec peu ou pas d&rsquo;\u00e9talonnage. Par ailleurs, les applications industrielles et l&rsquo;Internet des objets (IoT) exigent que ces capteurs r\u00e9sistent \u00e0 des conditions extr\u00eames de temp\u00e9rature, d&rsquo;humidit\u00e9 et de contraintes m\u00e9caniques.<\/p>\n<p>Nouveaux CI de mesure de pr\u00e9cision \u00ab Essential Analog \u00bb Maxim Integrated<\/p>\n<ul>\n<li>L&rsquo;amplificateur d&rsquo;instrumentation MAX41400 am\u00e9liore la pr\u00e9cision du syst\u00e8me de capteur d&rsquo;un facteur 4, et prolonge de 55 % l&rsquo;autonomie de la batterie par rapport \u00e0 l&rsquo;offre concurrente la plus proche. Le MAX41400 assure un faible offset de 25 \u00b5V et un niveau de bruit r\u00e9duit, et offre un gain programmable, tout en ne consommant que 65 \u00b5A.<\/li>\n<li>Le MAX40108 est l&rsquo;amplificateur op\u00e9rationnel de pr\u00e9cision pr\u00e9sentant la plus basse tension d\u2019alimentation de sa cat\u00e9gorie, en \u00e9tant capable de fonctionner \u00e0 partir d&rsquo;une tension de 0,9 V seulement. La combinaison d&rsquo;une faible tension d&rsquo;alimentation, d&rsquo;une consommation r\u00e9duite et d&rsquo;un courant de repos de 25,5 \u00b5A, permet aux ing\u00e9nieurs de doubler l&rsquo;autonomie de la batterie du capteur.<\/li>\n<li>L&rsquo;horloge temps-r\u00e9el (RTC) MAX31343 \u00e0 interface I\u00b2C et oscillateur MEMS int\u00e9gr\u00e9 offre une pr\u00e9cision temporelle de \u00b1 5 ppm, nettement meilleure que celle de sa concurrente la plus proche, ainsi qu&rsquo;une protection robuste gr\u00e2ce au r\u00e9sonateur MEMS. Gr\u00e2ce \u00e0 son r\u00e9sonateur int\u00e9gr\u00e9, le MAX31343 s\u2019affranchit des d\u00e9faillances m\u00e9caniques des quartz et permet le conditionnement dans un minuscule bo\u00eetier WLP, plus petit que celui de tous les produits concurrents du march\u00e9. Le conditionnement innovant, d\u00e9velopp\u00e9 par Maxim Integrated, autorise une combinaison unique de taille, de pr\u00e9cision et de robustesse.<\/li>\n<\/ul>\n<p style=\"margin-left:18.75pt\"><a href=\"https:\/\/maxim.click\/Maxim_Essential_Analog_Solutions\" target=\"_blank\" rel=\"noopener\">maxim.click\/Maxim_Essential_Analog_Solutions<\/a><\/p>\n<p style=\"margin-left:18.75pt\"><a href=\"https:\/\/maxim.click\/MAX41400_Product\" target=\"_blank\" rel=\"noopener\">maxim.click\/MAX41400_Product<\/a><\/p>\n<p style=\"margin-left:18.75pt\"><a href=\"https:\/\/maxim.click\/MAX40108_Product\">maxim.click\/MAX40108_Product<\/a><\/p>\n<p style=\"margin-left:18.75pt\"><a href=\"https:\/\/maxim.click\/MAX31343_Product\">maxim.click\/MAX31343_Product<\/a><\/p>\n<p style=\"margin-left:37.5pt\">&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les concepteurs vont d\u00e9sormais pouvoir doubler l&rsquo;autonomie des batteries, tout en assurant une protection robuste et une pr\u00e9cision maximale aux applications IoT industrielles ou de sant\u00e9, gr\u00e2ce \u00e0 trois nouveaux circuits int\u00e9gr\u00e9s de la gamme \u00ab Essential Analog \u00bb de Maxim Integrated Products, Inc. : amplificateur d&rsquo;instrumentation MAX41400, amplificateur op\u00e9rationnel de pr\u00e9cision MAX40108, et horloge temps-r\u00e9el (RTC) MAX31343 \u00e0 oscillateur MEMS int\u00e9gr\u00e9.<\/p>\n","protected":false},"author":9,"featured_media":16480,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1141],"class_list":["post-16479","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Circuits de mesure de pr\u00e9cision doublant l\u2019autonomie des bat...<\/title>\n<meta name=\"description\" content=\"Les 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