{"id":16998,"date":"2021-12-01T11:22:27","date_gmt":"2021-12-01T03:22:27","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=16998"},"modified":"2022-08-04T15:39:36","modified_gmt":"2022-08-04T07:39:36","slug":"16998","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/tech-info\/engineer\/emc-column\/16998","title":{"rendered":"\u7b2c6\u7bc7 \u4ea7\u54c1\u89c4\u683c\u4e66\uff083\uff09 \u5e38\u89c1\u7684EMC\u8bc4\u4f30\u6307\u6807\u793a\u4f8b"},"content":{"rendered":"
<\/div>\n

\u5e38\u89c1\u7684EMC\u8bc4\u4f30\u6307\u6807\u793a\u4f8b\u5168\u6570\u68c0\u67fb\u7684\u89c4\u683c\u503c\u9879\u76ee\u4e2d\u5305\u62ecEMC\u8bc4\u4f30\u6307\u6807\u3002\u9488\u5bf9\u534a\u5bfc\u4f53\u96c6\u6210\u7535\u8def\uff08LSI\u548cIC\uff09\u4ea7\u54c1\u89c4\u683c\u4e66\u4e2d\u63d0\u4f9b\u7684\u89c4\u683c\u503c\uff0c\u7f57\u59c6\u662f\u4ee5\u600e\u6837\u7684\u6bd4\u4f8b\u548c\u9891\u7387\u8fdb\u884c\u68c0\u67e5\u7684\u5462\uff1f<\/p>\n

\u901a\u8fc7\u524d\u4e24\u7bc7\u4e13\u680f\uff0c\u6211\u60f3\u5927\u5bb6\u5bf9\u4ea7\u54c1\u89c4\u683c\u4e66\u5df2\u7ecf\u6709\u4e86\u5927\u6982\u4e86\u89e3\u3002\u5173\u4e8e\u4ea7\u54c1\u89c4\u683c\u4e66\uff0c\u7ecf\u5e38\u6709\u4eba\u4f1a\u95ee\uff1a\u9488\u5bf9\u534a\u5bfc\u4f53\u96c6\u6210\u7535\u8def\uff08LSI\u548cIC\uff09\u4ea7\u54c1\u89c4\u683c\u4e66\u4e2d\u63d0\u4f9b\u7684\u89c4\u683c\u503c\uff0c\u4f60\u4eec\u662f\u4ee5\u600e\u6837\u7684\u6bd4\u4f8b\u548c\u9891\u7387\u8fdb\u884c\u68c0\u67e5\u7684\u5462\uff1f\u6bd4\u5982\u8fd9\u6837\u7684\u95ee\u9898\uff1a<\/p>\n

Q\uff1a\u51fa\u8d27\u68c0\u67fb\u65f6\u6309\u7167\u5343\u5206\u4e4b\u4e00\u7684\u6bd4\u4f8b\uff1f\u8fd8\u662f\u6309\u7167\u767e\u5206\u4e4b\u4e00\u7684\u6bd4\u4f8b\uff1f
\nQ\uff1a\u89c4\u683c\u503c\u4e2d\u7684\u6240\u6709\u9879\u76ee\u90fd\u68c0\u67fb\u5417\uff1f\u8fd8\u662f\u53ea\u68c0\u67e5\u4e86\u4e3b\u8981\u9879\u76ee\uff1f
\nQ\uff1a\u53ea\u6709\u5728\u4ea7\u54c1\u6279\u6b21\u6709\u66f4\u65b0\u65f6\u624d\u5b9e\u65bd\u68c0\u67fb\u5417\uff1f<\/p>\n

\u9488\u5bf9\u8fd9\u4e9b\u63d0\u95ee\uff0c\u6211\u4eec\u7684\u56de\u7b54\u662f\uff1a<\/p>\n

A\uff1a\u6211\u4eec极悦娱乐\u5b9e\u65bd\u6240\u6709\u9879\u76ee\u7684\u5168\u6570\u68c0\u67fb\u3002<\/p>\n

\u6240\u6709\u8981\u51fa\u8d27\u7684\u4ea7\u54c1\u90fd\u4f1a\u901a\u8fc7\u81ea\u52a8\u51fa\u8d27\u68c0\u6d4b\u673a\u4e00\u4e2a\u4e00\u4e2a\u5730\u8fdb\u884c\u68c0\u67e5\u3002\u867d\u7136\u68c0\u67fb\u9879\u76ee\u6570\u4e5f\u56e0\u4ea7\u54c1\u7c7b\u578b\u800c\u5f02\uff0c\u4f46\u4f1a\u6d89\u53ca\u5230\u51e0\u767e\u9879\u5230\u51e0\u5343\u9879\u7684\u68c0\u67e5\uff0c\u8fd9\u4e9b\u662f\u6240\u6709\u9879\u76ee\u5168\u6570\u68c0\u67e5\u7684\u3002\u5176\u4e2d\uff0c\u6709\u4e9b\u4ea7\u54c1\u751a\u81f3\u8981\u5b9e\u65bd\u9ad8\u6e29\u6d4b\u8bd5\u3002<\/p>\n

\u5982\u679c\u8bb2\u5f97\u518d\u8be6\u7ec6\u4e00\u70b9\uff0c\u90a3\u5c31\u662f\u5728\u534a\u5bfc\u4f53\u96c6\u6210\u7535\u8def\uff08LSI\u548cIC\uff09\u8fd8\u5728\u5176\u66f4\u57fa\u7840\u7684Si\u6676\u5706\u72b6\u6001\uff08\u5728\u5706\u76d8\u72b6Si\u7535\u8def\u677f\u4e0a\u88c5\u6709\u51e0\u679aLSI\u6216IC\u7684\u72b6\u6001\uff09\u4e0b\u5c31\u4f1a\u8fdb\u884c\u6240\u6709\u9879\u76ee\u7684\u5168\u6570\u68c0\u67e5\u3002\u7136\u540e\uff0c\u4f1a\u9010\u4e2a\u8fdb\u884c\u5212\u7247\uff08\u5207\u5272\uff09\u3001\u5c01\u88c5\u5bc6\u5c01\uff08\u6811\u8102\u5bc6\u5c01\u7b49\uff09\uff0c\u5e76\u518d\u6b21\u8fdb\u884c\u6240\u6709\u9879\u76ee\u7684\u5168\u6570\u68c0\u67fb\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u53ea\u6709\u7b26\u5408\u591a\u9053\u51fa\u8d27\u68c0\u6d4b\u8981\u6c42\u7684\u4ea7\u54c1\u624d\u4f1a\u51fa\u5382\u3002\u5728\u4ea7\u54c1\u7684\u54c1\u8d28\u4fdd\u8bc1\u65b9\u9762\uff0c\u6709\u5404\u79cd\u65b9\u6cd5\u548c\u601d\u8def\uff0c\u4f46极悦娱乐\u57fa\u672c\u4e0a\u90fd\u662f\u201c\u6240\u6709\u9879\u76ee\u5168\u6570\u68c0\u67fb\u201d\u3002<\/p>\n

\u4e0b\u9762\u6211\u4eec\u6765\u8c08\u8c08\u201c\u7535\u78c1\u517c\u5bb9\u6027\uff08EMC\uff09\u201d\u3002\u5728\u8fdb\u884c\u5168\u6570\u68c0\u67fb\u7684\u89c4\u683c\u9879\u76ee\u4e2d\uff0c\u4e5f\u5305\u62ecEMC\u7684\u66ff\u4ee3\u8bc4\u4f30\u6307\u6807\u3002\u5e38\u89c1\u7684\u6709PSRR<\/strong>(Power Supply Rejection Ratio)\u3001CMRR<\/strong>(Common Mode Rejection Ratio)\u3001EMIRR<\/strong>(EMI Rejection Ratio)\u7b49\u3002<\/p>\n

PSRR<\/strong>\u662f\u7535\u6e90\u6291\u5236\u6bd4\uff0c\u662f\u8868\u793a\u201c\u5f53\u4f7f\u7535\u6e90\u7535\u538b\u6ce2\u52a8\u65f6\u8f93\u51fa\u4f1a\u53d1\u751f\u600e\u6837\u7684\u6ce2\u52a8\u201d\u7684\u6bd4\u7387\u3002CMRR<\/strong>\u662f\u5171\u6a21\u6291\u5236\u6bd4\uff0c\u662f\u4f7f\u5dee\u5206\u8f93\u5165\u5728\u76f8\u540c\u7535\u4f4d\u4e0b\u6ce2\u52a8\u65f6\u5728\u8f93\u51fa\u4e2d\u53d1\u751f\u7684\u6ce2\u52a8\u6bd4\u7387\u3002<\/p>\n

PSRR\u548cCMRR\u867d\u7136\u90fd\u662f\u5dee\u5206\u8fd0\u7b97\u653e\u5927\u5668\uff08Op Amps\uff09\u7b49\u89c4\u5b9a\u7684DC\u7279\u6027\uff0c\u4f46\u662f\uff0c\u7531\u4e8e\u6d89\u53ca\u5230\u9891\u7387\u7279\u6027\uff0c\u56e0\u6b64\u4e5f\u4f1a\u572810[Hz]~1[MHz]\u7684\u9891\u7387\u8303\u56f4\u5185\u8fdb\u884c\u6d4b\u8bd5\u3002\u572810[Hz]\u7b49\u4f4e\u9891\u8303\u56f4\uff0c\u6709\u5f88\u591a\u5b9e\u529b\u8fbe\u5230100[dB]\u4ee5\u4e0a\u7684\u4ea7\u54c1\uff0c\u5927\u81f4\u6ce2\u52a8\u57281\/100,000\u4ee5\u5185\uff08\u7535\u6c14\u7279\u6027\u66f2\u7ebf\u4ece\u5de6\u5230\u53f3\u5448\u4e0b\u964d\u72b6\uff0c\u9891\u7387\u8d8a\u4f4e\u7279\u6027\u8d8a\u597d\uff09\u3002<\/p>\n

\u6700\u540e\u7684EMIRR<\/strong>\u88ab\u79f0\u4e3a\u201cEMI\u8010\u53d7\u80fd\u529b\u201d\u6216\u201c\u7535\u78c1\u5e72\u6270\u6291\u5236\u6bd4\u201d\u3002\u8fd9\u662f\u4e00\u4e2a\u8868\u793a\u80fd\u591f\u627f\u53d7\u591a\u5c11\u9ad8\u9891\u566a\u58f0\u7684\u6307\u6807\u3002\u53ef\u80fd\u7406\u89e3\u8d77\u6765\u6709\u4e9b\u96be\uff0c\u8fd9\u662f\u5c06RF\uff08\u9ad8\u9891\uff09\u4fe1\u53f7\u65bd\u52a0\u5230\u8f93\u5165\u5f15\u811a\uff08+\u4fa7\uff09\u540e\u7684\u5cf0\u503c\u7535\u538b\u4e0e\u8f93\u5165\u6362\u7b97\u7684\u5931\u8c03\u7535\u538b\u53d8\u5316\u91cf\u4e4b\u95f4\u7684\u6bd4\u7387\u3002<\/p>\n

EMIRR\u662f\u5728\u5927\u7ea61[MHz]~\u51e0[GHz]\u7684\u9891\u7387\u8303\u56f4\u5185\u8fdb\u884c\u6d4b\u8bd5\uff0c\u6570\u503c\u8d8a\u5927\uff0c\u7279\u6027\u8d8a\u597d\u3002\u5728\u51e0[GHz]\u65f6\uff0cEMIRR\u7684\u503c\u4e3a100[dB]\u5de6\u53f3\uff0c\u7279\u6027\u66f2\u7ebf\u5448\u4ece\u5de6\u5230\u53f3\u4e0a\u5347\u8d8b\u52bf\u3002\u5728\u5dee\u5206\u8fd0\u7b97\u653e\u5927\u5668\u7b49\u5668\u4ef6\u4e2d\uff0c\u534a\u5bfc\u4f53\u96c6\u6210\u7535\u8def\u7684\u9891\u7387\u54cd\u5e94\u6027\u80fd\u5728\u9ad8\u9891\u65f6\u4f1a\u53d8\u5dee\uff0c\u56e0\u6b64\u81ea\u7136EMIRR\u7684\u503c\u4f1a\u53d8\u597d\u3002<\/p>\n

\u901a\u8fc7\u6bd4\u8f83\u8fd9\u4e9b\u503c\uff0c\u53ef\u4ee5\u8bc4\u4f30\u4ea7\u54c1\u7684\u90e8\u5206EMC\u7279\u6027\u3002\u4e4b\u6240\u4ee5\u5728\u8fd9\u91cc\u8868\u8ff0\u4e3a\u201c\u90e8\u5206EMC\u7279\u6027\u201d\uff0c\u662f\u56e0\u4e3a\u5728IEC\u56fd\u9645\u6807\u51c6\uff08\u5305\u62ecCISPR\uff09\u548cISO\u56fd\u9645\u6807\u51c6\u4e2d\u5bf9EMC\u7279\u6027\u89c4\u5b9a\u4e86\u5f88\u591a\u9879\u76ee\u3002<\/p>\n

\u611f\u8c22\u60a8\u9605\u8bfb\u672c\u6587\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5e38\u89c1\u7684EMC\u8bc4\u4f30\u6307\u6807\u793a\u4f8b\u5168\u6570\u68c0\u67fb\u7684\u89c4\u683c\u503c\u9879\u76ee\u4e2d\u5305\u62ecEMC\u8bc4\u4f30\u6307\u6807\u3002\u9488\u5bf9\u534a\u5bfc\u4f53\u96c6\u6210\u7535\u8def\uff08LSI\u548cIC\uff09\u4ea7\u54c1\u89c4\u683c\u4e66\u4e2d\u63d0\u4f9b\u7684\u89c4\u683c\u503c\uff0c\u7f57\u59c6\u662f\u4ee5\u600e\u6837\u7684\u6bd4\u4f8b\u548c\u9891\u7387\u8fdb\u884c\u68c0\u67e5\u7684\u5462\uff1f \u901a\u8fc7\u524d\u4e24\u7bc7\u4e13\u680f\uff0c\u6211\u60f3\u5927\u5bb6\u5bf9\u4ea7\u54c1\u89c4\u683c\u4e66\u5df2\u7ecf\u6709\u4e86\u5927\u6982\u4e86\u89e3\u3002 […]","protected":false},"author":4,"featured_media":16833,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1558],"tags":[],"class_list":["post-16998","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-emc-column"],"acf":[],"wps_subtitle":"","_links":{"self":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/16998","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/comments?post=16998"}],"version-history":[{"count":3,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/16998\/revisions"}],"predecessor-version":[{"id":17999,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/16998\/revisions\/17999"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/media\/16833"}],"wp:attachment":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/media?parent=16998"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/categories?post=16998"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/tags?post=16998"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}