![\"PCB\u7535\u8def\u677f\u7684EMI\u8bbe\u8ba1\u89c4\u8303\u6b65\u9aa4\"](\"\/wp-content\/uploads\/2021\/12\/20211215131842-61b9eb32e0caa.jpg\")
<\/p>\n\n\t\u3000\u3000\u6709\u5de5\u4f5c\u7ecf\u9a8c\u7684\u5f00\u5173\u7535\u6e90\u5f00\u53d1\u4eba\u5458\u90fd\u4e86\u89e3\uff0c\u5728PCB\u8bbe\u8ba1\u5168\u8fc7\u7a0b\u4e2d\u4fbf\u5bf9EMI\u5f00\u5c55\u6291\u6b62\uff0c\u4fbf\u53ef\u4ee5\u5728\u6700\u5927\u7684\u6c34\u5e73\u4e0a\u5728\u6700\u7ec8\u7684\u73af\u8282\u4e2d\u4e3aEMI\u6291\u6b62\u7684\u88c5\u4fee\u8bbe\u8ba1\u8282\u7ea6\u5341\u5206\u591a\u7684\u6642\u95f4\u3002\u6587\u4e2d\u5c06\u4e3a\u6211\u4eec\u89e3\u8bfbPCB\u4e4b\u4e2dEMI\u8bbe\u8ba1\u65b9\u6848\u4e2d\u7684\u6807\u51c6\u6d41\u7a0b\uff0c\u6709\u5174\u8da3\u7684\u597d\u670b\u53cb\u5feb\u770b\u6765\u4e00\u4e00\u4e0b\u5427\u3002<\/p>\n
\n\t\u3000\u3000IC\u7684\u5f00\u5173\u7535\u6e90\u89e3\u51b3<\/p>\n
\n\t\u3000\u3000\u786e\u4fdd\u6bcf\u4e00\u4e2aIC\u7684\u5f00\u5173\u7535\u6e90PIN\u90fd\u662f\u6709\u4e00\u4e2a0.1UF\u7684\u53bb\u8026\u7535\u5bb9\uff0c\u9488\u5bf9BGACHIP\uff0c\u89c4\u5b9a\u5728BGA\u7684\u56db\u89d2\u5404\u81ea\u67090.1UF\u30010.01UF\u7684\u7535\u5bb9\u5668\u51718\u4e2a\u3002\u5bf9\u5e03\u7ebf\u7684\u5f00\u5173\u7535\u6e90\u7279\u522b\u662f\u5728\u8981\u7559\u610f\u52a0\u8026\u5408\u7535\u5bb9\uff0c\u5982VTT\u7b49\u3002\u8fd9\u4e0d\u4ec5\u4ec5\u5bf9\u53ef\u9760\u6027\u6709\u5f71\u54cd\uff0c\u5bf9EMI\u4e5f\u662f\u6709\u8f83\u5927\u7684\u5371\u5bb3\u3002<\/p>\n
\n\t\u3000\u3000<\/p>\n
\n\t\u3000\u3000\u949f\u8868\u7ebf\u7684\u89e3\u51b3<\/p>\n
\n\t\u3000\u30001\uff09\u63d0\u8bae\u5148\u8d70\u949f\u8868\u7ebf\u3002<\/p>\n
\n\t\u3000\u30002\uff09\u5de5\u4f5c\u9891\u7387\u9ad8\u4e8e\u6216\u7b49\u4e8e66M\u7684\u949f\u8868\u7ebf\uff0c\u6bcf\u6761\u8fc7\u5b54\u773c\u4e0d\u5fc5\u8d85\u51fa2\u4e2a\uff0c\u5747\u503c\u4e0d\u80fd\u8d85\u8fc71.5\u4e2a\u3002<\/p>\n
\n\t\u3000\u30003\uff09\u5de5\u4f5c\u9891\u7387\u4f4e\u4e8e66M\u7684\u949f\u8868\u7ebf\uff0c\u6bcf\u6761\u8fc7\u5b54\u773c\u4e0d\u5fc5\u9ad8\u4e8e3\u4e2a\uff0c\u5747\u503c\u4e0d\u80fd\u8d85\u8fc72.5\u4e2a<\/p>\n
\n\t\u3000\u30004\uff09\u957f\u77ed\u8d85\u51fa12inch\u7684\u949f\u8868\u7ebf\uff0c\u5047\u5982\u5de5\u4f5c\u9891\u7387\u8d85\u8fc720M\uff0c\u8fc7\u5b54\u773c\u4e0d\u80fd\u8d85\u8fc72\u4e2a\u3002<\/p>\n
\n\t\u3000\u30005\uff09\u5047\u5982\u949f\u8868\u7ebf\u6709\u5b54\uff0c\u5728\u901a\u5b54\u7684\u90bb\u8fd1\u90e8\u4f4d\uff0c\u5728\u7b2c\u4e8c\u5c42\uff08\u5730\u8d28\u6784\u9020\uff09\u548c\u7b2c\u4e09\u5c42\uff08\u7535\u6e90\u5c42\uff09\u4e2d\u95f4\u52a0\u4e00\u4e2a\u65c1\u8def\u7535\u5bb9\u3001\u5982\u4e0b\u56fe2.5-1\u6240\u663e\u793a\uff0c\u4ee5\u4fdd\u8bc1\u949f\u8868\u7ebf\u6362\u5c42\u540e\uff0c\u53c2\u7167\u5c42\uff08\u90bb\u8fd1\u5c42\uff09\u7684\u9ad8\u9891\u7387\u4ea4\u6d41\u7535\u7684\u63a7\u5236\u56de\u8def\u6301\u7eed\u3002\u65c1\u8def\u7535\u5bb9\u6240\u5c5e\u7684\u7535\u6e90\u5c42\u52a1\u5fc5\u662f\u8fc7\u5b54\u8d8a\u8fc7\u7684\u7535\u6e90\u5c42\uff0c\u5e76\u6700\u5927\u9650\u5ea6\u5730\u6328\u8fd1\u8fc7\u5b54\uff0c\u65c1\u8def\u7535\u5bb9\u4e0e\u901a\u5b54\u7684\u95f4\u9694\u8f83\u5927\u4e0d\u8d85\u8fc7300MIL\u3002<\/p>\n
\n\t\u3000\u30006\uff09\u5168\u90e8\u949f\u8868\u7ebf\u6b63\u5e38\u60c5\u51b5\u4e0b\u4e0d\u80fd\u7a7f\u5c9b\u3002\u4e0b\u8fb9\u5217\u51fa\u4e86\u7a7f\u5c9b\u7684\u56db\u79cd\u60c5\u51b5\u3002<\/p>\n
\n\t\u3000\u3000\u8de8\u5c9b\u53d1\u751f\u5728\u5f00\u5173\u7535\u6e90\u5c9b\u4e0e\u5f00\u5173\u7535\u6e90\u5c9b\u4e2d\u95f4\u3002\u8fd9\u65f6\u949f\u8868\u7ebf\u5728\u7b2c\u56db\u5c42\u7684\u53cd\u9762\u5e03\u7ebf\uff0c\u7b2c\u4e09\u5c42\uff08\u7535\u6e90\u5c42\uff09\u6709\u4e24\u4e2a\u5f00\u5173\u7535\u6e90\u5c9b\uff0c\u4e14\u7b2c\u56db\u5c42\u7684\u5e03\u7ebf\u52a1\u5fc5\u8d8a\u8fc7\u8fd9\u4e24\u4e2a\u5c9b\u3002<\/p>\n
\n\t\u3000\u3000\u8de8\u5c9b\u53d1\u751f\u5728\u5f00\u5173\u7535\u6e90\u5c9b\u4e0e\u5730\u5c9b\u4e2d\u95f4\u3002\u8fd9\u65f6\u949f\u8868\u7ebf\u5728\u7b2c\u56db\u5c42\u7684\u53cd\u9762\u5e03\u7ebf\uff0c\u7b2c\u4e09\u5c42\uff08\u7535\u6e90\u5c42\uff09\u7684\u4e00\u4e2a\u5f00\u5173\u7535\u6e90\u5c9b\u6b63\u4e2d\u95f4\u6709\u4e00\u5757\u5730\u5c9b\uff0c\u4e14\u7b2c\u56db\u5c42\u7684\u5e03\u7ebf\u52a1\u5fc5\u8d8a\u8fc7\u8fd9\u4e24\u4e2a\u5c9b\u3002<\/p>\n
\n\t\u3000\u3000\u8de8\u5c9b\u53d1\u751f\u5728\u5730\u5c9b\u4e0e\u5730\u8d28\u6784\u9020\u4e2d\u95f4\u3002\u8fd9\u65f6\u949f\u8868\u7ebf\u5728\u7b2c\u4e00\u5c42\u5e03\u7ebf\uff0c\u7b2c\u4e8c\u5c42\uff08\u5730\u8d28\u6784\u9020\uff09\u7684\u91cc\u9762\u6709\u4e00\u5757\u5730\u5c9b\uff0c\u4e14\u7b2c\u4e00\u5c42\u7684\u5e03\u7ebf\u52a1\u5fc5\u8d8a\u8fc7\u5730\u5c9b\uff0c\u7b49\u540c\u4e8e\u63a5\u5730\u7ebf\u88ab\u7ec8\u65ad\u3002<\/p>\n
\n\t\u3000\u3000\u949f\u8868\u7ebf\u4e0b\u8fb9\u6c92\u6709\u94fa\u94dc\u3002\u82e5\u6807\u51c6\u9650\u5b9a\u786e\u5b9e\u505a\u4e0d\u5230\u4e0d\u7a7f\u5c9b\uff0c\u786e\u4fdd\u5de5\u4f5c\u9891\u7387\u9ad8\u4e8e\u6216\u7b49\u4e8e66M\u7684\u949f\u8868\u7ebf\u4e0d\u7a7f\u5c9b\uff0c\u5de5\u4f5c\u9891\u7387\u4f4e\u4e8e66M\u7684\u949f\u8868\u7ebf\u82e5\u7a7f\u5c9b\uff0c\u52a1\u5fc5\u52a0\u4e00\u4e2a\u53bb\u8026\u7535\u5bb9\u4ea7\u751f\u955c\u50cf\u6587\u4ef6\u901a\u9053\u3002\u4ee5\u8c616.1\u4e3a\u4f8b\u5b50\uff0c\u57282\u4e2a\u5f00\u5173\u7535\u6e90\u5c9b\u4e2d\u95f4\u5e76\u6328\u8fd1\u8de8\u5c9b\u7684\u949f\u8868\u7ebf\uff0c\u7f6e\u653e\u4e00\u4e2a0.1UF\u7684\u7535\u5bb9\u5668\u3002<\/p>\n
\n\t\u3000\u3000\u5f53\u906d\u90472\u4e2a\u901a\u5b54\u548c\u4e00\u6b21\u7a7f\u5c9b\u7684\u9009\u62e9\u65f6\uff0c\u9009\u4e00\u6b21\u7a7f\u5c9b\u3002<\/p>\n
\n\t\u3000\u3000\u949f\u8868\u7ebf\u8981\u907f\u5f00I\/O\u4e00\u4fa7\u677f\u5916500MIL\u4ee5\u4e0a\uff0c\u800c\u4e14\u4e0d\u5fc5\u548cI\/O\u7ebf\u5e76\u8d70\u52a8\uff0c\u82e5\u786e\u5b9e\u505a\u4e0d\u5230\uff0c\u949f\u8868\u7ebf\u4e0eI\/O\u53e3\u7ebf\u95f4\u9694\u8981\u8d85\u8fc750MIL\u3002<\/p>\n
\n\t\u3000\u3000\u949f\u8868\u7ebf\u8d70\u5728\u7b2c\u56db\u5c42\u65f6\uff0c\u949f\u8868\u7ebf\u7684\u53c2\u7167\u5c42\uff08\u5f00\u5173\u7535\u6e90\u5e73\u9762\u56fe\uff09\u5e94\u5c3d\u53ef\u80fd\u4e3a\u949f\u8868\u914d\u7535\u7684\u90a3\u4e00\u4e2a\u5f00\u5173\u7535\u6e90\u8868\u9762\uff0c\u4ee5\u522b\u7684\u5f00\u5173\u7535\u6e90\u9762\u4e3a\u53c2\u7167\u7684\u949f\u8868\u8d8a\u4f4e\u5c31\u8d8a\u597d\uff0c\u6b64\u5916\uff0c\u5de5\u4f5c\u9891\u7387\u9ad8\u4e8e\u6216\u7b49\u4e8e66M\u7684\u949f\u8868\u7ebf\u53c2\u7167\u5f00\u5173\u7535\u6e90\u9762\u52a1\u5fc5\u4e3a3.3V\u5f00\u5173\u7535\u6e90\u5e73\u9762\u56fe\u3002<\/p>\n
\n\t\u3000\u3000\u949f\u8868\u7ebf\u6253\u7ebf\u65f6\u7ebf\u95f4\u9694\u8981\u8d85\u8fc725MIL\u3002<\/p>\n
\n\t\u3000\u3000\u949f\u8868\u7ebf\u6253\u7ebf\u65f6\u8fdb\u6765\u7684\u7ebf\u548c\u51fa\u6765\u7684\u7ebf\u5e94\u5f53\u5c3d\u53ef\u80fd\u8fdc\u3002\u5c3d\u91cf\u51cf\u5c11\u76f8\u8fd1\u56feA\u548c\u56feC\u8868\u8fbe\u7684\u6253\u7ebf\u65b9\u6cd5\uff0c\u82e5\u949f\u8868\u7ebf\u8981\u6362\u5c42\uff0c\u9632\u6b62\u9009\u7528\u56feE\u7684\u6253\u7ebf\u65b9\u6cd5\uff0c\u9009\u7528\u56feF\u7684\u6253\u7ebf\u65b9\u6cd5\u3002<\/p>\n
\n\t\u3000\u3000\u949f\u8868\u7ebf\u8054\u63a5BGA\u7b49\u914d\u4ef6\u65f6\uff0c\u82e5\u949f\u8868\u7ebf\u6362\u5c42\uff0c\u5c3d\u91cf\u51cf\u5c11\u9009\u7528\u56feG\u7684\u5e03\u7ebf\u65b9\u5f0f\uff0c\u8fc7\u5b54\u4e0d\u8981\u5728BGA\u4e0b\u8fb9\u8d70\uff0c\u6700\u597d\u662f\u9009\u7528\u56feH\u7684\u5e03\u7ebf\u65b9\u5f0f\u3002<\/p>\n
\n\t\u3000\u3000\u7559\u610f\u6bcf\u4e2a\u65f6\u949f\u4fe1\u53f7\uff0c\u4e0d\u5fc5\u5ffd\u89c6\u5176\u4ed6\u4e00\u4e2a\u949f\u8868\uff0c\u5305\u542bAUDIOCODEC\u7684AC_BITCLK\uff0c\u7279\u522b\u662f\u5728\u7559\u610f\u7684\u662fFS3-FS0\uff0c\u5c3d\u7ba1\u8bf4\u4ece\u540d\u5b57\u4e0a\u770b\u5e76\u4e0d\u662f\u949f\u8868\uff0c\u4f46\u4e8b\u5b9e\u4e0a\u8dd1\u7684\u662f\u949f\u8868\uff0c\u8981\u8fdb\u884c\u7559\u610f\u3002<\/p>\n
\n\t\u3000\u3000ClockChip\u4e0b\u62c9\u4e0b\u62c9\u7535\u963b\u5c3d\u53ef\u80fd\u6328\u8fd1ClockChip\u3002<\/p>\n
\n\t\u3000\u3000I\/O\u53e3\u7684\u89e3\u51b3<\/p>\n
\n\t\u3000\u3000\u5404I\/O\u53e3\u5305\u542bPS\/2\u3001USB\u3001LPT\u3001COM\u3001SPEAKOUT\u3001GAME\u5206\u4e3a\u4e00\u5757\u5730\uff0c\u6700\u5de6\u4e0e\u6700\u53f3\u4e0e\u6570\u636e\u5730\u76f8\u63a5\uff0c\u603b\u5bbd\u4e0d\u5c0f\u4e8e200MIL\u6216\u4e09\u4e2a\u8fc7\u5b54\uff0c\u522b\u7684\u5730\u533a\u4e0d\u5fc5\u4e0e\u6570\u636e\u5730\u76f8\u63a5\u3002<\/p>\n
\n\t\u3000\u3000\u82e5COM2\u53e3\u662f\u9488\u63d2\u5f0f\u7684\uff0c\u5c3d\u91cf\u6328\u8fd1I\/O\u5730\u3002<\/p>\n
\n\t\u3000\u3000I\/O\u7535\u6e90\u7535\u8defEMI\u5143\u5668\u4ef6\u5c3d\u53ef\u80fd\u6328\u8fd1I\/OSHIELD\u3002<\/p>\n
\n\t\u3000\u3000I\/O\u51fa\u53e3\u5904\u7535\u6e90\u5c42\u4e0e\u5730\u8d28\u6784\u9020\u72ec\u7acb\u5212\u5c9b\uff0c\u4e14Bottom\u548cTOP\u5c42\u90fd\u9700\u8981\u94fa\u88c5\uff0c\u4e0d\u80fd\u6570\u636e\u4fe1\u53f7\u7a7f\u5c9b\uff08\u7535\u6e90\u7ebf\u7acb\u5373\u62d6\u51faPORT\uff0c\u6ca1\u6709I\/OPORT\u4e2d\u957f\u8ddd\u79bb\u5e03\u7ebf\uff09\u3002<\/p>\n
\n\t\u3000\u3000\u51e0\u4e2a\u65b9\u9762\u8868\u660e<\/p>\n
\n\t\u3000\u3000A.\u5bf9EMI\u8bbe\u8ba1\u6807\u51c6\uff0c\u8bbe\u8ba1\u65b9\u6848\u6280\u672f\u5de5\u7a0b\u5e08\u8981\u4e25\u683c\u6267\u884c\uff0cEMI\u6280\u672f\u5de5\u7a0b\u5e08\u6709\u67e5\u9a8c\u7684\u6743\u5229\uff0c\u8fdd\u53cdEMI\u8bbe\u8ba1\u6807\u51c6\u800c\u5bfc\u81f4EMI\u68c0\u6d4bFAIL\uff0c\u4e49\u52a1\u7531\u8bbe\u8ba1\u65b9\u6848\u6280\u672f\u5de5\u7a0b\u5e08\u62c5\u8d1f\u3002<\/p>\n
\n\t\u3000\u3000B.EMI\u6280\u672f\u5de5\u7a0b\u5e08\u5bf9\u8bbe\u8ba1\u6807\u51c6\u627f\u62c5\uff0c\u5bf9\u4e25\u683c\u6267\u884cEMI\u8bbe\u8ba1\u6807\u51c6\uff0c\u4f46\u4f9d\u7136EMI\u68c0\u6d4bFAIL\uff0cEMI\u6280\u672f\u5de5\u7a0b\u5e08\u6709\u4e49\u52a1\u5f97\u51fa\u89e3\u51b3\u65b9\u6cd5\uff0c\u5e76\u6c47\u603b\u5230EMI\u8bbe\u8ba1\u6807\u51c6\u4e2d\u3002<\/p>\n
\n\t\u3000\u3000C.EMI\u6280\u672f\u5de5\u7a0b\u5e08\u5bf9\u6bcf\u4e00\u4e2a\u5916\u63a5\u8bbe\u5907\u53e3\u7684EMI\u68c0\u6d4b\u884c\u4e3a\u8d23\u4efb\uff0c\u4e0d\u80fd\u6f0f\u6d4b\u3002<\/p>\n
\n\t\u3000\u3000D.\u6bcf\u4e00\u4e2a\u8bbe\u8ba1\u65b9\u6848\u52a9\u7406\u5de5\u7a0b\u5e08\u6709\u5bf9\u8be5\u8bbe\u8ba1\u6807\u51c6\u4f5c\u6539\u52a8\u7684\u5efa\u8bae\u6743\u548c\u6000\u7591\u7684\u6743\u5229\u3002EMI\u6280\u672f\u5de5\u7a0b\u5e08\u6709\u4e49\u52a1\u56de\u5e94\u6000\u7591\uff0c\u5bf9\u6280\u672f\u5de5\u7a0b\u5e08\u7684\u63d0\u8bae\u6839\u636e\u8bd5\u9a8c\u540e\u786e\u8ba4\u540e\u6dfb\u52a0\u8bbe\u8ba1\u6807\u51c6\u3002<\/p>\n
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<\/p>\n
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