{"id":5148,"date":"2024-09-26T22:01:01","date_gmt":"2024-09-26T14:01:01","guid":{"rendered":""},"modified":"2024-09-26T22:01:01","modified_gmt":"2024-09-26T14:01:01","slug":"\u4ea7\u54c1\u7684\u6280\u672f\u6307\u6807\u5305\u62ec\u4ee5\u4e0b\u51e0\u7c7b_\u6280\u672f\u6307\u6807\u6709\u54ea\u4e9b","status":"publish","type":"post","link":"https:\/\/mushiming.com\/5148.html","title":{"rendered":"\u4ea7\u54c1\u7684\u6280\u672f\u6307\u6807\u5305\u62ec\u4ee5\u4e0b\u51e0\u7c7b_\u6280\u672f\u6307\u6807\u6709\u54ea\u4e9b"},"content":{"rendered":"
\u901a\u8fc7\u4e86\u89e3\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\uff08AWG\uff09\u7684\u5173\u952e\u6280\u672f\u6307\u6807\uff0c\u6709\u52a9\u4e8e\u8ba9\u60a8\u505a\u51fa\u660e\u667a\u7684\u91c7\u8d2d\u51b3\u7b56\u3002\u60a8\u9700\u8981\u77e5\u9053\u5982\u4f55\u5bf9\u5404\u7c7b AWG \u548c\u4e0d\u540c\u5382\u5546\u7684\u5b58\u50a8\u5668\u3001\u91c7\u6837\u7387\u3001\u52a8\u6001\u8303\u56f4\u548c\u5e26\u5bbd\u8fdb\u884c\u6bd4\u8f83\u3002\u672c\u6587\u5c06\u8981\u63a2\u8ba8 \u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\uff08AWG\uff09 \u7684\u6280\u672f\u6307\u6807\uff0c\u65e8\u5728\u5e2e\u52a9\u60a8\u66f4\u6df1\u5165\u7684\u7406\u89e3\u8fd9\u4e9b\u6307\u6807\u3002<\/p>\n
\u5b58\u50a8\u5668\u5927\u5c0f<\/b><\/p>\n
\u5b58\u50a8\u5668\u5927\u5c0f\u6307\u7684\u662f\u53ef\u7528\u4e8e\u5b58\u50a8\u957f\u4e32\u7528\u6237\u81ea\u5b9a\u4e49\u6ce2\u5f62\u7684\u5b58\u50a8\u5668\u5bb9\u91cf\u3002\u8be5\u6280\u672f\u6307\u6807\u7684\u5355\u4f4d\u4e3a\u5343\u5146\u6837\u70b9\uff08Gsa\uff09\u3002\u6570\u636e\u88ab\u9988\u5165\u6570\u6a21\u8f6c\u6362\u5668\uff08DAC\uff09\u4e2d\uff0c\u751f\u6210\u6240\u9700\u4fe1\u53f7\u7684\u7535\u538b\u9636\u8dc3\u8868\u793a\u3002\u4e3a\u4e86\u7cbe\u786e\u5730\u521b\u5efa\u5df2\u5b9a\u4e49\u7684\u4fe1\u53f7\uff0c\u5c31\u4f1a\u9700\u8981\u9ad8\u91c7\u6837\u7387\u548c\u5927\u5b58\u50a8\u5668\u3002<\/p>\n
\u91c7\u6837\u7387<\/b><\/p>\n
\u91c7\u6837\u7387\u662f DAC \u5728\u7ed9\u5b9a\u65f6\u95f4\u95f4\u9694\u5185\u53ef\u4ee5\u91c7\u6837\u7684\u6837\u70b9\u6570\u91cf\u3002\u8be5\u6280\u672f\u6307\u6807\u7684\u5355\u4f4d\u4e3a\u5343\u5146\u6837\u70b9\/\u79d2\uff08Gsa\/s\uff09\u3002\u91c7\u6837\u7387\u51b3\u5b9a\u4e86\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u8f93\u51fa\u4fe1\u53f7\u7684\u6700\u5927\u9891\u7387\u5206\u91cf\u3002\u91c7\u6837\u7387\u4e5f\u53ef\u4ee5\u7528\u5176\u4ed6\u672f\u8bed\u6765\u8868\u793a\uff0c\u5982\u201c\u65f6\u949f\u901f\u7387\u201d\u548c\u201c\u6837\u70b9\u8bbf\u95ee\u901f\u7387\u201d\u3002\u4e0b\u9762\u8fd9\u4e2a\u516c\u5f0f\u53ef\u4ee5\u7528\u6765\u7406\u89e3\u5b58\u50a8\u5668\u5927\u5c0f\u548c\u91c7\u6837\u7387\u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/p>\n
\n \u5b58\u50a8\u5668\/\u91c7\u6837\u7387 = \u64ad\u653e\u65f6\u95f4<\/b>\n <\/p><\/blockquote>\n
\u4ece\u4e0a\u5f0f\u53ef\u4ee5\u770b\u51fa\uff0c\u91c7\u6837\u7387\u8d8a\u9ad8\uff0c\u4f7f\u7528\u7684\u5185\u5b58\u5c31\u8d8a\u591a\uff0c\u64ad\u653e\u65f6\u95f4\u4e5f\u5c31\u8d8a\u77ed\u3002\u64ad\u653e\u65f6\u95f4\u51b3\u5b9a\u4e86 AWG \u53ef\u4ee5\u751f\u6210\u7684\u72ec\u7279\u6ce2\u5f62\u7684\u603b\u957f\u5ea6\u3002\u8fd9\u4e2a\u64ad\u653e\u65f6\u95f4\u957f\u5ea6\u4e5f\u79f0\u4e3a\u91cd\u590d\u524d\u7684\u6301\u7eed\u65f6\u95f4\u3002\u4f8b\u5982\uff0c\u5b58\u50a8\u5668\u5927\u5c0f\u4e3a 256 kSa\uff0c\u91c7\u6837\u7387\u4e3a 64 GSa\/s \u7684\u8bdd\uff0c\u64ad\u653e\u65f6\u95f4\u4e3a 4 \u5fae\u79d2\u3002\u8fd9\u4e2a\u7801\u578b\u4e0d\u662f\u5f88\u957f\uff0c\u8fd9\u4e5f\u662f\u5b83\u9700\u8981\u5927\u91cf\u5185\u5b58\u624d\u80fd\u83b7\u5f97\u66f4\u591a\u64ad\u653e\u65f6\u95f4\u7684\u539f\u56e0\u3002<\/p>\n
\u52a8\u6001\u8303\u56f4 \u2014 \u5782\u76f4\u5206\u8fa8\u7387\uff08ADC \u4f4d\u6570\uff09<\/b><\/p>\n
\u8fd9\u662f DAC \u7684\u8f93\u51fa\uff0c\u5b83\u8868\u793a\u4e3a\u7535\u538b\u4e0e\u5782\u76f4\u5206\u8fa8\u7387\u4f4d\u6570\u7684\u6bd4\u3002\u8be5\u503c\u7528\u76f8\u5bf9\u4e8e\u8f7d\u6ce2\u5e45\u5ea6\u7684\u5206\u8d1d\u6570\uff08dBc\uff09\u6765\u8868\u793a\u3002\u4f8b\u5982\uff0c8 \u4f4d DAC \u53ef\u4ee5\u8f93\u51fa 2 \u5230 8 \u4f4d\u7684\u5782\u76f4\u5206\u8fa8\u7387\uff0c\u6216\u4ea7\u751f\u6240\u9700\u6ce2\u5f62\u7684 256 \u4e2a\u4e0d\u540c\u7684\u7535\u538b\u7535\u5e73\u3002\u5728\u6bd4\u8f83\u4e0d\u540c\u54c1\u724c\u7684\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668 ADC \u4f4d\u6570\u6280\u672f\u6307\u6807\u65f6\uff0c\u6211\u4eec\u52a1\u5fc5\u8981\u4e86\u89e3\uff0cADC \u6bcf\u589e\u52a0\u4e00\u4f4d\uff0c\u5782\u76f4\u5206\u8fa8\u7387\u4f1a\u7ffb\u500d\u3002<\/p>\n
\u5e26\u5bbd<\/b><\/p>\n
\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u8f93\u51fa\u9650\u5b9a\u4e3a\u7279\u5b9a\u7684\u4e0a\u7aef\u8f93\u51fa\u9891\u7387\u3002\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u5e26\u5bbd\u662f\u5b83\u80fd\u591f\u53ef\u9760\u5730\u63d0\u4f9b\u7684\u9891\u7387\u8f93\u51fa\u8303\u56f4\u3002\u8be5\u503c\u4e5f\u79f0\u4e3a\u201c\u6570\u636e\u901f\u7387\u201d\uff0c\u4ee5\u5343\u5146\u4f4d\/\u79d2\uff08Gb\/s\uff09\u8868\u793a\u3002\u8bf7\u6ce8\u610f\uff0c\u5e26\u5bbd\u7531\u91c7\u6837\u7387\u51b3\u5b9a\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u4e0d\u662f\u4e00\u5bf9\u4e00\u7684\u5173\u7cfb\u3002\u6211\u4eec\u6765\u770b\u770b\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u8fd9\u79cd\u60c5\u51b5\u3002<\/p>\n
DAC \u5fc5\u987b\u5728\u5b58\u50a8\u5668\u4e2d\u51c6\u786e\u5730\u521b\u5efa\u4fe1\u53f7\uff0c\u5e76\u4e14\u5728\u6bcf\u4e2a\u5468\u671f\u9700\u8981\u4ea7\u751f\u81f3\u5c11\u4e24\u4e2a\u6570\u636e\u70b9\u3002\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u5948\u594e\u65af\u7279\u7406\u8bba\u3002\u56e0\u6b64\uff0c\u91c7\u6837\u7387\u4e3a 1 GHz \u7684\u8bdd\uff0cDAC \u7684\u8f93\u51fa\u4e3a 500 MHz\uff0c\u5373\u91c7\u6837\u7387\u7684\u4e00\u534a\u3002<\/p>\n
DAC \u8f93\u51fa\u4fe1\u53f7\u4e0d\u662f\u5e73\u6ed1\u7684\u6b63\u5f26\u6ce2\uff0c\u800c\u662f\u5b58\u50a8\u5668\u4e2d\u7528\u7535\u538b\u9636\u8dc3\u8868\u793a\u7684\u7801\u578b\u3002\u56e0\u6b64\uff0cDAC \u8f93\u51fa\u9700\u8981\u8fdb\u884c\u6ee4\u6ce2\u3002\u5728\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u5185\uff0c\u6ee4\u6ce2\u901a\u8fc7\u91cd\u5efa\u6ee4\u6ce2\u5668\u5b8c\u6210\uff0c\u8be5\u6ee4\u6ce2\u5668\u53ef\u4ea7\u751f\u5e73\u6ed1\u7684\u6b63\u5f26\u6ce2\u3002\u7136\u800c\uff0c\u91c7\u7528\u8fd9\u79cd\u7c7b\u578b\u7684\u6ee4\u6ce2\u6709\u4e00\u5b9a\u7684\u4ee3\u4ef7\uff0c\u91c7\u6837\u7387\u4e0e AWG \u8f93\u51fa\u9891\u7387\u7684\u6bd4\u503c\u8981\u989d\u5916\u635f\u5931 10%\u3002\u60a8\u53ef\u4ee5\u53c2\u8003\u4e0b\u9762\u7684\u516c\u5f0f\u3002\u4f8b\u5982\uff0c\u4e0a\u8ff0 1 GHz \u91c7\u6837\u7387\u4f1a\u4f7f\u5f97\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u6700\u5927\u8f93\u51fa\u9891\u7387\u8fbe\u5230 400 MHz\u3002 <\/p>\n
\n \u6700\u5927\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u8f93\u51fa\u9891\u7387 = \u91c7\u6837\u7387 x 40%<\/b>\n <\/p><\/blockquote>\n
\u65e0\u6742\u6563\u52a8\u6001\u8303\u56f4\uff08SFDR\uff09<\/b><\/p>\n
\u8be5\u503c\u5728\u9891\u57df\u4e2d\u6d4b\u91cf\uff0c\u662f\u4ece\u9009\u5b9a\u9891\u7387\u5230\u6240\u8ff0\u5e26\u5bbd\u5185\u6700\u9ad8\u53ef\u89c1\u6742\u6563\u6216\u8c10\u6ce2\u7684\u8ddd\u79bb\uff0c\u7528 dB \u8868\u793a\u3002\u8be5\u503c\u4ee5\u76f8\u5bf9\u4e8e\u9009\u5b9a\u9891\u7387\u5e45\u5ea6\u7684\u5206\u8d1d\u6570\u8868\u793a\u3002\u4e0b\u56fe 1 \u4e2d\u7684\u5c4f\u5e55\u622a\u56fe\u6240\u793a\u4e3a\u5c4f\u5e55\u4e2d\u5fc3\u7684 \u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\uff08AWG\uff09 \u8f93\u51fa\u9891\u7387\u7684\u793a\u4f8b\uff0c\u5de6\u4fa7\u7684\u6742\u6563\u6bd4\u632f\u5e45\u4f4e 94.54 dB\u3002<\/p>\n<\/p>\n
\n \n <\/div>\n \u56fe 1\uff1a\u76f8\u5bf9\u4e8e\u6742\u6563\u7684\u4e2d\u5fc3\u9891\u7387
\n <\/figcaption>\u6709\u6548\u4f4d\u6570\uff08ENOB\uff09<\/b><\/p>\n
\u6709\u6548\u4f4d\u6570\u6765\u81ea DAC \u4f4d\u6570\u3002\u7531\u4e8e\u8c10\u6ce2\u3001\u6742\u6563\u4fe1\u53f7\u548c \u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\uff08AWG\uff09 \u672c\u5e95\u566a\u58f0\u7684\u5f71\u54cd\uff0c\u6709\u6548\u4f4d\u6570\u5c0f\u4e8e DAC \u4f4d\u6570\u3002\u8bf7\u6ce8\u610f\uff0c\u8be5\u6280\u672f\u6307\u6807\u4f1a\u6539\u53d8 AWG \u7684\u5e26\u5bbd\uff0c\u60a8\u5e94\u5f53\u67e5\u770b\u5982\u4e0b\u56fe\u4e00\u6837\u7684 ENOB \u4e0e\u9891\u7387\u56fe\uff0c\u83b7\u5f97\u4e0e\u60a8\u9009\u62e9\u7684\u4fe1\u53f7\u8f93\u51fa\u9891\u7387\u76f8\u5173\u7684\u503c\u3002\u8bf7\u6ce8\u610f\uff0c\u4e0b\u56fe 2 \u4e2d\u7684\u56fe\u8868\u53c2\u8003\u4e86\u4e00\u4e2a 14 \u4f4d\u7cfb\u7edf\u3002\u4f46\u662f\uff0c\u60a8\u53ef\u4ee5\u770b\u5230\uff0c\u5728\u53d7\u5230\u4fe1\u566a\u6bd4\u5931\u771f\uff08SINAD\uff09\u7684\u5f71\u54cd\u4e4b\u540e\uff0c\u63a5\u6536\u673a\u5728 1.5 GHz \u7684\u5b9e\u9645\u5206\u8fa8\u7387\u4f4d\u6570\u964d\u4f4e\u5230\u4e86\u5927\u7ea6 9 \u4f4d\u3002<\/p>\n<\/p>\n
\n \n <\/div>\n \u56fe 2\uff1a\u9891\u7387\u4e0a\u7684 ENOB \u66f2\u7ebf
\n <\/figcaption>\u6709\u6548\u4f4d\u6570 ENOB \u662f\u4e00\u4e2a\u5f88\u597d\u7684\u6280\u672f\u6307\u6807\uff0c\u80fd\u591f\u5728\u8003\u8651\u5bf9\u4fe1\u53f7\u8d28\u91cf\u7684\u5f71\u54cd\u540e\u67e5\u770b AWG \u7684\u5b9e\u9645\u6027\u80fd\u3002\u6709\u6548\u4f4d\u6570 ENOB \u53ef\u4ee5\u6839\u636e\u4ee5\u4e0b\u516c\u5f0f\u6765\u6d4b\u91cf\u6216\u8ba1\u7b97\u3002\u8bf7\u6ce8\u610f\uff0cSINAD \u662f\u603b\u4fe1\u53f7\u529f\u7387\u4e0e\u610f\u5916\u4fe1\u53f7\u566a\u58f0\u4e4b\u95f4\u7684\u6bd4\u503c\u3002<\/p>\n<\/p>\n
\n \n <\/div>\n\u6ce2\u5f62\u6296\u52a8<\/b><\/p>\n
\u6ce2\u5f62\u7684\u6296\u52a8\u4f1a\u5bfc\u81f4\u8fb9\u6cbf\u548c\u7535\u538b\u7535\u5e73\u4e0d\u5bf9\u9f50\u3002\u8fd9\u6837\u53ef\u80fd\u4f1a\u5bfc\u81f4 AWG \u5c06\u6570\u636e\u8bef\u5dee\u6ce8\u5165\u60a8\u7684\u7cfb\u7edf\u3002\u6296\u52a8\u503c\u901a\u5e38\u4ee5\u540c\u6b65\u65f6\u949f\u548c\u76f4\u63a5\u6570\u636e\u8f93\u51fa\u4e4b\u95f4\u7684 ps \u5cf0\u5cf0\u503c\u8868\u793a\u3002<\/p>\n
\u662f\u5fb7\u79d1\u6280\u7684\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u4ea7\u54c1\u7ec4\u5408<\/h3>\n
\u4e86\u89e3\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668 AWG\u7684\u5173\u952e\u6280\u672f\u6307\u6807\u89c4\u683c\uff0c\u4e3a\u60a8\u7684\u5e94\u7528\u9009\u62e9\u5408\u9002\u7684\u53d1\u751f\u5668\uff1a<\/p>\n
\u2022 \u5b58\u50a8\u5668\u3001\u91c7\u6837\u7387\u548c\u64ad\u653e\u65f6\u95f4\u76f8\u4e92\u5173\u8054<\/p>\n
\u2022 \u5e26\u5bbd\u4e0e\u91c7\u6837\u7387\u4e0d\u4f1a\u5339\u914d\uff0c\u4f46\u5e94\u8be5\u662f\u91c7\u6837\u7387\u7684 60%<\/p>\n
\u2022 \u76f8\u6bd4 ADC \u4f4d\u6570\uff0cENOB \u53ef\u4ee5\u66f4\u597d\u5730\u8868\u793a\u5206\u8fa8\u7387<\/p>\n
\u2022 \u5c06\u6296\u52a8\u6280\u672f\u6307\u6807\u8003\u8651\u5728\u5185\uff0c\u4ee5\u786e\u4fdd\u771f\u5b9e\u7684\u4fe1\u53f7\u4fdd\u771f\u5ea6<\/p>\n
\u5982\u679c\u60a8\u6709\u5174\u8da3\u4e86\u89e3\u662f\u5fb7\u79d1\u6280\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u8bbf\u95ee\uff1a<\/p>\n
Arbitrary Waveform Generators\u200bwww.keysight.com <\/p>\n
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