{"id":5569,"date":"2021-10-29T11:59:48","date_gmt":"2021-10-29T03:59:48","guid":{"rendered":"http:\/\/www.szryc.com\/?p=5569"},"modified":"2021-10-29T11:59:48","modified_gmt":"2021-10-29T03:59:48","slug":"adi%e7%83%ad%e7%94%b5%e5%81%b6%e6%b5%8b%e9%87%8f%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=5569","title":{"rendered":"ADI\u70ed\u7535\u5076\u6d4b\u91cf\u65b9\u6848"},"content":{"rendered":"

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1.\u70ed\u654f\u7535\u963b<\/u>\uff1a\u54cd\u5e94\u5feb\u3001\u5c01\u88c5\u5c0f\u3002\u4f46\u8981\u6c42\u7ebf\u6027\uff0c\u7cbe\u5ea6\u6709\u9650\uff0c\u5c24\u5176\u5728\u5bbd\u6e29\u5ea6\u8303\u56f4\u5185\u3002\u8981\u6c42\u6fc0\u52b1\u7535\u6d41\uff0c\u4f1a\u4ea7\u751f\u81ea\u53d1\u70ed\uff0c\u5f15\u8d77\u6f02\u79fb\u3002\u7ed3\u5408\u4fe1\u53f7\u8c03\u7406\u529f\u80fd\u540e\u7684\u6574\u4f53\u7cfb\u7edf\u7cbe\u5ea6\u5dee\uff0c\u53ea\u9002\u5408\u6d4b\u91cf\u7cbe\u5ea6\u4f4e\u3001\u4f4e\u6210\u672c\u7684\u5e94\u7528\u573a\u5408\u3002<\/p>\n

2.\u7535\u963b\u5f0f\u6e29\u5ea6\u6d4b\u91cf\u5668\uff08RTD\uff09\uff1aRTD\u76f8\u6bd4\u70ed\u654f\u7535\u963b\uff0c\u66f4\u4f73\u7cbe\u786e\u3001\u7a33\u5b9a\u4e14\u7279\u6027\u7ebf\u6027\uff0c\u4f46\u5c01\u88c5\u5c3a\u5bf8\u548c\u6210\u672c\uff0c\u76f8\u5bf9\u70ed\u654f\u7535\u963b\u9ad8\u3002\u56e0\u4e3a\u9700\u8981\u826f\u597d\u5339\u914d\u7684\u6fc0\u52b1\u6e90\u548c\u91c7\u6837\u7535\u8def<\/u>\uff0c\u6240\u4ee5\u8bbe\u8ba1\u76f8\u5bf9\u66f4\u590d\u6742\uff0c\u9700\u8981\u7684\u5916\u56f4\u5668\u4ef6\u66f4\u597d\u3002\u7528RTD\u4f5c\u4e3a\u51b7\u7aef\u8865\u507f\u7684\u70ed\u7535\u5076\u6d4b\u91cf\u7cfb\u7edf\uff0c\u901a\u5e38\u5bf9\u7cfb\u7edf\u7ea7\u7cbe\u5bc6\u5ea6\u8981\u6c42\u66f4\u9ad8\u3002<\/p>\n

3.\u96c6\u6210\u5f0f\u6e29\u5ea6\u4f20\u611f\u5668\uff1a\u96c6\u6210\u6e29\u5ea6\u4f20\u611f\u5668\u662f\u4e00\u79cd\u4ee5\u534a\u5bfc\u4f53\u5de5\u827a\u5236\u6210\u7684\u96c6\u6210\u5f0f\u6d4b\u6e29\u5143\u4ef6\u3002\u901a\u8fc7\u534a\u5bfc\u4f53\u5de5\u827a\u6280\u672f\uff0c\u5c06\u6d4b\u6e29\u7b49\u6a21\u62df\u5355\u5143\u83b7\u5f97\u7684\u4fe1\u606f\u6570\u5b57\u5316\u8f93\u51fa\uff0c\u9ad8\u96c6\u6210\u5ea6\uff0c\u53ef\u83b7\u5f97\u8fdc\u4f4e\u4e8e1\u00b0C\u7684\u7cfb\u7edf\u7ea7\u7cbe\u5ea6\u3002\u5916\u56f4\u7535\u8def\u8bbe\u8ba1\u7b80\u5355\uff0c\u53ef\u76f4\u63a5\u548cMCU<\/u>\u8fdb\u884c\u901a\u8baf\uff0c\u540c\u6837\u9488\u5bf9\u9ad8\u7cbe\u5ea6\u70ed\u7535\u5076\u91c7\u96c6\u7cfb\u7edf\u7684\u51b7\u7aef\u8865\u507f\u65b9\u6848\uff0c\u4f7f\u7528\u548c\u8bbe\u8ba1\u90fd\u6700\u4e3a\u7b80\u5355\u3002<\/p>\n

\u96c6\u6210\u5f0f\u6e29\u5ea6\u4f20\u611f\u5668AD<\/u>T7320<\/strong><\/p>\n

\u6280\u672f\u578b\u6388\u6743\u4ee3\u7406\u5546Excelpoint\u4e16\u5065\u7684\u5de5\u7a0b\u5e08David Liu\u4ecb\u7ecd\u4e86\u4e00\u6b3eADI<\/u>\u5178\u578b\u7684\u3001\u7528\u4e8e\u51b7\u7aef\u8865\u507f\u7684\u6e29\u5ea6\u4f20\u611f\u5668\u2014\u2014 ADT7320\u3002\u529f\u80fd\u6846\u56fe\u5982\u56fe3\uff1a<\/p>\n

\"poYBAGF6RziAD6N7AAFG7YbXpdk088\"<\/p>\n

\u56fe3<\/p>\n

ADT7320\u662f\u4e00\u6b3e\u9ad8\u7cbe\u5ea6\u6570\u5b57\u6e29\u5ea6\u4f20\u611f\u5668\uff0c\u4f7f\u752816\u4f4dADC<\/u>\u6765\u76d1\u6d4b\u548c\u6570\u5b57\u5316\u6e29\u5ea6\u53c2\u6570\uff0c\u5176\u5206\u8fa8\u7387\u4e3a0.0078\u00b0C\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cADC\u5206\u8fa8\u7387\u8bbe\u7f6e\u4e3a13Bit \uff080.0625\u00b0C\uff09\u3002\u5176\u539f\u7406\u662f\uff0c\u5185\u90e8\u6e29\u5ea6\u4f20\u611f\u5668\u4ea7\u751f\u4e0e\u7edd\u5bf9\u6e29\u5ea6\u6210\u6bd4\u4f8b\u7684\u7535\u538b\uff0c\u8fd9\u4e2a\u7535\u538b\u4e0e\u5185\u90e8\u7684\u53c2\u8003\u7535\u538b\u505a\u6bd4\u8f83\uff0c\u7136\u540e\u8f93\u5165\u5230\u7cbe\u5bc6\u6570\u5b57\u8c03\u5236\u5668\u4e2d\u3002<\/p>\n

\u5185\u90e8\u6e29\u5ea6\u4f20\u611f\u5668\u5728\u6574\u4e2a\u989d\u5b9a\u6e29\u5ea6\u8303\u56f4\u5185\u5177\u6709\u8f83\u9ad8\u7684\u7cbe\u5ea6\u548c\u7ebf\u6027\u5ea6\uff0c\u65e0\u9700\u7528\u6237\u8fdb\u884c\u6821\u6b63\u6216\u6821\u51c6\u3002<\/p>\n

\u53e6\u5916\uff0c\u5b83\u62e5\u6709\u8fc7\u6e29\u62a5\u8b66\u529f\u80fd\uff0c\u5bf9\u529f\u80fd\u5b89\u5168\u6027\u5e26\u6765\u4fdd\u969c\u3002\u5916\u8f93\u51fa\u7aef\u53e3\u3001INT\u548cCT\uff0c\u4f7f\u5176\u53ef\u4ee5\u5728\u8d85\u9ad8\u6e29\u6216\u4f4e\u6e29\u7684\u60c5\u51b5\u4e0b\uff0c\u901a\u8fc7\u4e00\u4e2a10K\u7684\u4e0a\u62c9\u7535\u963b\uff0c\u76f4\u63a5\u5411\u540e\u7aefMCU\u53d1\u51fa\u4e2d\u65ad\u4fe1\u53f7\u3002<\/p>\n

ADI\u53ef\u63d0\u4f9b\u7684\u70ed\u7535\u5076\u6d4b\u91cf\u4e4b\u6a21\u62df\u524d\u7aef<\/strong><\/p>\n

AD8494\/AD8495\/AD8496\/AD8497 \u70ed\u7535\u5076\u653e\u5927\u5668<\/u>\u4e3a\u70ed\u7535\u5076\u6e29\u5ea6\u6d4b\u91cf\u4fe1\u53f7\u8c03\u7406\u524d\u7aef\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u7684\u4f4e\u6210\u672c\u89e3\u51b3\u65b9\u6848\u3002\u9488\u5bf9\u70ed\u7535\u5076\u91c7\u6837\u7aef\uff0c\u5728\u73b0\u573a\u8bbe\u8ba1\u4e2d\u5f80\u5f80\u8fd8\u8981\u8003\u8651\u5176\u5171\u6a21\u5e72\u6270\u4fe1\u53f7\uff0c\u4ee5\u53caESD\u548c\u8fc7\u538b\u4fdd\u62a4\u7b49\u56e0\u7d20\u3002<\/p>\n

\"pYYBAGF6R0GAeJmLAAEE4neagSY545\"<\/p>\n

\u56fe4<\/p>\n

AD849x\u4e13\u4e3a\u6d4b\u91cf\u548c\u653e\u5927J\u578b\u548cK\u578b\u70ed\u7535\u5076\u4fe1\u53f7\u800c\u4f18\u5316\uff0c\u901a\u8fc7CMOS\u5de5\u827a\u4e0d\u4ec5\u5728\u5176\u524d\u7aef\u96c6\u6210\u4e86ESD\u548c\u8fc7\u538b\u4fdd\u62a4\u529f\u80fd\uff0c\u5176\u4f18\u5f02\u7684\u6297\u5171\u6a21\u80fd\u529b\u4f7f\u5176\u62e5\u67095mV\/\u00b0C\u7cfb\u7edf\u7ea7\u7ebf\u6027\u54cd\u5e94Vout=\uff08TMJ \u00d7 5 mV\/\u00b0C\uff09+VR<\/u>EF\uff0c\u5176\u4e2dTMJ\u8868\u793a\u70ed\u7535\u5076\u7684\u6d4b\u91cf\u7ed3\u6e29\u3002AD849x\u540c\u7cfb\u5dee\u5f02\u5316\u5bf9\u6bd4\u5982\u56fe5\uff1a<\/p>\n

\"poYBAGF6R0qAL2U0AAEwhmOKIHY889\"<\/p>\n

\u56fe5<\/p>\n

ADI\u53ef\u63d0\u4f9b\u7684\u70ed\u7535\u5076\u6d4b\u91cf\u4e4b\u96c6\u6210\u65b9\u6848\u7bc7<\/strong><\/p>\n

David Liu\u4ecb\u7ecd\uff0cADI\u53ef\u63d0\u4f9b\u591a\u6b3e\u70ed\u7535\u5076\u6d4b\u91cf\u96c6\u6210\u65b9\u6848\u3002<\/p>\n

AD7124<\/strong><\/p>\n

AD7124-4\/AD7124-8\u662f\u4e00\u6b3e\u4ee524bit ADC\u4e3a\u6838\u5fc3\uff0c\u5185\u90e8\u9ad8\u96c6\u6210MUX\u3001PGA\u3001REF\u7b49\uff0c\u9488\u5bf9\u70ed\u7535\u5076\u70ed\u7535\u963b\u6d4b\u91cf\u76f4\u63a5\u63a5\u5165\u578b\u7684\u5b8c\u6574\u89e3\u51b3\u65b9\u6848\u3002\u53ef\u5b9e\u73b0\u9ad8\u5206\u8fa8\u7387\u3001\u4f4e\u566a\u58f0\u6027\u80fd\u548c\u4f4e\u975e\u7ebf\u6027\u5ea6\u8bef\u5dee\u80fd\u529b\u3002<\/p>\n

\u7247\u5185\u4f4e\u566a\u58f0PGA\uff0c\u53ef\u901a\u8fc7\u8f6f\u4ef6\u7075\u6d3b\u8c03\u6574\u589e\u76ca\u7f16\u7a0b\u8303\u56f4\uff081\u30012\u30014\u30018\u300116\u300132\u300164\u3001128\uff09\uff0c\u6765\u8c03\u6574\u8f93\u5165\u4fe1\u53f7\u7684\u5e45\u5ea6\uff0c\u8fbe\u5230ADC\u7684\u6709\u6548\u91c7\u6837\u8303\u56f4\u3002\u589e\u76ca\u7ea7\u5177\u6709\u9ad8\u8f93\u5165\u963b\u6297<\/u>\uff0c\u8f93\u5165\u6f0f\u7535\u6d41\u5728\u5168\u529f\u7387\u6a21\u5f0f\u4e0b\u4e0d\u8d85\u8fc73.3 nA\uff0c\u5728\u4f4e\u529f\u8017\u6a21\u5f0f\u4e0b\u4e3a1 nA\uff08\u5178\u578b\u503c\uff09\u3002<\/p>\n

\u56fe6\u6240\u793a\u7535\u8def\u662f\u9488\u5bf9\u5178\u578b\u7684\u70ed\u7535\u5076\uff0c\u7528RTD\u4f5c\u51b7\u7aef\u8865\u507f\u7684\u53c2\u8003\u8bbe\u8ba1\u3002\u4f7f\u7528\u4e24\u4e2a\u6a21\u62df\u8f93\u5165\u5f15\u811a\u6765\u8fde\u63a5\u70ed\u7535\u5076\uff08AI<\/u>N2\u3001AIN3\uff09\uff0c\u4ee5\u53ca\u4e09\u7ebfRTD\u7535\u8def\uff08AIN1\u3001AIN6\u3001AIN7\uff09\u3002AIN2\u548cAIN3\u914d\u7f6e\u4e3a\u5168\u5dee\u5206\u8f93\u5165\u901a\u9053\uff0c\u7528\u4e8e\u6d4b\u91cf\u70ed\u7535\u5076\u4ea7\u751f\u7684\u7535\u538b\u3002\u5bf9\u4e8e\u672c\u7535\u8def\uff0c\u5982\u56fe6\u6240\u793a\uff0c\u70ed\u7535\u5076\u662f\u6d6e\u7a7a\u7684\u3002\u8981\u5c06\u70ed\u7535\u5076\u504f\u7f6e\u5230\u5df2\u77e5\u7535\u5e73\uff0cAIN2\u4e0a\u4f7f\u80fdVBIAS\u7535\u538b\u53d1\u751f\u5668\uff0c\u4f7f\u70ed\u7535\u5076\u504f\u7f6e\u5230\u4ee5\u4e0b\u503c\uff1a<\/p>\n

\"pYYBAGF6R1iAeZ0rAAAuan1hJFw626\"<\/div>\n

\u70ed\u7535\u5076\u6d4b\u91cf\u662f\u7edd\u5bf9\u6d4b\u91cf\uff0c\u56e0\u800c\u9700\u8981\u4e00\u4e2a\u57fa\u51c6\u7535\u538b\u6e90\uff0c\u4f7f\u7528AD7124-4\/AD7124-8\u5185\u7f6e2.5 V\u57fa\u51c6\u7535\u538b\u6e90\u3002<\/p>\n

\u9488\u5bf9\u51b7\u7ed3\u8865\u507f\uff0c\u4e00\u4e2a\u6fc0\u52b1\u7535\u6d41\u6e90\u7528\u4e8e\u6fc0\u52b1RTD\u3002\u6b64\u7535\u6d41\u4eceAVDD\u4ea7\u751f\uff0c\u6d41\u5411AIN1\u3002\u56fe6\u8be6\u7ec6\u663e\u793a\u4e86\u6a21\u62df\u5f15\u811a\u53ca\u5176\u914d\u7f6e\u3002<\/p>\n

\u5bf9\u4e8e\u672c\u7535\u8def\uff0c\u51b7\u7ed3\u7535\u8def\u91c7\u7528\u57fa\u51c6\u8f93\u5165REFIN1\uff08\u00b1\uff09\u3002\u6d41\u7ecf4\u7ebfRTD\uff08\u7528\u4e8e\u51b7\u7ed3\u6d4b\u91cf\uff09\u7684\u7535\u6d41\u4e5f\u4f1a\u6d41\u8fc7\u7cbe\u5bc6\u57fa\u51c6\u7535\u963b\uff0c\u4ea7\u751f\u57fa\u51c6\u7535\u538b\u3002 \u6b64\u7cbe\u5bc6\u57fa\u51c6\u7535\u963b\u4e0a\u4ea7\u751f\u7684\u7535\u538b\u4e0eRTD\u4e0a\u7684\u7535\u538b\u6210\u6bd4\u4f8b\uff0c\u56e0\u6b64\uff0c\u6fc0\u52b1\u7535\u6d41\u7684\u6ce2\u52a8\u4f1a\u88ab\u6d88\u9664\u3002\u7531\u4e8e\u57fa\u51c6\u7535\u538b\u7f13\u51b2\u5668\u5df2\u4f7f\u80fd\uff0c\u52a1\u5fc5\u6ee1\u8db3\u6b63\u5e38\u5de5\u4f5c\u6240\u9700\u7684\u88d5\u91cf\uff08AVDD \u2212 0.1 V\u548cAVSS + 0.1 V\uff09\u30020.125 V \uff08500 \u03bcA \u00d7 250 \u03a9\uff09\u7684\u88d5\u91cf\u7531250 \u03a9\u63a5\u5730\u7535\u963b\u63d0\u4f9b\uff0c\u5982\u56fe6\u6240\u793a\u3002<\/p>\n

\"pYYBAGF6R2WAV7myAAEJXUhEr5Q231\"<\/p>\n

\u56fe6<\/p>\n

LTC298X<\/strong><\/p>\n

LTC298X\u6d4b\u91cf\u5404\u79cd\u6e29\u5ea6\u4f20\u611f\u5668\u5e76\u6570\u5b57\u8f93\u51fa\u7ed3\u679c\uff08\u4ee5\u00b0C\u6216\u00b0F\u4e3a\u5355\u4f4d\uff09\uff0c\u5177\u67090.1\u00b0C\u7cbe\u5ea6\u548c 0.001\u00b0 C \u5206\u8fa8\u7387\u3002LTC298X\u53ef\u4ee5\u6d4b\u91cf\u51e0\u4e4e\u6240\u6709\u6807\u51c6\uff08B\u3001E\u3001J\u3001K\u3001N\u3001S\u3001R\u3001T \u578b\uff09\u6216\u81ea\u5b9a\u4e49\u70ed\u7535\u5076\u7684\u6e29\u5ea6\uff0c\u81ea\u52a8\u8865\u507f\u51b7\u7aef\u6e29\u5ea6\u5e76\u5b9e\u73b0\u7ed3\u679c\u7ebf\u6027\u5316\u3002\u8be5\u5668\u4ef6\u8fd8\u53ef\u4ee5\u4f7f\u7528\u6807\u51c6\u76842\u30013\u62164 \u7ebf\u5f0f RTD\u3001\u70ed\u654f\u7535\u963b\u548c\u4e8c\u6781\u7ba1<\/u>\u6765\u6d4b\u91cf\u6e29\u5ea6\u3002\u5b83\u5177\u670920\u4e2a\u53ef\u91cd\u65b0\u914d\u7f6e\u7684\u6a21\u62df\u8f93\u5165\uff0c\u652f\u6301\u8bb8\u591a\u4f20\u611f\u5668\u8fde\u63a5\u548c\u914d\u7f6e\u9009\u9879\u3002LTC298X\u5305\u62ec\u9002\u7528\u4e8e\u6bcf\u79cd\u6e29\u5ea6\u4f20\u611f\u5668\u7684\u6fc0\u52b1\u7535\u6d41\u6e90\u548c\u6545\u969c\u68c0\u6d4b\u7535\u8def\u3002<\/p>\n

LTC298X\u53ef\u76f4\u63a5\u4e0e\u63a5\u5730\u53c2\u8003\u4f20\u611f\u5668\u63a5\u53e3<\/u>\uff0c\u65e0\u9700\u7535\u5e73\u8f6c\u6362\u5668\u3001\u8d1f\u7535\u6e90\u7535\u538b\u6216\u5916\u90e8\u653e\u5927\u5668\u3002\u6240\u6709\u4fe1\u53f7\u901a\u8fc7\u7531\u5185\u90e8 10ppm\/\u00b0C\uff08\u6700\u5927\u503c\uff09\u57fa\u51c6\u7535\u538b\u6e90\u9a71\u52a8\u7684\u4e09\u4e2a\u9ad8\u7cbe\u5ea6\u300124\u4f4d \u0394\u03a3 ADC \u8fdb\u884c\u7f13\u51b2\u548c\u540c\u6b65\u6570\u5b57\u5316\u3002<\/p>\n

\"poYBAGF6R3mAGmlxAAPSaxthgco056\"<\/p>\n

\u56fe7<\/p>\n

AD7124 or LTC298X<\/strong><\/p>\n

\u7cbe\u5ea6\uff1aLTC298x\u5177\u6709 0.1\u00b0C \u7684\u51c6\u786e\u5ea6\uff0cAD7124\u5728\u6d4b\u91cf\u5728\u221250\u2103\u81f3+200\u2103\u7684\u6d4b\u91cf\u6e29\u5ea6\u8303\u56f4\u5185\u5177\u6709\u00b11\u2103\u7684\u6574\u4f53\u7cfb\u7edf\u7cbe\u5ea6\u3002<\/p>\n

\u901a\u9053\uff1a\u51b7\u7aef\u8865\u507f\u4ee54\u7ebfRTD\u4e3a\u4f8b\uff0cLTC298x\u53ef\u4ee5\u6d4b\u91cf15\u8def\u70ed\u7535\u5076\uff0cAD7124-4\u53ef\u4ee5\u6d4b\u91cf2\u8def\u70ed\u7535\u5076\uff0cAD7124-8\u53ef\u4ee5\u6d4b\u91cf6\u8def\u70ed\u7535\u5076\u3002<\/p>\n

\u76f8\u5bf9\u6210\u672c\u56e0\u7d20\uff1aLTC298X\u6bd4AD7124\u8f83\u9ad8\uff0c\u4f46\u5b83\u5728\u63d0\u4f9b\u66f4\u591a\u91c7\u6837\u8def\u6570\u7684\u540c\u65f6\uff0c\u51cf\u5c11\u4e86\u8bbe\u8ba1\u8005\u5bf9\u5176\u6821\u51c6\u7684\u76f8\u5173\u8981\u6c42\u3002\u800c\u76f8\u5bf9\u6210\u672c\u8f83\u4f4e\u7684AD7124-X\uff0c\u867d\u540c\u6837\u62e5\u6709\u8f83\u9ad8\u7684\u7cfb\u7edf\u7ea7\u91c7\u6837\u7cbe\u5ea6\uff0c\u4f46\u53ef\u6d4b\u91cf\u7684\u8def\u6570\u8f83\u5c11\uff0c\u5e76\u4e14\u9700\u8981\u8bbe\u8ba1\u8005\u5bf9\u7cfb\u7edf\u6821\u51c6\u82b1\u8d39\u4e00\u5b9a\u7684\u7cbe\u529b\u3002<\/p>\n

\u4fdd\u62a4\uff1aLTC298x\u7cfb\u5217\u4ea7\u54c1\u5e26\u70e7\u6bc1\uff0c\u77ed\u8def\u548c\u6545\u969c\u7684\u81ea\u52a8\u68c0\u6d4b\u529f\u80fd\u3002<\/p>\n

\u603b\u7ed3<\/strong><\/p>\n

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