{"id":29848,"date":"2026-05-21T10:53:49","date_gmt":"2026-05-21T02:53:49","guid":{"rendered":"https:\/\/www.elephant.com.hk\/?p=29848"},"modified":"2026-05-21T10:54:58","modified_gmt":"2026-05-21T02:54:58","slug":"izvor-dac%ef%bc%9a%e8%a8%ad%e8%a8%88%e5%b8%ab-darko-greguras%e5%bf%83%e8%a1%80%e7%b5%90%e6%99%b6%e7%9a%84%e5%a4%ab%e5%ad%90%e8%87%aa%e9%81%93","status":"publish","type":"post","link":"https:\/\/www.elephant.com.hk\/zh-hant\/blog\/2026\/05\/21\/izvor-dac%ef%bc%9a%e8%a8%ad%e8%a8%88%e5%b8%ab-darko-greguras%e5%bf%83%e8%a1%80%e7%b5%90%e6%99%b6%e7%9a%84%e5%a4%ab%e5%ad%90%e8%87%aa%e9%81%93\/","title":{"rendered":"Izvor DAC\uff1a
\u8a2d\u8a08\u5e2b Darko Greguras\u5fc3\u8840\u7d50\u6676\u7684\u592b\u5b50\u81ea\u9053"},"content":{"rendered":"

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\u9019\u9805\u8017\u6642 12 \u5e74\u7684\u8a08\u5283\u7531\u4e00\u80a1\u71b1\u60c5\u9a45\u52d5\uff1a\u56de\u6b78\u6839\u672c\uff0c\u5229\u7528\u7d93\u904e\u7cbe\u6311\u7d30\u9078\u3001\u5ee3\u70ba\u4eba\u77e5\u4e14\u7cbe\u7149\u7684\u7d44\u4ef6\uff0c\u5275\u9020\u51fa\u4e00\u6b3e\u548c\u8ae7\u3001\u5206\u7acb\u5f0f\uff08discrete\uff09\u7684\u591a\u4f4d\u5143\u6578\u4f4d\u985e\u6bd4\u8f49\u63db\u5668\u3002<\/p>\n

\u70ba\u4f55\u5982\u6b64\uff1f\u56e0\u70ba\u7576\u4f60\u904b\u7528\u4e00\u7d44\u7d93\u904e\u7cbe\u5bc6\u5e73\u8861\u7684\u96f6\u4ef6\u6642\uff0c\u6bcf\u4e00\u6b65\u9032\u5c55\u90fd\u80fd\u5728\u4e0d\u6539\u52d5\u57fa\u790e\u96fb\u8def\u7684\u60c5\u6cc1\u4e0b\uff0c\u5e36\u4f86\u66f4\u8c50\u6eff\u3001\u66f4\u5e73\u6ed1\u3001\u66f4\u8c50\u5bcc\u7684\u8868\u73fe\u3002\u6b63\u5982\u6a02\u5668\u7684\u88fd\u9020\u904e\u7a0b\uff0c\u5353\u8d8a\u97f3\u97ff\u8a2d\u8a08\u7684\u95dc\u9375\u5728\u65bc\u6240\u6709\u7d44\u4ef6\u7684\u548c\u8ae7\u8207\u4e92\u88dc\u7279\u6027\uff0cIzvor DAC \u4e5f\u4e0d\u4f8b\u5916\u3002<\/p>\n

\u4f46\u9019\u500b\u8a08\u5283\u4e26\u975e\u6beb\u7121\u6311\u6230\u3002\u6211\u60f3\u4f7f\u7528\u7684\u96fb\u963b\u8aa4\u5dee\u7387\u70ba 1%\uff0c\u82e5\u6309\u7167\u50b3\u7d71\u65b9\u5f0f\u4f7f\u7528\uff08\u5982\u5176\u4ed6\u88fd\u9020\u5546\u6240\u70ba\uff09\uff0c\u5c0d\u65bc\u5206\u7acb\u5206\u6bb5\u5f0f DAC \u800c\u8a00\uff0c\u9023 14 \u4f4d\u5143\u7684\u6027\u80fd\u90fd\u9054\u4e0d\u5230\u3002\u56e0\u6b64\uff0c\u6211\u5011\u5fc5\u9808\u6253\u7834\u5e38\u898f\uff0c\u5c0b\u627e\u5275\u65b0\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n

\u6280\u8853\u8a2d\u8a08\u76ee\u6a19\u662f\u4fdd\u6301\u5728 AD1865 DAC \u6676\u7247\u7684\u898f\u7bc4\u5167\uff0c\u4f46\u7121\u8ad6\u5728\u5ba2\u89c0\u6578\u64da\u9084\u662f\u4e3b\u89c0\u807d\u611f\u4e0a\uff0c\u5c24\u5176\u662f\u5728\u6975\u4f4e\u8a0a\u865f\u96fb\u5e73\u6642\uff0c\u90fd\u8981\u6709\u6240\u63d0\u5347\u3002\u9019\u6b3e\u5206\u7acb\u5f0f DAC \u570d\u7e5e\u5206\u6bb5\u5f0f\u7d50\u69cb\u8a2d\u8a08\uff1aMSB\uff08\u6700\u9ad8\u6709\u6548\u4f4d\u5143\uff09\u90e8\u5206\u70ba 3 \u4f4d\u5143\uff0cR2R \u90e8\u5206\u70ba 16 \u4f4d\u5143\u3002\u6211\u5011\u7279\u5225\u95dc\u6ce8\u4f4e\u65bc -60 dBFS \u7684\u8868\u73fe\uff0c\u90a3\u662f\u74b0\u5883\u6c1b\u570d\u3001\u9918\u97fb\u8870\u6e1b\u548c\u7d30\u5fae\u7d30\u7bc0\u6240\u5728\u4e4b\u8655\u3002\u5f97\u76ca\u65bc\u7279\u5b9a\u985e\u6bd4\u958b\u95dc\u7684\u9078\u64c7\u548c\u6975\u5176\u8b39\u614e\u7684\u914d\u5076\u8655\u7406\uff0cIzvor \u7684\u5efa\u7acb\u6642\u9593\uff08settling time\uff09\u5f9e\u672a\u6210\u70ba\u554f\u984c\u3002
\n\u5728\u97f3\u8cea\u65b9\u9762\uff0c\u76ee\u6a19\u662f\u5be6\u73fe\u66f4\u5f37\u7684\u5c0d\u6bd4\u5ea6\u8207\u63a7\u5236\u529b\u3001\u63d0\u5347\u771f\u5be6\u611f\u8207\u6642\u5e8f\u6027\uff0c\u540c\u6642\u4fdd\u6301\u975e\u5e38\u6c89\u7a69\u4e14\u83ef\u9e97\u7684\u8868\u73fe\u3002<\/p>\n

\u70ba\u4e86\u5be6\u73fe\u9019\u4e00\u76ee\u6a19\uff0c\u6211\u5011\u958b\u767c\u4e86\u5feb\u901f I2S \u5373\u6642\u88dc\u511f\u6280\u8853\uff0c\u4e26\u4f7f\u7528\u7cbe\u78ba\u5ea6\u9054 1-ppm \u7684\u53ef\u9760\u6e2c\u91cf\u8a2d\u5099\u3002\u4fee\u6b63\u5f8c\u7684\u6578\u503c\u88ab\u55ae\u7368\u5132\u5b58\u5728\u6bcf\u584a DAC \u677f\u4e0a\uff0c\u4f7f\u6bcf\u584a\u677f\u5be6\u969b\u4e0a\u90fd\u662f\u7368\u4e00\u7121\u4e8c\u7684\u3002\u9019\u8b93\u6211\u8ca0\u8cac\u7de8\u5beb\u7a0b\u5f0f\u78bc\u7684\u670b\u53cb\u517c\u540c\u4e8b Andrejs \u5fd9\u5f97\u4e0d\u53ef\u958b\u4ea4\u3002<\/p>\n

\u9019\u88e1\u6c92\u6709\u8d85\u53d6\u6a23\uff08oversampling\uff09\uff0c\u4e5f\u6c92\u6709\u6578\u4f4d\u6216\u985e\u6bd4\u6ffe\u6ce2\uff0c\u53ea\u6709\u4e00\u500b\u5faa\u74b0I2S \u7de9\u885d\u5668\u3002<\/p>\n

\u6211\u5011\u4f7f\u7528 8.5 \u4f4d\u5143\u5be6\u9a57\u5ba4\u7d1a\u5100\u5668\u6e2c\u8a66\u4e86\u76f4\u6d41\u96fb\u5e73\u7cbe\u78ba\u5ea6\u7684\u6bcf\u4e00\u8655\u7d30\u7bc0\u3002\u6700\u7d42\u7d50\u679c\u6bd4 AD1865 \u6e2c\u5f97\u7684\u52d5\u614b\u7bc4\u570d\u9ad8\u51fa 4 dB \u4ee5\u4e0a\uff1b\u800c\u5728\u4e3b\u89c0\u611f\u53d7\u4e0a\uff0c\u9019\u6b3e DAC \u586b\u6eff\u623f\u9593\u97f3\u5834\u7684\u65b9\u5f0f\u8207\u985e\u6bd4\u97f3\u6e90\u6975\u5176\u63a5\u8fd1\u3002<\/p>\n

\u82e5\u6c92\u6709 Andy Grove \u70ba\u9019\u6b3e DAC \u91cf\u8eab\u6253\u9020\u7684\u4e26\u806f\u7a69\u58d3\u96fb\u6e90\uff08shunt power supply\uff09\uff0c\u9019\u4e00\u5207\u90fd\u4e0d\u53ef\u80fd\u5be6\u73fe\u3002\u5b83\u662f\u6211\u5011\u5c08\u5229 Galahad \u524d\u994b\u96fb\u6e90(feed-forward)\u7684\u6676\u9ad4\u7248\uff0c\u5177\u6709\u6beb\u6b50\u59c6(milliohm)\u7d1a\u8f38\u51fa\u963b\u6297\uff0c\u901a\u904e\u7279\u5b9a MOSFET \u7684\u96fb\u6d41\u4e0d\u5c11\u65bc 450mA\uff0c\u5f9e\u800c\u7522\u751f\u6975\u4f4e\u7684\u8f38\u51fa\u963b\u6297\u3002<\/p>\n

\u751a\u81f3\u4ee5\u4e26\u806f MOSFET\u9006\u5411\u50b3\u5c0e\u7528\u5f37\u62b5\u92b7\u53bb\u5c01\u9589\u540c\u7d44\u5408\u56db\u8def\u4e4b\u524d\uff0c\u5e95\u566a\u5c31\u5df2\u8f15\u9b06\u9054\u5230\u512a\u96c5\u7684 -130 dB\u3002\u9078\u64c7\u8096\u7279\u57fa\u4e8c\u6975\u9ad4\uff08Schottky diodes\uff09\u548c\u9069\u4e2d\u7684\u96fb\u5bb9\u91cf\uff0c\u662f\u70ba\u4e86\u4fdd\u8b49\u8072\u97f3\u7684\u6d41\u52d5\u6027\u4e26\u6d88\u9664\u6a5f\u68b0\u6027\u7684\u751f\u786c\u611f\u3002<\/p>\n

\u6211\u5011\u9084\u8a55\u4f30\u4e86 Audio Note \u5e7e\u4e4e\u6240\u6709\u7684\u96fb\u963b\u7cfb\u5217\u3002\u96d6\u7136\u67d0\u4e9b\u93b3\u927b\u5408\u91d1\uff08Nichrome\uff09\u96fb\u963b\u5728\u56b4\u683c\u7684\u6280\u8853\u6307\u6a19\u4e0a\u5f88\u63a5\u8fd1\u8981\u6c42\uff0c\u4f46\u51b6\u91d1\u65b9\u9762\u4ecd\u9700\u9032\u4e00\u6b65\u7cbe\u7149\u3002\u6700\u7d42\uff0c\u6211\u5011\u70ba Level 5 Fifth Element Izvor \u958b\u767c\u4e86\u5ba2\u88fd\u5316\u7684\u5168\u9280\u93b3\u927b\u5408\u91d1\u7248\u672c\u3002\u5728\u97f3\u8cea\u4e0a\uff0c\u5b83\u5011\u4e0d\u53ea\u662f\u300c\u597d\u4e00\u9ede\u9ede\u300d\uff0c\u800c\u662f\u986f\u8457\u5730\u5e36\u4f86\u4e86\u66f4\u5e73\u6ed1\u3001\u66f4\u512a\u96c5\u7684\u8072\u97f3\u3002<\/p>\n

\u90a3\u9ebc\uff0c\u9019\u5341\u4e8c\u5e74\u7684\u958b\u767c\u503c\u5f97\u55ce\uff1f\u7d55\u5c0d\u503c\u5f97\u3002\u5728\u7814\u7a76\u4e86\u770b\u4f3c\u7121\u76e1\u7684\u6392\u5217\u7d44\u5408\u5f8c\uff0c\u6211\u500b\u4eba\u5c0d Izvor \u7684\u8868\u73fe\u611f\u5230\u7121\u6bd4\u6eff\u610f\u3002<\/p>\n

Darko Greguras<\/p>\n

Izvor \u6280\u8853\u5df2\u61c9\u7528\u65bc\u4ee5\u4e0b\u7522\u54c1\u7cfb\u5217\u7684\u6240\u6709\u578b\u865f\uff1a<\/strong>
\nDAC 4.1 Balanced\u3001DAC 5\u3001Fifth Element\u3002<\/p>\n

Audio Note (UK) Ltd
\n\u96fb\u8a71\uff1a01273 830 800
\n\u7db2\u5740\uff1aaudionote.co.uk
\nIG\uff1aaudionote_uk<\/p>\n

\u82e5\u60a8\u9700\u8981\u66f4\u591a\u8cc7\u8a0a\uff0c\u8acb\u806f\u7e6b\uff1a<\/p>\n

Eddy, \u937e\u79c9\u714c\u5148\u751f
\nhf-inquiry@elephant.com.hk<\/a>
\n+852 9303 3156<\/p>\n","protected":false},"excerpt":{"rendered":"

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