{"id":3451,"date":"2025-12-04T14:59:00","date_gmt":"2025-12-04T14:59:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/decision-feedback-equalizer-dfe-technical-overview\/"},"modified":"2026-06-22T04:19:57","modified_gmt":"2026-06-22T04:19:57","slug":"decision-feedback-equalizer-dfe-technical-overview","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/decision-feedback-equalizer-dfe-technical-overview","title":{"rendered":"\uacb0\uc815 \ud53c\ub4dc\ubc31 \uc774\ud004\ub77c\uc774\uc800(DFE)\uc5d0 \ub300\ud55c \uc2ec\uce35 \ubd84\uc11d"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"608\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f00d9726b012413f88e62107d9c6e969-1024x608.webp\" alt=\"A Deep Dive into the Decision Feedback Equalizer (DFE)\" class=\"wp-image-3447\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f00d9726b012413f88e62107d9c6e969-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f00d9726b012413f88e62107d9c6e969-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f00d9726b012413f88e62107d9c6e969-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f00d9726b012413f88e62107d9c6e969-18x12.webp 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f00d9726b012413f88e62107d9c6e969.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uace0\uc18d \ub514\uc9c0\ud138 \ud1b5\uc2e0\u2014\ub370\uc774\ud130 \uc804\uc1a1 \uc18d\ub3c4\uac00 25 Gbps, 50 Gbps \ubc0f \uadf8 \uc774\uc0c1\uc73c\ub85c \uc99d\uac00\ud558\ub294 \ud658\uacbd\u2014\uc5d0\uc11c \uc804\uc1a1 \uc2e0\ud638\uc758 \ubb34\uacb0\uc131\uc740 \ubb3c\ub9ac\uc801 \ucc44\ub110(PCB \ubc30\uc120, \uad6c\ub9ac \ucf00\uc774\ube14)\uc5d0 \uc758\ud574 \uc9c0\uc18d\uc801\uc73c\ub85c \uc704\ud611\ubc1b\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ub3c4\uc804 \uacfc\uc81c\ub294 \uc8fc\ub85c \ub2e4\uc74c \ud615\ud0dc\ub85c \ub098\ud0c0\ub0a9\ub2c8\ub2e4. <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/intersymbol-interference-isi-in-digital-communication-explained\/\"><strong>\uc2ec\ubcfc \uac04 \uac04\uc12d(ISI)<\/strong><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ISI\ub294 \ud604\uc7ac \uc804\uc1a1 \uc911\uc778 \ub370\uc774\ud130 \uc2ec\ubcfc\uc758 \uc5d0\ub108\uc9c0\uac00 \u201c\ub118\uccd0\ud750\ub974\uba70\u201d \ud6c4\uc18d \uc2ec\ubcfc\uc758 \uc0d8\ud50c\ub9c1\uc744 \ubc29\ud574\ud560 \ub54c \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \uc774 \ud604\uc0c1\uc740 <strong>\uc544\uc774 \ub2e4\uc774\uc5b4\uadf8\ub7a8<\/strong> \uc758 \ub192\uc774\uc640 \ud3ed \ubaa8\ub450\ub97c \uc881\ud788\uba70, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/understanding-what-is-bit-error-rate\/\"><strong>\ube44\ud2b8 \uc624\ub958\uc728(BER)\uc758 \uc0c1\uc2b9\uc744 \ucd08\ub798\ud558\ub294 \uc8fc\uc694 \uc6d0\uc778\uc785\ub2c8\ub2e4.<\/strong><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud55c\ud3b8, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/continuous-time-linear-equalizer-ctle-in-optics-transceivers\/\">\uc5f0\uc18d\uc2dc\uac04 \uc120\ud615 \ub4f1\ud654\uae30(CTLE)<\/a> \ub294 \uc8fc\ud30c\uc218 \uc758\uc874\uc801 \uac10\uc1e0(\ucc44\ub110 \uc190\uc2e4) \ubcf4\uc0c1\uc5d0 \ub9e4\uc6b0 \ud6a8\uacfc\uc801\uc774\uc9c0\ub9cc, \uc7a1\uc74c \uc99d\ud3ed\uc744 \uc720\ubc1c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ucd5c\ub300 \uc131\ub2a5 \ub2ec\uc131\uacfc \uc794\uc5ec \uc7a5\ubbf8 \uaf2c\ub9ac \ud615\ud0dc\uc758 ISI \uc81c\uac70\ub97c \uc704\ud574 \ubcf4\ub2e4 \uc815\uad50\ud55c, <strong>\ube44\uc120\ud615<\/strong> \ud574\uacb0\ucc45\uc774 \ud544\uc694\ud569\ub2c8\ub2e4: \ubc14\ub85c <strong>\uacb0\uc815 \ud53c\ub4dc\ubc31 \ub4f1\ud654\uae30(DFE)\uc785\ub2c8\ub2e4.<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2b50 \uacb0\uc815 \ud53c\ub4dc\ubc31 \ub4f1\ud654\uae30(DFE)\ub780 \ubb34\uc5c7\uc778\uac00?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>\uacb0\uc815 \ud53c\ub4dc\ubc31 \ub4f1\ud654\uae30(DFE)\uc785\ub2c8\ub2e4.<\/strong> DFE\ub294 \uace0\uc18d \uc9c1\ub82c \ub9c1\ud06c \ubc0f \uad11 \ud2b8\ub79c\uc2a4\uc2dc\ubc84\uc5d0\uc11c <strong>\ud6c4\ud589 \ucee4\uc11c \uc2ec\ubcfc \uac04 \uac04\uc12d(post-cursor ISI)\uc744 \uc81c\uac70\ud558\uae30 \uc704\ud574 \uc0ac\uc6a9\ub418\ub294 \ub514\uc9c0\ud138 \ub610\ub294 \ud63c\ud569 \uc2e0\ud638 \ub4f1\ud654 \uae30\ubc95\uc785\ub2c8\ub2e4.<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CTLE\uc640 \uac19\uc740 \uc120\ud615 \ub4f1\ud654\uae30\ub4e4\uc740 \uc544\ub0a0\ub85c\uadf8 \uc601\uc5ed\uc5d0\uc11c \uc791\ub3d9\ud558\uc9c0\ub9cc, <strong>DFE\ub294 \uc2e0\ud638\uac00 \ub514\uc9c0\ud138 \uc2ec\ubcfc\ub85c \uc591\uc790\ud654\ub41c \ud6c4\uc5d0 \uc791\ub3d9\ud569\ub2c8\ub2e4.<\/strong>, \uc774\ub54c \uc774\uc804 \uc2ec\ubcfc\uc758 \ud310\uc815 \uacb0\uacfc\ub97c \ud65c\uc6a9\ud558\uc5ec, \uc774\uc804 \ube44\ud2b8\ub4e4\uc774 \uc774\ud6c4 \ube44\ud2b8\uc5d0 \ubbf8\uce58\ub294 \uac04\uc12d\uc73c\ub85c \uc778\ud55c \uc65c\uace1\uc744 \uc81c\uac70\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DFE\ub294 \ud604\ub300 SerDes \uc218\uc2e0\uae30\uc758 \ud575\uc2ec \ube14\ub85d\uc774 \ub418\uc5c8\uc73c\uba70, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">\uad11 \ubaa8\ub4c8<\/a> (SFP+, SFP28, QSFP28 \ubc0f 100G\/200G\/400G \ud2b8\ub79c\uc2a4\uc2dc\ubc84 \ud3ec\ud568)\uc5d0 \ub110\ub9ac \uc801\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2b50 \uc65c DFE\uac00 \ud544\uc694\ud55c\uac00? \u2014 \ud6c4\ud589 \ucee4\uc11c ISI \uc774\ud574\ud558\uae30<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b7 ISI\ub780 \ubb34\uc5c7\uc778\uac00?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/intersymbol-interference-isi-in-digital-communication-explained\/\">\uc2ec\ubcfc \uac04 \uac04\uc12d<\/a> \uc740 \uc81c\ud55c\ub41c \ucc44\ub110 \ub300\uc5ed\ud3ed, \ubc18\uc0ac \ub610\ub294 \ubd84\uc0b0\uc73c\ub85c \uc778\ud574 \ud558\ub098\uc758 \ube44\ud2b8 \ud30c\ud615 \uaf2c\ub9ac\uac00 \ub2e4\uc74c \ube44\ud2b8 \uad6c\uac04\uc73c\ub85c \uce68\ud22c\ud560 \ub54c \ubc1c\uc0dd\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b7 \ud6c4\ud589 \ucee4\uc11c ISI(DFE\uac00 \ud574\uacb0\ud558\ub294 \ud575\uc2ec \ubb38\uc81c)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ud6c4\ud589 \ucee4\uc11c ISI\ub294 <strong>\uc774\uc804 \ube44\ud2b8\ub4e4\uc774 \ud604\uc7ac \ube44\ud2b8\uc5d0 \uac04\uc12d\uc744 \uc77c\uc73c\ud0a4\ub294 \uac83<\/strong> \uc73c\ub85c \uc778\ud574 \uc218\uc2e0\uae30 \uc0d8\ud50c\ub9c1 \uc9c0\uc810\uc5d0\uc11c \ubc1c\uc0dd\ud558\ub294 \uc65c\uace1\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \uc65c\uace1\uc740 \ub2e4\uc74c\uacfc \uac19\uc740 \uc601\ud5a5\uc744 \uc90d\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\uc544\uc774 \ub2e4\uc774\uc5b4\uadf8\ub7a8 \ub192\uc774 \ucd95\uc18c<\/p><\/li>\n\n\n\n<li><p>\ud310\uc815 \uc784\uacc4\uac12 \uc774\ub3d9<\/p><\/li>\n\n\n\n<li><p>\ube44\ud2b8 \uc624\ub958\uc728(BER) \uc99d\uac00<\/p><\/li>\n\n\n\n<li><p>\uc544\ub0a0\ub85c\uadf8 \uc774\ud004\ub77c\uc774\uc800(\uc608: CTLE)\ub85c\ub294 \uc644\uc804\ud788 \ubcf4\uc815\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b7 \uace0\uc18d \ub9c1\ud06c\uc5d0 DFE\uac00 \ud544\uc694\ud55c \uc774\uc720<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub370\uc774\ud130 \uc18d\ub3c4\uac00 25G, 50G\ub85c \uc99d\uac00\ud568\uc5d0 \ub530\ub77c, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491583.htm\">100G PAM4<\/a> \ucc44\ub110 \uc9c0\uc5f0 \ubc0f \ub300\uc5ed\ud3ed \uc81c\ud55c\uc73c\ub85c \uc778\ud574 \ud6c4\ubbf8 \uaf2c\ub9ac ISI(post-cursor ISI)\uac00 \ud6e8\uc52c \ub354 \uc2ec\uac01\ud574\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DFE\ub294 \uc774 \ud2b9\uc815 \ud615\ud0dc\uc758 \uc65c\uace1\uc744 \uc0c1\uc1c4\ud558\ub294 \ub370 \uac00\uc7a5 \ud6a8\uacfc\uc801\uc778 \uae30\uc220\uc785\ub2c8\ub2e4. \uadf8 \uc774\uc720\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\uadf8\uac83\uc740 <strong>\ube44\uc120\ud615\uc801\uc785\ub2c8\ub2e4.<\/strong>, \ubc18\uba74 <a href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/continuous-time-linear-equalizer-ctle-in-optics-transceivers\/\" target=\"_blank\" rel=\"\">CTLE\ub294<\/a> \ub610\ub294 <a href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/ffe-feed-forward-equalizer-complete-guide\/\" target=\"_blank\" rel=\"\">FFE\uc640 \ub2ec\ub9ac<\/a><\/p><\/li>\n\n\n\n<li><p>\uc2e4\uc81c \uacb0\uc815(decision)\uc5d0 \uae30\ubc18\ud558\uc5ec \uc801\uc751\ud569\ub2c8\ub2e4.<\/p><\/li>\n\n\n\n<li><p>\uc7a1\uc74c \ub610\ub294 \uace0\uc8fc\ud30c \uc9c0\ud130\ub97c \uc99d\ud3ed\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ub530\ub77c\uc11c DFE\ub294 \ud604\ub300 \uace0\uc18d \uad11 \ubaa8\ub4c8 \uc218\uc2e0\uae30\uc5d0 \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u25b7 \uace0\uc18d \uad11 \ud2b8\ub79c\uc2a4\uc2dc\ubc84\uc5d0\uc11c\uc758 DFE<\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed6963f529014c96892618b1256227b3.webp\" alt=\" SFP+, SFP28, QSFP+, QSFP28, QSFP56 Optical modules\" class=\"wp-image-3448\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed6963f529014c96892618b1256227b3.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed6963f529014c96892618b1256227b3-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed6963f529014c96892618b1256227b3-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed6963f529014c96892618b1256227b3-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ed6963f529014c96892618b1256227b3-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uad11 \ubaa8\ub4c8(\uc608: <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\"><strong>SFP+<\/strong><\/a><strong>, <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28.htm\"><strong>SFP28<\/strong><\/a><strong>, <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26153-40g-qsfp.htm\"><strong>QSFP+<\/strong><\/a><strong>, <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491591.htm\"><strong>QSFP28<\/strong><\/a><strong>, <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473139.htm\"><strong>QSFP56<\/strong><\/a><strong>, \uc640 <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491583.htm\"><strong>100G-PAM4 \ubaa8\ub4c8)\uc740<\/strong><\/a> \uad11\uc12c\uc720 \ubd84\uc0b0, PCB \uc190\uc2e4, \ucee4\ub125\ud130 \ubc18\uc0ac \ub4f1 \uc870\uac74 \ud558\uc5d0\uc11c\ub3c4 \uc624\ub958 \uc5c6\uc774 \uc791\ub3d9\ud558\ub3c4\ub85d DSP \ub610\ub294 SerDes \uc218\uc2e0 \uccb4\uc778\uc5d0 DFE\ub97c \ud1b5\ud569\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DFE\ub294 \uad11-\uc804\uae30 \ubcc0\ud658 \ud6c4 \uc544\uc774 \uc624\ud504\ub2dd(eye opening)\uc744 \ubcf5\uc6d0\ud558\ub294 \ub370 \ub3c4\uc6c0\uc744 \uc8fc\uba70, IEEE 802.3 \uc804\uae30 \uc0ac\uc591 \ucda9\uc871\uc5d0 \ud575\uc2ec\uc801\uc778 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2b50 CTLE vs DFE \u2014 \ubcf4\uc644\uc801\uc778 \uc774\ud004\ub77c\uc774\uc81c\uc774\uc158 \uc5ed\ud560<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\uc65c CTLE\ub9cc\uc73c\ub85c\ub294 \ubd80\uc871\ud55c\uac00?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/continuous-time-linear-equalizer-ctle-in-optics-transceivers\/\">CTLE(\uc5f0\uc18d \uc2dc\uac04 \uc120\ud615 \ub4f1\ud654\uae30)<\/a>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\uc8fc\ud30c\uc218 \uc758\uc874\uc801 \uc190\uc2e4\uc744 <strong>\ubcf4\uc815\ud569\ub2c8\ub2e4.<\/strong><\/p><\/li>\n\n\n\n<li><p>\uace0\uc8fc\ud30c \uc131\ubd84\uc744 \uac15\ud654\ud569\ub2c8\ub2e4.<\/p><\/li>\n\n\n\n<li><p>\uc544\ub0a0\ub85c\uadf8 \ud504\ub860\ud2b8\uc5d4\ub4dc\uc5d0\uc11c \uc791\ub3d9\ud569\ub2c8\ub2e4.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uadf8\ub7ec\ub098 CTLE\ub294 \ube44\uc120\ud615 ISI\ub97c \uc0c1\uc1c4\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc65c DFE\uac00 CTLE\ub97c \uc644\ubcbd\ud558\uac8c \ubcf4\uc644\ud558\ub294\uac00?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DFE\ub294:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\ud6c4\ubbf8 \uaf2c\ub9ac ISI\ub97c \uc81c\uac70\ud569\ub2c8\ub2e4.<\/p><\/li>\n\n\n\n<li><p>\ub514\uc9c0\ud138 \ubcc0\ud658 \ud6c4\uc5d0 \uc791\ub3d9\ud569\ub2c8\ub2e4.<\/p><\/li>\n\n\n\n<li><p>\uc7a1\uc74c\uc744 \uc99d\ud3ed\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ub530\ub77c\uc11c <strong>CTLE + DFE\ub294<\/strong> \ud604\ub300 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/serdes-interfaces-high-speed-data-transfer-and-signal-integrity\/\">SerDes\uc5d0\uc11c \uac00\uc7a5 \ub110\ub9ac \uc0ac\uc6a9\ub418\ub294 \ud558\uc774\ube0c\ub9ac\ub4dc \uc774\ud004\ub77c\uc774\uc81c\uc774\uc158 \ubc29\uc2dd\uc785\ub2c8\ub2e4.<\/a> \ubc0f <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">\uad11 \ubaa8\ub4c8<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"756\" height=\"503\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/071837a7c54f47daac1b224781d307f0.png\" alt=\"DFE (Decision Feedback Equalizer)\" class=\"wp-image-3449\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/071837a7c54f47daac1b224781d307f0.png 756w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/071837a7c54f47daac1b224781d307f0-300x200.png 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/071837a7c54f47daac1b224781d307f0-18x12.png 18w\" sizes=\"(max-width: 756px) 100vw, 756px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u2b50 DFE\uc758 \uc7a5\uc810\uacfc \ud55c\uacc4<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u25cf \uc7a5\uc810<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\ud6c4\ubbf8 \uaf2c\ub9ac ISI \uc0c1\uc1c4\uc5d0 \ub9e4\uc6b0 \ud6a8\uacfc\uc801\uc785\ub2c8\ub2e4.<\/p><\/li>\n\n\n\n<li><p>\uc5f4 \uc7a1\uc74c \ub610\ub294 \ucc44\ub110 \uc7a1\uc74c\uc744 \uc99d\ud3ed\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p><\/li>\n\n\n\n<li><p>\ucc44\ub110 \ubcc0\ud654\uc5d0 \ub300\ud574 \uc801\uc751\uc801\uc774\uace0 \uac15\uc778\ud569\ub2c8\ub2e4.<\/p><\/li>\n\n\n\n<li><p>\uba40\ud2f0\uae30\uac00\ube44\ud2b8 \ub9c1\ud06c\uc5d0\uc11c BER\uc744 \uadf9\uc801\uc73c\ub85c \uac1c\uc120\ud569\ub2c8\ub2e4.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u25cf \ud55c\uacc4<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\uc120\ub450 \uaf2c\ub9ac ISI(pre-cursor ISI)\ub294 <strong>\ubcf4\uc815\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/strong> (FFE\/\uc1a1\uc2e0 \uc804\uac15\uc870\uac00 \ud544\uc694\ud568)<\/p><\/li>\n\n\n\n<li><p>\ud53c\ub4dc\ubc31 \ub8e8\ud504\ub85c \uc778\ud574 \ubcf5\uc7a1\uc131\uacfc \uc804\ub825 \uc18c\ubaa8\uac00 \uc99d\uac00\ud569\ub2c8\ub2e4.<\/p><\/li>\n\n\n\n<li><p>\uc815\ud655\ud558\uace0 \uc548\uc815\uc801\uc778 \uacb0\uc815\uc774 \ud544\uc694\ud558\uba70(\uc624\ub958 \uc804\ud30c \uc704\ud5d8\uc774 \uc788\uc74c)<\/p><\/li>\n\n\n\n<li><p>PAM4 \uc18d\ub3c4\uc5d0\uc11c\ub294 \uad6c\ud604\uc774 \ub354\uc6b1 \ubcf5\uc7a1\ud569\ub2c8\ub2e4.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u2b50 \uc0b0\uc5c5 \ud604\uc7a5\uc5d0\uc11c\uc758 DFE \uc2e4\uc6a9\uc801 \ud65c\uc6a9 \uc0ac\ub840<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\uc751\uc6a9 \ubd84\uc57c<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\ubc31\ud50c\ub808\uc778 \ub9c1\ud06c(25G\/56G\/112G SerDes)<\/p><\/li>\n\n\n\n<li><p>\uace0\uc18d \uc774\ub354\ub137(25GBASE-KR, 100GBASE-KR4)<\/p><\/li>\n\n\n\n<li><p>PCIe Gen4\/5\/6<\/p><\/li>\n\n\n\n<li><p>\uad11 \ubaa8\ub4c8 DSP(10G\u2013400G)<\/p><\/li>\n\n\n\n<li><p>CDR \/ \ub9ac\ud0c0\uc774\uba38 IC<\/p><\/li>\n\n\n\n<li><p>\uace0\ubc00\ub3c4 \uc2a4\uc704\uce58 \ubc0f \ub77c\uc6b0\ud130 \ud3ec\ud2b8<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\uc65c \uc774\uac83\uc774 \uc911\uc694\ud55c\uac00? <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">\uad11\ud559 \ubaa8\ub4c8<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DFE\ub294 \ub2e4\uc591\ud55c \ucc44\ub110 \uc870\uac74 \u2014 \uad11\uc12c\uc720 \uae38\uc774, \ucee4\ub125\ud130 \ubcc0\ud615, PCB \uae30\ud558 \uad6c\uc870 \u2014 \uc5d0 \uac78\uccd0 \uc5c4\uaca9\ud55c \uc2e0\ud638 \ubb34\uacb0\uc131 \ubc0f BER \uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud558\ub294 \ub370 \ub3c4\uc6c0\uc744 \uc8fc\uba70, 100G\/200G\/400G \uad11 \ud50c\ub7ab\ud3fc\uc5d0\uc11c \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u2b50 \uc694\uc57d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>\uacb0\uc815 \ud53c\ub4dc\ubc31 \ub4f1\ud654\uae30(DFE)\uc785\ub2c8\ub2e4.<\/strong> \ub294 \uace0\uc18d \ud1b5\uc2e0 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \ud6c4-\ucee4\uc11c ISI(\ud6c4\ud589 \uc2ec\ubcfc \uac04 \uac04\uc12d)\ub97c \uc81c\uac70\ud558\uae30 \uc704\ud574 \uc0ac\uc6a9\ub418\ub294 \ud575\uc2ec \ub514\uc9c0\ud138 \ub4f1\ud654 \uae30\uc220\ub85c\uc11c, \ub2e4\uc911 \uae30\uac00\ube44\ud2b8 \ub370\uc774\ud130 \uc18d\ub3c4\uc5d0\uc11c \uc2e0\ud638 \uc65c\uace1\uc758 \uc8fc\uc694 \uc6d0\uc778\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uacfc\uac70 \uc2ec\ubcfc \ud310\uc815\uc744 \ud65c\uc6a9\ud558\uc5ec \uac04\uc12d\uc744 \ub3d9\uc801\uc73c\ub85c \uc0c1\uc1c4\ud568\uc73c\ub85c\uc368 DFE\ub294 \ud2b9\ud788 <span class=\"math\">\uc640 \uacb0\ud569\ub420 \ub54c<\/span> \ub208 \uc5f4\ub9bc(eye opening) \ubc0f BER \uc131\ub2a5\uc744 \ud06c\uac8c \ud5a5\uc0c1\uc2dc\ud0b5\ub2c8\ub2e4. <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/continuous-time-linear-equalizer-ctle-in-optics-transceivers\/\">CTLE\ub294<\/a> \ub610\ub294 \uc1a1\uc2e0 \uce21 FFE\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ucd5c\uc2e0 \uad11 \ubaa8\ub4c8 \ubc0f SerDes \uc218\uc2e0\uae30\uc5d0\uc11c, <strong>CTLE\ub294 \uc120\ud615 \uc544\ub0a0\ub85c\uadf8 \uc190\uc2e4\uc744 \ucc98\ub9ac\ud558\uace0<\/strong>, \ubc18\uba74\uc5d0 <strong>DFE\ub294 \ube44\uc120\ud615 \ub514\uc9c0\ud138 ISI\ub97c \ubcf4\uc815\ud569\ub2c8\ub2e4.<\/strong>, \uc774\ub294 \uc0b0\uc5c5 \ud45c\uc900 \ud558\uc774\ube0c\ub9ac\ub4dc \ub4f1\ud654 \uc544\ud0a4\ud14d\ucc98\ub97c \ud615\uc131\ud569\ub2c8\ub2e4.<\/p>","protected":false},"excerpt":{"rendered":"<p>\uac04\uc12d(ISI)\uc744 \ucd5c\uc18c\ud654\ud558\ub294 \ub370 \ud544\uc218\uc801\uc778 \ube44\uc120\ud615 \uae30\ubc95\uc778 \uacb0\uc815 \ud53c\ub4dc\ubc31 \uc774\ud004\ub77c\uc774\uc800(DFE)\ub97c \uc54c\uc544\ubcf4\uc138\uc694. DFE\uac00 \uad11\ud559 \ud2b8\ub79c\uc2a4\uc2dc\ubc84 \ubc0f \uc7a5\uac70\ub9ac \ub370\uc774\ud130 \ub9c1\ud06c\uc5d0\uc11c \ube44\ud2b8 \uc624\ub958\uc728(BER)\uc744 \uac1c\uc120\ud558\ub294 \ubc29\uc2dd\uc744 \ud559\uc2b5\ud558\uc138\uc694.<\/p>","protected":false},"author":1,"featured_media":3450,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[26],"class_list":["post-3451","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/posts\/3451","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/comments?post=3451"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/posts\/3451\/revisions"}],"predecessor-version":[{"id":10798,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/posts\/3451\/revisions\/10798"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/media\/3450"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/media?parent=3451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/categories?post=3451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/tags?post=3451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}