AN-823 ᆌᆩԴऻ One Technology WaZtP.O. Box 9106t/Prwood, MA 02062-9106, U.S.A.t Tel: 781.329.4700tFax: 781.461.3113t www.analog.com ้ዓᆌᆩዐڦথຕጴೕ୲ࢇׯഗ एᇀথຕጴೕ୲ࢇׯഗ้ڦዓဣཥ้ڦक़۶ۯ ፕኁǖDavid Brandon ԨᆌᆩԴऻถକ๑ᆩएᇀথຕጴೕ୲ࢇׯഗ(DDS)ڦ ้ዓဣཥᅜइ้ڦڥक़۶ۯႠీLjժຫକೕ୲ࡀࣄĂ ࢅ୲ࠀዘࠓ୳հܔᇀ߀ဣཥ۶ۯႠీਏᆶڦዘᄲፕ ᆩă ᅎྺ0.022܈ăܔᇀ้ዓۉୟLj၎࿋ۙၿݴՐ୲၎ړᇀჽ ۙኝݴՐ୲ăُྔLjएᇀDDS้ڦዓဣཥ࣏ᅜ༵ࠃ ֘ڦା၎࿋ሯำႠీă ๑ᆩDDSׂิگ۶้ۯዓ႑ࡽڦዷᄲLjሞᇀইگDDS ႑ࡽዐ٪ሞڦොሗොݴׯᆅഐڦඓۨႠ้क़۶ ۯă ๑ᆩDDSׂิ้ዓ႑ࡽڦፌዷᄲᆫሞᇀഄटڦೕ୲ ۙၿݴՐ୲ăADIࠅິՔጚDDSׂᅜइۙڦڥၿݴՐ ୲ྺ28࿋Ă32࿋ई48࿋ăܔᇀ400 MHzဣཥ้ዓLj48࿋ۙ ၿጴᅜ๑ۙၿݴՐ୲ࢍྲڟٳጦăଷྔLjDDSڦೕ୲ ᅜٗDCۙၿഄాևဣཥ้ዓ୲ڦᅃӷ)ፌٷኵ*ăփ ࡗLjሞํा֡ፕዐLjೕ୲ฉ၌ཚሀྺፌٷኵڦ45%Ljᅜ ᆌྔև୳հᄲ൱ă၎࿋ۙၿݴՐ୲ཚྺ25࿋Lj၎࿋ೋ FCLOCK (fc) ྺၘဦ׃ຎኄᅃۅLjႴᄲକDDSׂิݛհ้ዓ႑ࡽࡗڦ ײă1ቛ๖ࡗײዐᅃڦۅၙ้ᇘࢅೕᇘ၄ႚ ๕Ljᅜतํाڦೕᇘ၄ႚ๕)ፌူ*ݛă FILTER OUT DAC OUT LIMITER RECONSTRUCTION FILTER DDS CLOCK OUT 0 IDEAL TIME DOMAIN RESPONSE t t t IDEAL FREQUENCY DOMAIN RESPONSE f fc f 2fc 1 f 1 3 5 7 "REAL WORLD" FREQUENCY RESPONSE f fc 2fc f f 1 1. DDSׂิ้ዓ႑ࡽײࡗڦ Rev. 0 | Page 1 of 8 3 5 7 05758-001 ODD HARMONIC SERIES AN-823 ස๖LjDDSڦၙ้ᇘ֑ྺᄣኟ၀հă֑ᄣኟ၀ հڦၙೕᇘ၄ႚ๕ᆯएհ႑ࡽतഄၟፇׯăྺॽ֑ ᄣኟ၀հገ࣑ྺ้ዓ႑ࡽLjՂႷݴଇօتăڼᅃօܔ ႑ࡽႜ୳հLjཚگཚ୳հLjᅜၩ֑أᄣࡗײዐׂิ ڦၟăኄ߲ࡗײփྜඇၙLjڍዘࠓ୳հഗᅃӯ ॽ႑ࡽገ࣑ྺكኟ၀հLjස๖ăگཚ୳հഗڦገ ችೕ୲ཚยዃྺဣཥ้ዓڦ40%45%ፑᆸLjᅜՍ૧ᆩ ඇևۙၿټLjཞ้ᄺీ؊ݴປ३ၟăܾڼօዺ၌ ޗഗLjॽঢ়ࡗ୳հڦኟ၀հገ࣑ྺݛհă၌ޗഗڦ܋ ૌຼᇀᅃ߲ԲডഗLjሞհႚੵࡗពኵۉუڦඓ้ ਗ਼Ljॽഄൎ࣑ྺႴڦஇडߛईஇडگጒༀăྺ३ၭ ሯำ᳘ࢇLjDAC܋ᇑ၌ޗഗ܋ኮक़ፌࡻᆶᅃ߲ມ ၍๕ೝ࢚থă ස1๖Lj࿄୳հڦDDSํڦाೕࡤሗොׯ ݴLjࡤᆶDAC၎࠲ၿհ฿ኈᅜतएհೕ୲ڦၟăएհೕ ୲ڦၿհᇸᇀDACࡧڿدຕݥڦ၍Ⴀă एհೕ୲ڦၟ࿋ᇀዘࠓ୳հഗڦপኹೕ୲ኮฉăܸLj एհೕ୲ڦၿհᄺࣷሞၟዐም၄ăકቛڼڟᅃలઊຯ༬ ೕ୲൶)DC½ fc*ዐڦၟ၂๖ྺၿհ۠ंڦႚ๕ăᅺُLj ኄၵၟీ၄ሞ୳հഗཚټᅜాăDACၿհڦኄၵټ ాၟLjᅜत୳հഗ࿄؊ݴປ३ྔټڦၟLjࠓׯ၌ޗഗ ܋ฉڦ۶ڦۯዘᄲઠᇸăሞհႚੵࡗ၌ޗഗពኵۉუ ้ڦक़क़߰ాLjሗොࣷݴׯᆅഐደዜۙڦLjܸٗሞ၌ ޗഗิׂ܋۶ۯăኄᅃࡗײׂิڦ۶ۯຌᇀඓۨႠ ۶ۯLjᇑ႑ࡽڦሗොڦݴׯ༬ۨೕ୲၎࠲ăሗොݴׯཚ ࡗ၌ీࠀޗገ࣑ྺ၎࿋ई้Ⴞဃֶ)۶ྺײࡗڦ*ۯBNई QNገ࣑ăසࡕ३ၭ୳հഗ)ټڦ૧ᆩਏᆶگপኹೕ୲ڦ گཚ୳հഗई૧ᆩټཚ୳հഗ*LjሗොሯำଉॽࣷইگLj ܸ३ၭׂิ้ڦक़۶܈ޗڦۯă! ้क़۶܈ޗڦۯᇑሗො)܈ޗڦݴׯ၎ܔᇀएհڦუӦ୲ܸ ჾ*ׯԲ૩ăEETྺኟ၀հLjᅺُഄუӦ୲ᇑ႑ࡽೕ୲ ࢅׯ܈ޗԲ૩ăEBDᇑ၌ޗഗኮक़ڦሯำ᳘ࢇLj Ԉઔઠጲ၌ޗഗԨวڦഗॲሯำLjᄺࣷᆅഐ۶ۯăᅃӯܸ ჾLj၌ޗഗڦ܋უӦ୲ሁߛLjܔ᳘ࢇሯำᆅഐڦ۶ۯ ሁփ௺ߌăუӦ୲ᇑೕ୲ࢅׯ܈ޗԲ૩Ljᅺُ༵ߛඪᅃ֖ ຕ߀۶ۯႠీă! ྺ๑एᇀEET้ڦዓဣཥڦ۶ۯፌၭLj࠲॰ሞᇀॽEBD უӦ୲༵ߛڟፌٷLjժܔEETሗොํݴׯႜᆶၳ୳ڦ հăူ௬ڦᅃဣଚํᄓຕݒᆙକኄၵᄲۅă Rev. 0 | Page 2 of 8 AN-823 2ዐۉڦୟᅃ߲एᇀDDS้ڦዓ݀ิഗLjᆯᅃ߲DDS तࢫዃڦዘࠓ୳հഗࢅAD9515้ዓݴದഗॲፇׯLjᆩઠྺ ఇຕገ࣑ഗ(ADC)༵ࠃ֑ᄣ้ዓăDDSဣཥ้ዓᆯRohde & Schwarz SMA႑ࡽ݀ิഗׂิăስଇ߲փཞDDSႜ֪ ǖAD9958ࢅAD9858ă֪ଉ۶้ۯLj๑ᆩDDSࢅAD9515 ྺADC༵ࠃ้ዓLjADCܔᅃ߲߅৫ڦ170 MSPSኟ၀հႜ ֑ᄣă֪ᆩڦADCྺ14࿋Ă100 MSPSഗॲAD6645ăཚ ࡗೠࠚADCݥݴྲڦ၍Ⴀࢅඤሯำڦڥ֪ܔSNR)႑ሯԲ* ࠋڦ၅LjࢫᆌᆩएᇀDDS้ڦዓժ֪ଉSNRLjՍ૧ᆩ ူ๕໙एᇀDDS้ڦዓሺेڦ۶ۯă ഄዐǖ SNRྺADCߛڦೕSNRă Nྺገ࣑ഗڦ࿋ຕă εྺገ࣑ഗڦೝྲݥݴ၍Ⴀ(DNL)ेฉඤሯำă fIFྺADCڦዐೕ(IF)ఇెೕ୲ă ᆶ࠲ُࠅ๕तසࢆᆩᇀೠࠚADC֑ᄣ้ዓ۶ۯ༬Ⴀܠ߸ڦ ႑တLj൩֖ADIᆌᆩԴऻAN-501ă AD6645 WENZEL AIN = 170.3 MHz AD9958, AD9858 ENCODE LPF/BPF AD9515 PECL ROHDE AND SCHWARZ SMA GENERATOR 500MHz AND 1GHz @ = 6 dBm 2. एᇀDDS้ڦዓ݀ิഗࢅ۶֪ۯଉۉୟ Rev. 0 | Page 3 of 8 05758-002 DDS AN-823 ࠲ᇀ֪ࢅࡕڦ༪ஃ ்๑ᆩ2๖ದዃႜକᅃဣଚ۶֪ۯଉLjᅜՍଉࣅ ୳հࢅೕ୲ࡀࣄڦᆖၚă ்इڥକኍܔෙዖೕ୲ڦ۶ۯຕăܔᇀዖೕ୲Lj ்ᆩෙዖփཞ୳ڦհഗದዃઠ֪უӦ୲)ೕ୲*ࢅټ၌ ڦڥ֪ܔ۶ڦۯᆖၚăཞ้၂๖କዖยዃڦ୲ࠀ ೝLjᅜՍ॔੦ዖ֪ཉॲူ၌ޗഗڦ܋უӦ୲ă Ք୳հഗټยዃྺ֑ᄣ୲ڦሀ40%LjኄټDDS ᆌᆩዐยዃገችೕ୲ڦᅃӯࡀሶăܔᇀփႴᄲྷݔټ ڦᆌᆩLjᅜॽ୳հഗټยዃྺగᅃኵLj๑ڥገችೕ୲ ടࡻߛᇀႴڦፌߛೕ୲ăኄᄣፔڦᅪᅜۙၿ پྺټॏઠ߀۶ۯႠీăፌࢫLj 2ڦ۶֪ۯଉದዃ ๑ᆩᅃ߲5%ټཚ୳հഗăኄᄣᅜ୳ٷأևټݴሯำࢅ ሗොݴׯLjܸٗइڥፌॅ۶ۯႠీLjڍඍۅࣷဎึٷև ۙݴၿټăሞೕ୲ԍ้ڦ࢛ۨዓᆌᆩዐLjኄᅃඍۅ ࠲ᄲă ईუӦ୲ᅜत३ၭ୳հཚټLjᅜ߀۶ۯႠీă ړྺ38.88 MHzĂ֑ᆩگᇀలઊຯ༬ೕ୲گڦཚ୳հ ഗ้Lj۶ۯፌٷLjሀྺ4 ps)*ߵݛǗړྺ155 MHzĂ ֑ᆩ5%୳հഗ้Lj۶ۯፌၭLjሀྺ700 fsăዖ൧ူLj AD9515ీۼໜጣഄೕ୲ڦԠইܸԍ႑ࡽڦ۶ۯႠ ీăኄAD9515तૌຼׂ)֖९4*ڦዘᄲ༬ႠLjኟ ኄዖ༬ႠᇑDDSڦፇࢇLj֍ํ၄କፌگ19 MHzೕ୲ڦೄ ௱(ps)ᅜူ۶ۯႠీă൩ጀᅪLjසࡕDDSথሞ19 MHzူ ൻݛۯհഗॲLjሶമຎუӦ୲ၳᆌॽ๑ڥฉຎࡕవᅜํ ၄ă ྺᅃօඓණ۶ۯᇑუӦ୲၎࠲Lj்֑ᆩAD9858 DDSइ ڥକ߸ܠຕ)2*ăഗॲీࠕၠ50 Ωሜ༵ࠃ40 mA ୁۉLjߛ߸୲ࠀLj၎࠲ڦუӦ୲߸ٷă AD9958ࢅAD9959ྺܠཚڢDDSഗॲLjഄᅜ၎ेLj ᅜ༵ߛ୲ࠀă 1ଚକAD9958֪ڦຕăኄၵຕኤǖ༵ߛೕ୲ 1ǖAD9958ࢅAD9515ڦ۶ۯၚᆌᇑೕ୲Ăࠀ୲Ăೕ୲Ă୳հഗ࠲ڦټဣ ׂ! AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 AD9958/AD9515 DDS ֑ᄣ୲ (MHz) 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 DDS ೕ୲ (MHz) 38.88 38.88 38.88 38.88 38.88 38.88 77.76 77.76 77.76 77.76 77.76 77.76 155.52 155.52 155.52 155.52 DDS ୲ࠀ (dBm) −3.6 −3.6 −4.7 −4.7 −3.3 −3.3 −3.8 −3.8 −4.9 −4.9 −3.8 −3.8 −5.5 −5.5 −5.6 −5.6 DDS ዘࠓ୳հഗ (MHz) 200 LPF 200 LPF 47 LPF 47 LPF 5% BPF 5% BPF 200 LPF 200 LPF 85 LPF 85 LPF 5% BPF 5% BPF 200 LPF 200 LPF 5% BPF 5% BPF Rev. 0 | Page 4 of 8 AD9515 ݴೕഗ ยዃ 1 2 1 2 1 2 1 2, 4 1 2, 4 1 2, 4 2 4, 8 2 4, 8 AD9515 ೕ୲ (MHz) 38.88 19.44 38.88 19.44 38.88 19.44 77.76 38.88, 19.44 77.76 38.88, 19.44 77.76 38.88, 19.44 77.76 38.88, 19.44 77.76 38.88, 19.44 ߵݛ ۶ۯ (ps) 4.1 4.1 2.4 2.4 1.5 1.5 2.5 2.5 1.5 1.5 1.1 1.1 1.5 1.5 0.68 0.68 AN-823 2၂๖କAD9858ᇑ5%ټཚ୳հഗĂ225 MHzگཚ୳հഗ ሞ߳ዖDDS୲ࠀೝ้֪ڦଉࡕăᇑᇨڦ൧ᅃ ዂLj༵ߛࠀ୲ࢅইټگᅜ߀۶ۯႠీă૧ᆩ5%ټཚ ୳հഗLjປ३DACٷڦևݴሗොăኄዖ൧ူLj۶ۯሞ ߸܈ײٷฉൽਦᇀDACᇑ၌ޗഗኮक़ڦሯำ᳘ ࢇLj۶ۯইگᇑუӦ୲༵ߛኮक़܈ߛڦ၎࠲Ⴀኤକኄᅃ ۅă ኄၵຕ࣏၂๖Ljܔᇀ၎ຼ୲ࠀڦೝࢅټLj֑ᆩ AD9858Բ֑ᆩAD9958ీइڦࡻ߸ڥ۶ۯႠీăփཞDDS ׂڦሗොႠీᆶֶᅴLjڞዂ۶ۯႠీֶ֖փഋăስ้ ዓᆌᆩڦDDS้LjᅃӯܸჾLjਏᆶፌॅሗොۯༀྷݔ (SFDR)ڦഗॲీ༵ࠃፌॅڦ۶ۯႠీăAD9858֑ڦᄣ ୲ᄺᇺߛᇀAD9958Ljᅺُएհೕ୲ڦၟࢅডگၿհ ᅃօศዘࠓ୳հഗೕ୲ၚᆌڦፆాྷݔټă ٗDACዘࠓ୳հഗइڥႴڦፆټປ३ࢅኝ༹Ⴀీժݥᅟ ๚ă୳հഗڦसิၳᆌतPCBӱڦքਆၳᆌࣷᆖၚ୳հഗ ڦၙၚᆌ༬Ⴀăසࡕፆټປ३ڟᆖၚLjժᆯُڞዂټ ྔሯำઍཚLj۶ۯႠీ৽ࣷইگă 2ǖAD9858ࢅAD9515ڦ۶ۯၚᆌᇑೕ୲Ăࠀ୲Ăೕ୲Ă୳հഗ࠲ڦټဣ ׂ AD9858/AD9515 AD9858/AD9515 AD9858/AD9515 AD9858/AD9515 AD9858/AD9515 AD9858/AD9515 AD9858/AD9515 AD9858/AD9515 AD9858/AD9515 AD9858/AD9515 AD9858/AD9515 AD9858/AD9515 DDS ֑ᄣ୲ (MHz) 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 DDS ೕ୲ (MHz) 155.52 155.52 155.52 155.52 155.52 155.52 155.52 155.52 155.52 155.52 155.52 155.52 DDS ୲ࠀ (dBm) +7.7 +7.7 +7.7 +7.7 +2.6 +2.6 +1.1 +1.1 −3.2 −3.2 −4.6 −4.6 DDSዘࠓ୳հഗ (MHz) 225 LPF 225 LPF 5% BPF 5% BPF 225 LPF 225 LPF 5% BPF 5% BPF 225 LPF 225 LPF 5% BPF 5% BPF Rev. 0 | Page 5 of 8 AD9515 AD9515 ೕ୲ ݴೕഗยዃ (MHz) 2 77.76 4,8 38.88, 19.44 2 77.76 4, 8 38.88, 19.44 2 77.76 4, 8 38.88, 19.44 2 77.76 4, 8 38.88, 19.44 2 77.76 4, 8 38.88, 19.44 2 77.76 4, 8 38.88, 19.44 ߵݛ ۶(ۯps) 0.56 0.56 0.33 0.33 0.63 0.63 0.42 0.42 0.73 0.73 0.64 0.64 AN-823 ຍᇕ ้क़۶!ۯ ৽ԨᆌᆩԴऻܸჾLj۶ۯᅃَኸ้क़۶ۯă၎࿋ሯำ ᅃዖೕᇘ၄ၡăሞ้ᇘాLjၳᆌ၄ྺ้क़۶ۯă࠵ִ ኟ၀հ้LjჄࡗଭ้ڦक़ժփࠦۨăݛհዐLj้क़۶ۯ ၄ྺՉᄂೋഄၙ)ࡀሶ*ڦ၄้क़ăኄଇዖ൧ ူLjํा้Ⴞᇑၙ้Ⴞڦೋֶनྺ้क़۶ۯăኄၵೋֶ ԨዊฉໜऐڦLjᅺُࡀ้ۨक़۶ڇڦۯ࿋ྺ(ߵݛrms) ௱Ljܔᆌᇀᅃ߲ኟༀ߁୲ࡧ܈ຕೝኵৎᅃ߲Քጚֶ ڦྷݔ௬ओă DDS ৽ԨᆌᆩԴऻܸჾLjDDSኸຕጴ੦ናږഗ(NCO)ᇑຕ ఇገ࣑ഗ(DAC)ڦፇࢇă 3ǖADIࠅິߛೕDDSׂ DDSׂስ ፌ֑ٷᄣ୲(MHz) ೕ୲ۙၿݴՐ୲(࿋) DACଉ(ୁۉײmA) DACݴՐ୲(࿋) ཚڢຕ AD9858 AD9958 AD9959 AD9956 AD9540 AD9859 AD9951 AD9952 AD9953 AD9954 AD9852 AD9854 AD9851 AD9850 AD9830 1000 500 500 400 400 400 400 400 400 400 300 300 180 125 50 32 32 32 48 48 32 32 32 32 32 48 48 32 32 32 40 10 10 15 15 15 15 15 15 15 20 20 20 20 20 10 10 10 14 10 10 14 14 14 14 12 12 10 10 10 1 2 4 2 2 1 1 1 1 1 1 2 1 1 1 ፌٷೕ୲(MHz) 0 to 1600 0 to 1600 0 to 800 0 to 1200 0 to 1200 0 to 1200 ኝຕݴೕԲ 1 to 32 1 to 32 1 to 32 1 to 32 1 to 32 1 to 32 ཚڢຕ 2 3 3 5 5 8 ۉೝ (ᅺཚڢփཞܸᅴ) LVDS/CMOS/LVPECL LVDS/CMOS/LVPECL LVDS/CMOS LVDS/CMOS/LVPECL LVDS/CMOS/LVPECL LVDS/CMOS/LVPECL 4ǖADIࠅິ้ዓݴದׂ ݴೕഗׂስ AD9515 AD9514 AD9513 AD9512 AD9511 AD9510 ፌٷೕ୲(MHz) 0 to 1600 0 to 1600 0 to 1600 0 to 1600 0 to 1600 0 to 1600 Rev. 0 | Page 6 of 8 AN-823 ጀ Rev. 0 | Page 7 of 8 AN-823 ጀ ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. AN05758-0-2/06(0) Rev. 0 | Page 8 of 8