AN-935 ᆌᆩԴऻ One Technology Way t P.O. Box 9106 t Norwood, MA 02062-9106, U.S.A. t Tel: 781.329.4700 t Fax: 781.461.3113 t www.analog.com ADCՎუഗ᳘ࢇമ܋ยऺ ፕኁǖRob Reeder ० ڼ1օǖକဣཥतยऺᄲ൱ ԨᆌᆩԴऻଚڦօୁײᅜӻዺ܁ኁยऺएᇀߛዐೕ ټᆌᆩڦፌॅADCമ܋ă ڼ1օփჾጲLjڍକ༬ۨᆌᆩڦᄲ൱Ljٗᅃਸ๔न ስኟඓڦᇮॲLjޗٷ३ณዘްْຕLjժํ၄ႴႠ ీăଚ߳ዖยऺᄲ൱LjยۨణՔ߾ፕহ၌ăኄᄣፔᆶ૧ ᇀስADCࢅՎუഗă ሞ၄پཚ႑ဣཥࢅ֪ยԢዐLjྺକሞຕጴᇘዐኴႜ႑ࡽ تLjཚႴॽఇె႑ࡽገ࣑ྺຕጴ႑ࡽăܸLjྺ ఇຕገ࣑ഗ(ADC)ยऺՎუഗമۉ܋ୟඐీਏᆶᅃۨ ႠLjᆮഄሞߛዐೕဣཥዐă႞ሏڦLjԨ࿔ถڦ օᆫࣅୁײᅜӻዺ܁ኁਸ݀ፌॅڦADCമ܋ăୁײᅟ ᇀํแLjᆌᆩᇀबࢭඪࢆᆌᆩኮዐLjᅜڟٳႴႠ ీᄲ൱ă օୁײएᇀᅜူ०ࢇޙܸڇஇडڦօየǖ 1. କဣཥतยऺᄲ൱ă 2. ඓۨADCፆੇă 3. ඓۨADCएጚႠీă 4. ߵሜႴᄲስՎუഗࢅᇸፇॲă 5. ܔยऺႜएጚ֪ă ૩සLj्ย٪ሞᅃ߲ᆌᆩLjᄲ൱֑ᄣ୲ྺ61.44 MSPSLjᅜ վइྺټ20 MHzLjዐ႐ೕ୲ྺ110 MHz)100 MHz120 MHz* ڦ႑ࡽăሶᄲ൱႑ሯԲ(SNR)ᄲᆫᇀ72 dBLjᄺ৽ᅪ࿆ጣႴᆩ ᅃ߲14࿋ADCઠ༵ࠃႴ႑ሯԲႠీăࠀࡼᆌگᇀ500 mW/ ཚڢăࢫLj݀၄ADIླྀڦ14࿋Ă80 MSPS AD9246 ADCీፁኄၵဣཥपႠీᄲ൱ăഗॲยऺ߾ፕۉუྺ 1.8 V3.3 Văኄഗॲᅺ)ࡼࠀگࢅټ९1*ܸԥዐă ሞ๖૩ยऺዐLjADCྺ110 MHzዐೕ႑ࡽLjྺټ20 MHzLj֑ᄣ୲ྺ61.44 MSPSăᆯᇀټড)ᅃ߲లઊຯ ༬ೕ*Ljᅺܸ֑ᆩକᅃዖၿናದरຍăኄૌದरຍټ ߸گLjڍሞኸۨೕ୲ํాྷݔ၄ଆࡻದăኄዖ൧ ཚᄲ൱ॽᅃ߲ߌۉईཎᄟ༹ىዩੵথሞఇె႑ࡽࢅ ADC܋ฉLjᅜཚࡗၿናݛ๕๑सิۉඹᇺADC पăසࡕణՔዐೕ࿋ᇀएڼ)ټᅃలઊຯ༬ೕ*ኮాLjሶ ᆩ०ڦڇRCྪஏઠํ၄گཚ୳հഗă 1 ยऺᄲ൱๖૩ হ၌ ၙኵ ยऺ၌ኵ ፆੇ(Ω) 50 30 ۉუጂհԲ (VSWR) 1 1.5 ཚټೝ།܈ (dB) <0.5 <1 ዐೕ–3 dBټ (MHz) 150 300 Rev. 0 | Page 1 of 8 !႑ሯԲ (SNR)(dBc) 72 69 ሗොۯༀྷݔ (SFDR)(dBc) 85 80 ൻۉۯೝ(dBm) 4 7 AN-935 ణ ० .................................................................................................... 1 ڼ5օǖܔยऺႜएጚ֪ ...................................................... 4 ڼ1օǖକဣཥतยऺᄲ൱ ..................................................... 1 օየ6 ......................................................................................... 5 ڼ2օǖඓۨADCፆੇ .......................................................... 3 ஃ .................................................................................................... 6 ڼ3օǖඓۨADCएጚႠీ .......................................................... 3 ց؊܁ ........................................................................................... 6 ڼ4օǖߵሜႴᄲስՎუഗࢅᇸፇॲ ....................... 3 Rev. 0 | Page 2 of 8 AN-935 ڼ2օǖඓۨADCፆੇ ྷ(SFDR)ྺ82.7 dBcLjথৎຕ֩ଚࡀ߭ă֑ण༬Ⴀຕ ้Ljᆌ๑ᆩߛႠీ႑ࡽ݀ิഗࢅ୳հഗLjᅜՍሞ้֪ ൣأ႑ࡽ݀ิഗዐ٪ሞڦඪࢆၿհࢅሗොݴׯă ሞୁڼײ2օዐLjႴඓۨADCፆੇ)९1*ăᆩഗॲ AD9246ᅃ࣐ݥ؋႙ईኁຫਸ࠲ۉඹ႙ADCăኄ৽ ᅪ࿆ጣፆੇ้ՎڦLjܸࣷໜጣఇె႑ࡽڦೕ ୲݀ิՎࣅăඓۨഗॲڦፆੇ้Lj๑ᆩAD9246ׂ ᄻ௬ዐۉڦጱ߭ăሞۉጱ߭ዐLjቴڟሞ110 MHzူ ֪߶ڦڥጷఇ๕ፆੇăሞ૩ዐLjADCాևሜੂഐ ઠၟᅃ߲6.9 kΩۉፆᇑᅃ߲4 pFۉඹժăፌࡻሞADC߶ጷ ఇ๕ူႜದLjᅺྺኄኟADCํा֑ᄣ้ڦक़ă2 ଚକևݴAD9246ׂᄻ௬ۉጱ߭ă VIN+ থူઠLjᅎ୳أհഗժॽADCೠࠚӱዘႎথ֪႑ࡽ ݀ิഗăᆌዘႎۙবժऻ႑ࡽ݀ิഗڦۉೝLjُت ྺ14 dBmLjᅜ֑णൻۯຕăᆌሞፁࠕాټڦ௮ ೕ୲Ljᅜକཚټೝ།ڦ܈Վࣅժइ–ڥ3 dBۅ1ăُ૩ ዐLjമ܋ఐණದዃዐᆶᅃ߲०ڇRC୳հഗLj๑ཚټೝ།܈ ٳ1.2 dBLjټሀྺ100 MHză ฉຎຕ़ᅙ֑णྜԹLj৽ᆌፕᅃၵਦۨକăړᄲ൱႑ሯ Բྺ72 dBĂሗොۯༀྺྷݔ83 dBc้LjՂႷ๑ᆩᅃ߲ੇं ۠୳հഗ(AAF)Ljᅜ߀ሗොႠీժ๑႑ࡽၿհডگăڍ ኄժփీਦൻࢅۯཚټೝ།܈࿚༶ăఐණೠࠚӱฉ ୳۠ंੇڦհഗ๑ణՔཚټປ३ă๑ᆩᅃ߲०ڦڇ ժీߌۉഐᅃۨፕᆩLjᅺྺሞణՔೕ୲ူLjኄዖഗॲປ ३߸ณLjࡐྔټইႠీ߸ॅăܔᇀൻۯLj๑ᆩᅃ߲ 1:4ڦՎუഗLjᅜ๑ADCڟٳଉײᄲ൱ăՎუഗ๑႑ࡽ ሺٷ+6 dBLjᅺܸᅜ߸ںܠցൻۯᄲ൱ăፌࢫLjᆌ ᆩ๐ଉྪஏݴဆᅏ(VNA)֪ଉፆੇࢅVSWRăణ Քೕ୲Ljକದ൧ăُ૩ዐLj110 MHzူ֪ڥኵྺ 35 ΩLjࡕVSWRྺ1.44:1ă ADC INTERNAL INPUT Z R jX jX PARALLEL CONFIGURATION VIN– 6.9k 06982-001 R 4pF 1 ॽADCాڦևፆੇੂፕۉፆᇑۉඹڦժದዃ 2 ժದዃူڦAD9246ፆੇ1 ೕ୲(MHz) 109.02 109.64 110.27 110.89 111.52 112.14 1 ֑ᄣఇ๕ R (kΩ) C (pF) 7.012504 −4.023861 7.001112 −4.020610 6.909521 −4.017265 6.806530 −4.013601 6.750957 −4.012279 6.695931 −4.010091 ԍఇ๕ R (kΩ) C (pF) 23.621962 −2.219631 23.501558 −2.219192 23.226639 −2.218956 23.724023 −2.218073 23.477964 −2.216845 23.463246 −2.216127 ڼ4օǖߵሜႴᄲስՎუഗࢅᇸፇॲ ڼ4օߵሜႴᄲስՎუഗࢅᇸፇॲăฉᅃօඓ ૬କएጚLjྺԨօူٶକएإăথူઠLjՂႷስՎუഗ ࢅRᇑLڦᇮॲኵᅜದሜLjࢫᄲሞADCᇑՎუഗْप ኮक़ॺ૬ᅃ߲ీํ၄Ⴔጺ༹Ⴀీ୳۠ंੇڦհഗ)2*ă ༹ٚႜ๖૩ጱยऺዐᆩڦڟኵă 1 ᆶ࠲ADC֪ܠ߸ڦ႑တLj൩֖ለAN-835ă ڼ3օǖඓۨADCएጚႠీ ڼ3օඓۨADCڦएጚႠీLjᅜሞᆫࣅ߳ၜยऺ֖ຕമ ߸ࡻںକADCڦႠీ၄ăྺඓۨኄዖएጚLj൩๑ᆩೠ ࠚӱLjԍഄఐණದዃփՎăኄሞׂຕ֩ଚࡀ ߭ူLjADCፌీ၄ઠڦ༬Ⴀă ࢫLjጣण߳ၜႠీኸՔăኄཚࡗܔೕ୲ྺ110 MHzLjଉݴײԞ(dBFS)ྺ−1 dBڦ႑ࡽ֑ڦᄣኵፔ ޱ૬ᄾՎ࣑(FFT)Ljࡕ႑ሯԲྺ72 dBLjሗොۯༀݔ XFMR 0.1μF 1:4 Z 0.1μF 33Ω AIN AD9246 INPUT Z = 50Ω 6.9kΩ L 0.1μF 0.1μF 0.1μF R 33Ω ~AIN 4pF ADC INTERNAL INPUT Z @ 110MHz CML 2 മ܋ᇱǗۉፆኵࢅߌۉኵՂႷᇑሜ၎ದ Rev. 0 | Page 3 of 8 06982-002 R AN-935 ኄᅃօঢ়ᄓईํᄓڦᆩኮتăᆯᇀփཞՎუഗڦႠీ ీ٪ሞডֶٷᅴLjᅺܸስՎუഗ٪ሞᅃۨవ܈ăԨ૩ ՎუഗߵڦLjՎუഗᅙঢ়֪ଉࡗLjഄႠీᄺᅙ౬ ൣăᅃӯܸჾLjᆌስᅃ߲၎࿋փೝ࢚༬ႠڦՎუ ഗLjኄݥዘᄲă๖૩ᆌᆩټডLjႴൻۯ گLjᅺܸ֑ᆩକᅃዖፆੇԲྺ1:4ڦᅙኪՎუഗă ࠲ᇀසࢆྺADCስՎუഗLjᆶᅃၵ०ڦڇኸళLjഄዐᅃ ཉ࠲ጀरຍࡀ߭ăԲසLjᆌጮဦԲড࣮Ă֭ᅜत၎ ࿋ᇑ܈ޗփೝ࢚ڪरຍࡀ߭ăසࡕຕ֩ዐ࿄Քጀኄၵ ֖ຕLj൩ၠሰฆൽ၎࠲ຕLjईᆩ๐ଉྪஏݴဆᅏ ႜ֪ଉăስՔጚཚଉ᳘ࢇՎუഗLj࣏ስәLjൽਦ ᇀټᄲ൱ăՔጚՎუഗټڦᅃӯتᇀ1 GHzईᅜူ൶ क़Ljәሶํ၄ߛټڦܠڥă ႴጀᅪڦLj܋থሞ؛पࢅْपኮक़ݴLjُڍ૩ዐLj ྺକॽႴᇮॲຕইፌگLjኻॽْप܋থăߵਏ༹ᆌ ᆩLjݴਸ܋থీ߸ࢇă ሞఇెዐLjᆌ֑ᆩ15 Ω50 ΩڦၭኵۉزፆăԨ૩๑ ᆩକଇ߲33 Ωۉፆăኄᄣፔྺକ၌࣐ٗݥ؋ADC࣮ڟఇ ెዐࢁۉڦጀଉăኄᄣ࣏ᆶዺᇀඓۨઠጲമपڦᇸ ፆੇăሞ90%ڦ൧ူLj๑ᆩ33 ΩۉፆLjํڍ७ኤLjᆶ ้߀Վُኵᅜྲ༵ืႠీă থူઠLj൱Վუഗْपۉ܋ڦፆăऺ໙၂๖Ljܔᇀْप ܸჾLjگᇀ251 Ωۉڦፆྺᅃ߲ডࡻڦഐۅă200 Ωᆩᇀ ၙڦ1:4ፆੇԲՎუഗăਸ๔ऺ໙้Lj൩ᆩኸۨዐ႐ೕ୲ူ ࣮ڦኵઠऺ໙ํा༬ኙፆੇ(Z0)ă ᅜူྺՎუഗْप܋ڦፆੇऺ໙๖૩ă࣮ྺ 50 − Z0 ࣮(RL) = -18.9 dB @ 110 MHzǙ 20 log 50 + Z0 ᆩ࣮ኵ൱Վუഗْपڦ༬ኙፆੇă −18.9 50 − Z 0 10 20 = 50 + Z 0 ഄዐLjZ0 = 39.8 Ωă （ ） （ ） ሞၙڦ1:4ፆੇՎუഗዐLjْपฉڦ200 Ωᆌڪॏᇀ؛पฉ ڦ50 Ωăํڍाဣཥዐժ࿄සُăྺକඓۨݒพ࣮؛पํڦ ाፆੇLjᆩฉᅃօ൱ڦZ0ኵLjժႜᅜူ०ऺڇ໙ǖ Z(Prim Reflected) Z(Sec Ideal) 39.8 = 200 = Z(Prim Ideal) Z(Sec Reflected) 50 X ൱XLjX = 251 Ωă ᆯᇀՎუഗ٪ሞᅃၵփࡼLjᅺܸ251 Ωْڦपۉ܋ڦፆ ࣷܔኄၵࡼႜցăኄᅃ߲ডࡻڦՎუഗْप܋ڦ থኵLjᅜॽኟඓڦፆੇݒพ࣮؛पăኄዖ൧ူLjยऺᄲ ൱ኸۨڦ50 Ωă থူઠLjՂႷඓۨߌۉኵLLjᆩᇀᅜၿናݛ๕ڸၩాև ADCसิۉඹăኄݥ०ڇLjኻႴॽۉඹኵC (4 pF)ยྺLኵ नă ᅜူྺߌۉLऺ໙๖૩ǖ XC = 1 2πfC = 1 2π × 110 MHz × 4 pF = 361.7 Ω X L = 2πfL XC = X L ᆩኄၵኵᅜ൱Lǖ L= XC 2πf = 361.7 2π × 110 MHz = 523 nH LੇۉڦԥยྺCڦ၎ཞăُ้Ljሞ110 MHz้Lj4 pFۉඹገ ࣑ྺڪᇀ523 nHߌۉڦăኄ৽ྺLኵยۨକᅃ߲ഐۅă ڼ5օǖܔยऺႜएጚ֪ ሞლ൱ፌॅADCՎუഗದײࡗڦዐLjፌࢫᅃօᆩᅜമ ߳օ൱ۉڦፆኵࢅߌۉኵܔยऺႜएጚ֪ăምْ֪ ଉ߳ၜႠీኸՔዘᄲڦLj்႑ሯԲĂሗොۯༀ ྷݔĂൻۯĂཚټೝ།ࢅ܈ፆੇLj৽සമ௬ሞఐ ණཉॲူඓۨADCएጚႠీ้ፔڦఫᄣă ኵڥጀᅪڦLjྺइڥፌॅႠీLj൱ڦRኵࢅLኵۼీ ᆶփཞăኄၵኵీᇑਸ๔้ᅈࠃᆌฆೋࡻࢅᆩᇮ ॲٷၭऺ໙ڦኵኮक़٪ሞֶᅴăײࡗްݒዐLjᆩۉጱ ߭ઠ߶ጷْՎࣅ൧ă Rev. 0 | Page 4 of 8 AN-935 Ԩ૩ዐLjገ࣑ഗথৎଉײLj႑ሯԲࢅሗොۯༀتྷݔ ᇀۨܮణՔኮా)९3*ăሞ110 MHz้Lj႑ሯԲথৎ72 dBLj ሗොۯༀྺྷݔ80 dBcă4๖ྺ֪ڦڥൻ)ۯ3.1 dBm*ፌዕႠీࡕăዐཞ้၂๖Ljሞ50 MHzೕዐLjཚ ټೝ།گ܈ᇀ0.5 dBă–3 dBྺټ150 MHzLjፁ๖૩ᄲ ൱Ljժྺยऺ༵ࠃ؊ፁڦሗොᅞీ૰ă 110MHz = 42 VSWR = 1.2 0 @ 110MHz IF SNR = 71.5dBFS SRDR = 83.4dBc @ –1dBFS –10 –30 06982-005 INPUT AMPLITUDE (dBFS) –20 –40 –50 5 ֑ᆩ๖૩Վუഗۉୟ้LjADCፆੇࢅVSWR֪ڥႠీ –60 –70 ፌࢫLjԨ૩၂๖LjದۉୟईADCఇెമ܋փ߀ీڍ ൻۯĂཚټೝ།)܈ዐೕཚࢅ*ټሜݒพࠀ୲ (VSWR)ڪኸՔLjཞ้࣏ీํ၄ᇑຕ֩ࡀۨ၎ཞڦ ADC႑ሯԲࢅሗොۯༀྷݔă –80 –90 06982-003 –100 –110 –120 0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0 27.5 30.0 օየ6 FREQUENCY (MHz) 3 ֑ᆩ๖૩Վუഗۉୟ้LjADC႑ሯԲࢅሗොۯༀ ྷݔፌዕ֪ࡕ ୁײዐ࣏ᆶᅃ߲օየ6LjनܔԲऺ໙Ⴀీᇑํा֪ڥ ࡕăፕྺॠᄓLj໙ፆੇࡕժᇑ֪ڥኵႜԲডă ᅜူྺኝ߲ದऺڦ໙๖૩ǖ 0 –0.5 –2.0 –2.5 –3.0 –3.5 –4.0 –4.5 60 80 100 1 2πfC = 1 2π × 110 MHz × 4 pF = −361.7Ω , ADCၙፆੇ 6.9 kΩ ||4 pF ई (6.9 kΩ + j0)||(0 − j361.7) = (18.9 − j361), ADCፆੇ 1 1 XC = = = −361.5 Ω , 2πfL 2π × 110 MHz × 523 nH –3dB BANDWIDTH FROM 50MHz TO 200MHz Lၙፆੇ 06982-004 INPUT DRIVE LEVEL (3.1dBm) AMPLITUDE (dBFS) –1.5 –5.0 40 XC = PASS-BAND FLATNESS FROM –0.3dB FROM 100MHz TO 120MHz –1.0 120 140 160 180 200 220 (18.9 − j361)||(0 + j361.5) = (6.93 kΩ + j72.8) 240 (6.93 kΩ + j72.8) + (66 + j0) = (6.97 kΩ + j72.8), ཁेଇ߲33 Ωۉፆ FREQUENCY (MHz) 4 ֑ᆩ๖૩Վუഗۉୟ้LjADCൻࢅۯཚټ ೝ།܈ፌዕ֪ࡕ Վუഗْप܋ڦፆੇྺ 5๖ྺཚࡗ๐ଉྪஏݴဆᅏ֪ଉڦ๏ຯᇑย ऺڦVSWRፖՔڦፇࢇă110 MHzူLjፆੇሀྺ41 Ωă VSWR๔ዕথৎ1.2:1Lj୳ࢇޙհഗ༬Ⴀă (6.93 kΩ + j72.8)||(242 + j0) = (234 + j82.1m) ߵᅜူࠅ๕໙ਏ༹ٷၭ (Re2 + jX2)1/2 = 234 Ω සڼ5օᅃᄣLjምᆩԲ૩Lj 234 200 = 50 X ൱XLjX = 42.7 Ωăኄዖ൧ူLj֪ࡕࢅ໙ڦፆੇ ኵݥথৎă Rev. 0 | Page 5 of 8 AN-935 ஃ ց؊܁ ॺظႎยऺ้ႴጀᅪڦᄲۅԈઔǖܔยऺዐڦዘᄲ֖ຕಇ ႾǗᆩᅃ้ۨक़ઠۨڦړဣཥࢅยऺᄲ൱ă AN-742Ljਸ࠲ۉඹADCڦೕ୲ᇘၚᆌă ስՎუഗ้ՂႷጀᅪڦLjՎუഗփ၎ཞLjԲডփཞ ᇮॲڦፌࡻӸ݆ඇ௬କ߳ၜՎუഗࡀ߭ăසࡕுᆶ၎ ࠲ࡀ߭Lj൩ၠሰฆൽ֖ຕጨଙăߛዐೕยऺీܔՎ უഗ၎࿋փೝ࢚ߌ௺ݥăሞटߛዐೕยऺዐLjీႴᄲ ֑ᆩଇ߲ՎუഗईәLjᅜᅞ౾ْၿհ฿ኈă ስADC้LjႴඓۨ๑ᆩ࣐؋႙࣏࣐ݥ؋႙ADCăݥ ࣐؋႙ईਸ࠲ۉඹ႙ADCڦፆੇਏᆶ้ՎႠLjߛዐೕ ้Ljยऺవٷ߸܈ăසࡕ๑ᆩ࣐ݥ؋႙ADCLj൩๔ዕሞ߶ ጷఇ๕ူႜದLjժ๑ᆩሰฆྪበฉ༵ࠃڦ ፆੇۉጱ߭ăन๑ሞߛዐೕူLj࣐؋႙ADCᄺ߸ᅟᇀย ऺLjࣷڍԲ࣐ݥ؋႙ADCၩࡼ߸୲ࠀܠăሞऺ໙RኵࢅLኵ ้Lj൩ጀᅪLjኄ߲ডࡻڦഐۅăժ߲߳ݥᆌᆩዐڦᆶ քਆࢅसิۉඹۼ၎ཞLjᅺُLj൩ጀᅪLjీႴᄲႜݒ ްยऺLjᅜፁਏ༹ᆌᆩڦႠీᄲ൱ă AN-827Ljٷݣഗᇑਸ࠲ۉඹADCথ੨ڦದ݆ݛă AD9215ĂAD9226ĂAD9235ĂAD9236ĂAD9237ĂAD9244 ࢅAD9245ڦADCਸ࠲ۉඹፆੇ)S-֖ຕ*ຕă൩മྫ ၎ᆌׂᄻ௬Ljۅऍ“ೠࠚӱ”(Evaluation Boards)Ljࢫူ ሜMicrosoft Excelۉጱ߭ă Rob Reeder, “Transformer-Coupled Front-End for Wideband A/D Converters,” Analog Dialogue 39-2, 2005, pp.3-6. Rob Reeder, Mark Looney, and Jim Hand, “Pushing the State of the Art with Multichannel A/D Converters,” Analog Dialogue 39-2, 2005, pp. 7-10. Walt Kester, “Which ADC Architecture is Right for Your Application?”Analog Dialogue 39-2, 2005, pp. 11-18. Rob Reeder and Ramya Ramachandran, “Wideband A/D Converter Front-End Design Considerations—When to Use a Double Transformer Configuration,” Analog Dialogue 40-3, 2006, pp. 19-22. Rob Reeder and Jim Caserta, “Wideband A/D Converter Front-End Design Considerations:Amplifier- or Transformer Drive for the ADC,” Analog Dialogue 41-1, 2007, pp. 6-12. Analog Devices (www.analog.com)LjAD9246Lj80 MSPS/ 105 MSPS/125 MSPSĂ14࿋Ă1.8 Vਸ࠲ۉඹ႙ADCຕ֩ă Mini-CicuitLjADT1-1WTຕ֩ă M/A-COMLjETC4-1T-7ࢅETC1-1-13ຕ֩ă Rev. 0 | Page 6 of 8 AN-935 ጀ Rev. 0 | Page 7 of 8 AN-935 ጀ ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. AN06982-0-9/07(0) Rev. 0 | Page 8 of 8