AN-769 One Technology Way P.O. Box 9106 Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 www.analog.com AD9540 Ted Harris (ADC) OC-12 (DAC) 622.08 MHz SYNC AD9540 IC (SNR) (BER) ADC DAC 1 “AN-756”” (PLL) PLL ADI AD9540 (IC) ADI AD9540 (CML) 655 MHz ADC DAC VCO (Kv) AVDD AGND DVDD DGND VCML VCO VCO VCP CP_RSET CP REF, AMP REFIN R DIVIDER PHASE FREQUENCY DETECTOR R E F IN N DIVIDER SYNCIN/STATUS CHARGE PUMP CP CLK2 SYNC, PLL LOCK CLK2 CLK1 CML CLK1 DIVIDER 1, 2, 4, 8 SDO VCML SERIAL CONTROL PORT CS CLK TIMING AND CONTROL LOGIC S2 S1 S0 OUT0 O U T0 SCLK SDI/O CMLRSET PHASE/ FREQUENCY PROFILES DIVCLK 48 14 1. AD9540 Rev. 0 | Page 1 of 2 DDS 10 DAC DACRSET IOUT IO U T AN-960 ᆌᆩԴऻ ଷྔLjยऺටᇵႴᄲ୯࣍ୟ୳հഗټLjᅺྺ֖ຕฉ ټሯำăഄْLjྺକํ၄ܠຕ้ዓۉୟႴڦუӦ୲LjႴ ٪ሞᅃۨڦ࢚࠲ဣăᅃӯܸჾLj࣍ୟټሁLj࣍ୟڦ ᄲॽᅃ߲ྔևԲডഗ้֭ዓ႑ࡽୟ০ăԨ૩ዐᆩڦ ֑णࢅ้ۨक़ሁ܌Ljڍᄺࣷᆶ߸ܠઠጲएጚࢅ६ೕ६၎ ADCMP563ၳࡕॅă ഗԨวڦሯำཚࡗ࣍ୟăሞ้ዓᆌᆩዐLjᅜཚࡗኄዖ ፌዕۉڦڟڥୟڦ०ࣅස2๖ăCLK1/CLK1 ࢚ൽปઠํ၄ড࣍ڦୟټLjဎึॺ૬้क़Ljᅜᆶ૧ᇀ ૾থCLK2/CLK2ăഗॲڦՊݛײ๕๑CMLൻۯഗڦ ࣍ୟዐڦሯำᅞă ઠጲCLK1ڦ࿄ݴೕLjڍDDSᆯݴೕ้ࠃ༵ዓ ຕጴ้ዓႴڦඓೕ୲ࢅۙ၎࿋ٗഗॲڦথຕጴ )622 MHzأᅜ2 = 311 MHz*ăዐ၂๖କPLL REFڦৗ ೕ୲ࢇׯഗ(DDS)ዐׂิăAD9540ฉڦDDS༵ࠃ48࿋ೕ୲ ༹ናږഗࠀీLjᄇ๖କഄᇑ38 MHzৗ༹ದࢇ๑ᆩڦ൧ă ۙၿݴՐ୲)1.42 μHzLjፌ้ٷዓ୲ྺ400 MHz*ࢅ14࿋၎ ଇ้߲ዓ၂๖ሞOUT0 )گ۶ۯ622 MHz้ዓ*ࢅOUT1 ࿋ۙব)0.022*܈ăDDSڦᅃዖዘࠓڦኟ၀հLjᅺُ )၎࿋Պޤײዺ้ዓ*تăሞޤዺ้ዓዐLjՉᄂೋၽ)ई้ Ⴔᄲଇ߲ྔڦྔܮևۉୟăံLjႴᄲܔዘࠓڦኟ၀հᆌ क़ჽ*ཚࡗၠDDSዐՊ၎࿋ೋᅎઠํ၄ڦLjࣷ߀Վ ᆩᅃ߲ణՔ้ዓ୲ټڦཚ୳հഗăኄࣷၩأೕዐ Բডഗࢻتց֮ڦ၎ۅ้ܔă ܠڦຕ֑ᄣ࿁ၟLjཞ้ၩأᅙᆅDAC႑ࡽዐڦ 38.875MHz OSCILLATOR REFIN M DIVIDER R E F IN N DIVIDER PHASE FREQUENCY DETECTOR CHARGE PUMP CLK2 S2 S1 S0 VCO CLK2 CLK1 CML CLK1 LOW-PASS (LOOP) FILTER 622MHz CLK2 PLL LOCK CLK2 CP O U T0 DIVIDER 1, 2, 4, 8 PHASE/ FREQUENCY PROFILES IOUT 48 14 OUT0 DDS 10 2. ದዃྺມ้ዓׂิఇ๕ڦAD9540 Rev. 0 | Page 2 of 12 ADCMP563 OUT1 DAC IO U T ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. AN05356–0–4/05(0) BAND PASS FILTER O U T1