AN-1044 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 ॽAD5932Պྺײೕڇࢅೕ ፕኁǖLiam Riordan ० ԨᆌᆩԴऻၘဦ௮ຎසࢆॽAD5932ڦՊٗྺײ1 MHz ڟ10 MHzڦೕăړᆩࢽቴڟକೕฉፌഽೕ୲ۅኮࢫLj ഗॲᅜሞኄ߲༬ۨೕ୲ฉኻدᅃ߲ኟ၀հă ᆅগཞᄣڦፕᆩăཚLjኄኮࢫزႜेሜᆶႴᄲڦ ௮֖ຕăሞ๑ᆩCTRLᆅগႜೕ୲௮ኮമLjDACڦ ᅃԍሞዐक़ۉೝă AD5932ڦฉۉ AD5932ሞ࿄ۨᅭጒༀူฉۉăᆩࢽՂႷॽԈࡤၳຕڦ )੦ࢅೕ୲*स٪ഗยྺᅃ߲ᅙኪኵăڼᅃ߲ԥՊڦײस ٪ഗՂႷ੦स٪ഗLjᅺྺԥᆩઠยዃኝ߲ഗॲăႴ ᄲጀᅪڦLjܔ੦स٪ഗڦႀ֡ፕࣷጲްۯ࿋ాևጒༀ ऐLjժׂิዐक़ۉೝڦఇెLjᅺྺഐڟᇑINTERRUPT ᄲॽഗॲยዃྺ௮ఇ๕้LjՂႷူܔଚस٪ഗႜႀ֡ ፕǖ !!!!੦स٪ഗ×1 • • !!!!ഐ๔ೕ୲स٪ഗ(F START)×2 • !!!!ೕ୲ሺଉस٪ഗ(Δf)×1 • !!!!ሺଉຕस٪ഗ(N INCR)×1 DVDD CAP/2.5V DGND INTERRUPT STANDBY AGND AVDD AD5932 REGULATOR VCC 2.5V BUFFER SYNCOUT BUFFER MSBOUT MCLK SYNC INCREMENT CONTROLLER CTRL DATA 24-BIT PIPELINED DDS CORE INCR FREQUENCY CONTROLLER /24 10-BIT DAC VOUT DATA AND CONTROL FSYNC SCLK CONTROL REGISTER ON-BOARD REFERENCE FULL-SCALE CONTROL COMP 08425-001 SERIAL INTERFACE SDATA 1 Rev. 0 | Page 1 of 4 AN-1044 ᆌᆩԴऻ ణ ० ................................................................................................... 1 ࠀీ ........................................................................................... 1 AD5932ڦฉ ۉ................................................................................ 1 ॽAD5932Պྺײ௮ఇ๕ .......................................................... 3 ॽAD5932Պڇྺײೕ .......................................................... 4 Rev. 0 | Page 2 of 4 AN-1044 ᆌᆩԴऻ ॽAD5932Պྺײ௮ఇ๕ ੦स٪ഗ AD5932ฉۉኮࢫڼᅃ߲ႀڦस٪ഗ16࿋ڦ੦स٪ ഗă ᅺُLjܔᇀFSTART MSBLjᄲेሜူ௬پڦஓ(ኡII):1101 0000 0101 0001 ܔᇀFSTART LSBLjᄲेሜူ௬ڦຕ)ኡIII*:1100 1110 1011 1000 ॽူ௬پڦஓ)ኡI*ႀ੦स٪ഗᅜॽഗॲยዃྺ௮ ఇ๕)९1*ǖ0000 1111 1111 1111 ೕ୲ሺଉ Δfस٪ഗᅃ߲23࿋स٪ഗLjႴᄲܔଇ߲16࿋स٪ഗႜ Պײăڿሺݛڦၠᆯں࿋ਦۨ(९3)ă 1. ੦स٪ഗ߳࿋௮ຎ 3. Δfस٪ഗ࿋ ࿋ D15 D12 D11 ኵ 0 ࠀీ ں࿋ 1 D14 0 0 D13 1 1 D12 0 1 D10 D9 D8 D7 D6 D5 1 1 1 1 1 1 0 0 1 1 D4 D3 D2 D1 D0 1 0 0 1 1 FSTARTՎׯଇْႀ֡ፕLjMSBࢅLSBेሜă MSB and LSB loaded DAC๑ీ ስኟ၀հ MSBOUTᆅগ๑ీ ԍା ԍା ཚࡗCTRLᆅগྔև݀ةሺଉ CTRL pin ԍା SYNCOUTᆅগ࿄ስ SYNCOUT pin not selected ԍା ԍା D15 0 0 ഐ๔ೕ୲ থူઠڦଇ߲ጴবFSTARTस٪ഗLjԈઔMSBࢅLSB)९2*ă 2. FSTARTस٪ഗ D15 1 1 D14 1 1 D13 0 0 D12 0 1 D11 D0 FSTART [11:0]ڦ12࿋LSB FSTART [23:12]ڦ12࿋MSB M= f OUT × 2 n f MCLK ഄዐǖ fOUT = 0.1 MHz. M = 0x8312. ᅺُLjܔᇀփሺेڦሺଉ௮LjΔfस٪ഗڦMSB (ኡIV) ǖ 00110 000 0000 1000 Δfस٪ഗڦLSB (ኡV)ǖ 0010 0011 0001 0010 f OUT × 2 n f MCLK ഄዐǖ fOUT = 1 MHzLjAD5932ڦೕ୲ă fMCLK = 50 MHzLj MCLKೕ୲ă n = 24 ࿋LjೌాેेഗݴڦՐ୲ă M= ௮ ݛၠ N/A ኟΔf (FSTART + Δf) Δf (FSTART − Δf) ܔᇀ0.1 MHzڦሺଉLjᆩཞᄣऺ݆ݛڦ໙ሺଉٷڦၭă ྺକׂิ1 MHzഐ๔ೕ୲Ljူ௬ࠅڦ๕ۨᅭକᄲेሜپڦ ஓǖ M= D11 D10 D0 Δf [11:0]ڦ12࿋LSB 0 Δf [22:12]ڦ 11࿋MSB 1 Δf [22:12]ڦ 11࿋MSB f OUT × 2 n = 335544 = 0x51EB8 f MCLK ኄ߲ๆୃኵՂႷݴڟFSTART MSBࢅFSTART LSBă 0x51EB8 = 0101 0001 1110 1011 1000 Rev. 0 | Page 3 of 4 AN-1044 ᆌᆩԴऻ ሺଉຕ(NINCR) ཕኹೕ୲ߵೕ୲ሺଉኵ(Δf)ᇑೕ୲ሺଉຕNINCRױڦओ ऺ໙ڦăኄᅃ߲ᆶ4߲ں࿋ڦ12࿋ຕस٪ഗLjස4 ๖Ljሺଉڦፌٷຕ4095ă ሺक़߰ ኄेሜڦፌࢫᅃ߲स٪ഗăሞ੦स٪ഗዐLjྔևሺଉ ੦ዐڦǗᅺُLjኄ߲स٪ഗփႴᄲႀăၘ൧൩֖ ९AD5932ڦຕ֩ă 4. NINCRڦຕ࿋ ሞጲڿۯሺఇ๕LjCTRLᆅগ߲ڇڦஞ؋ᆩઠഔۯժኴႜ ೕ୲௮ăሞྔևڿሺఇ๕LjCTRLᆅগཞᄣᆩᇀഔۯ ௮Ljڍೕ୲ڿሺक़߰ᆯCTRLᆅগჄۉگڦೝۉߛڟ ೝገ࣑ኮक़้ڦक़क़߰ਦۨă D11 D0 0000 0000 0010 ሺଉຕ ଇ߲ೕ୲ሺଉăኄೕ୲ሺଉڦፌၭኵă 0000 0000 0011 0000 0000 0100 … 1111 1111 1110 1111 1111 1111 ෙ߲ೕ୲ሺଉă ຺߲ೕ୲ሺଉă … 4094߲ೕ୲ሺଉă 4095߲ೕ୲ሺଉă ॽAD5932Պڇྺײೕ ᅃ ׯ ྜ ڋ ௮ Lj ᆩ ࢽ ᄲ ֪ ଉ ፌ ॅ ೕ ୲ ኵ ้ Lj ૩ ස 2.5 MHzLjᅜስኄ߲ೕ୲ኵժჄ݀ໃăॽ2.5 MHzेሜ ڟFSTARTस٪ഗLjࢫᆩߛۉೝൻۯCTRLᆅগ৽ᅜڟڥ ăሞCTRLᆅগฉኻᄲுᆶۉگೝۉߛڟೝڦገ࣑Lj AD5932ڦVOUTᆅগ৽ᅜჄፌॅೕ୲ă ᄲऺ໙ཕኹೕ୲LjႴ๑ᆩසူࠅ๕ǖ fSTOP = FSTART + NINCR × Δf ړFSTARTྺ1 MHzLjΔfྺ0.1 MHz้Ljᄲ๑ཕኹೕ୲ྺ10 MHzLj Ⴔᄲ90߲ሺଉă 90)ๆ* = 5A = 0101 1010 ᅺُLjܔᇀNINCRस٪ഗLjᄲेሜူ௬ڦຕ)ኡVI*ǖ 0001 0000 0101 1010 ©2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. AN08425-0-8/09(0) Rev. 0 | Page 4 of 4