DDS芯片AD9832的原理及应用

-11-DDSAD9832PrincipleandApplicationofAD9832JiangYurongZhouYouqingWuGuiqing:AD9832AD,(DDS)AD9832,AD9832:;DDS;AD9832;:TN741:B:1006-6977(2001)10-0011-03DDSAD983245G86305(DDS),,,DDS,,,,1DDSDDS1phase,2N,,NROM,ROMROM,DAC,3.25G863045G8630,4,INosc1MHz,CTL1CTL4CTL5CTL6VDD,100111,,OUTpf0.1Hz5:2001-04-10:0110031DDS-12-200110200110foutfclkphase:fout=(phase/2N)fclk,N,DDSfclk/2,40%fclkDDS:fmin=fclk/2N,N,,2AD98322.1AD9832AD9832ADDDS,25MHz2AD9832(NCO)10(DAC)3232122.2AD9832AD9832:MCLK:,DDSSCLK:,SCLKAD9832SDATA:16FSYNC:,,FSELECT:AD9832FREQ0FREQ1FSELECT=0,FREQ0;FSELECT=1,FREQ1FSELECTFSELECT,FSE2LECT,FSELECTDGNDPSEL0,PSEL1:AD9832PHASE0PHASE1PHASE2PHASE3PSEL0PSEL100,PHASE0;10,PHASE1;01,PHASE2;11,PHASE3PSEL0,PSEL1PSEL0,PSEL1PSEL0,PSEL1,PSEL0,PSEL1DGNDDVDD:(5V10%3.3V10%)DGND0.1FDGND:AGND:AVDD:(5V10%3.3V10%)AGND0.1FFSADJUST:D/AAGND,D/AREFIN:REFOUT:2AD9832-13-DDSAD98323AD9832IOUT:,AGNDCOMP:3AD9832,,,DSP,DSP,AD9832D/A,3DSPAD9832,AD9832,D/A,AD9832DSP,SCLKSDATAFSYNCAD9832FSYNC=0,AD9832,SCLK,SCLK,16SCLK,FSYNC=1/,4,4,8AD983232,12,10DACfout=FREGfMclk/232,FREG4DDS,AD9832,,AD9832DDS,,,,,AD9832,1.AnalogDevicesInc.CMOSCompleteDDSAD9832,19992..DDS.,1997,12:24283..AD7008.,2000,11:3033:2001-05-15:011004