2012350,、、。,、、,、、、,。DDS[1]。(DDS)。,DDS[2]。DDS,DDS,、、[3],,。AD9850,AT89S52,LC,。11.1ADAD9850,ATMELAT89S52,4*4,,。1Hz~10MHz,0.1Hz,10-5,。1。,,、(4*4),/DDS,DDSD/A。、A/DAT89S52,,LCD1602。11.2,FPGA[4],D/A,DDS,,DDS。(FPGA)DDS,FPGA,D/A,,,FPGA,D/A,,。,,[5]。,DDS,Qualcomm、AD、ScitegStanford,ADAD9850、AD9852、AD9858,DDS,D/A,。,DDS,DDSAD9850。AT89S52、CMOS8,8KFlash。Atmel,80C51。Flash,。,8CPUFlash,AT89S52。1.3I/O,AD9850。W_CLK,,FQ_UD,RESET。VINP,VINN,VINPIOUT。IOUT,200。IOUTB。AD9850,,,。FilterSolution10.0,,2。2AD9850,2V,10V,。3Multisium10.0,,10MHz,。32、、、。(167)(337000)【】ADDDSAD9850ATMELAT89S52,,、PCB,。、、,,,,。【】;;DDS;AT89S52○○154201235(154)2.1f0,F,1(:Hz)。12.2(f0:Hz;VOP-P:V)22.3(1):1Hz~10MHz;(2),:1Hz、10Hz、100Hz、1kHz、10kHz、100kHz;(3):10-5;(4):50-VOP-P10V;(5):。3、、。AT89S52,AD9850,。,,。【】[1]·.:[M].,,.:,1982.[2],,.DDS400MHz[J].,2007,9-1:161-162.[3],,.DDS[J].,2008,5(5):35.[4]Jtiemey,CMRader,BGoldAdigitalfrequencysynthesizer[J].IEEEtrans,AudioElectroacoust,1971,AU-19:48-57.[5],,.FPGADDS[J].2009,16(303):35-38.[:]f0101001k50kF9.999899.999999.9849.997f0100k500k1M10MF99.998499.99999.989.9999f0101001k5k50kVOP-P9.879.869.879.879.88f0100k500k1M5M10MVOP-P9.979.989.999.979.98●●,。,、。,,、。、,,。,,“,。,;,。。”,,。3.3,20121,,、,,,。,,。、,、,,,。,,。3.4,,,[6]。,、;,,;,,,,。,,,。,,、,,、;、、。3.5,,,。,,,,。,,,,,、。,。4、、,。,,?。,;,;,;,,。,,,,,。【】[1],.[J].,2010,17:189-190.[2],.[J].:,2012,8:102-103.[3].[J].:,2009,1:119-122.[4],.[J].,2009,3:99-100.[5],.[J].,2009,14:156-157.[6].:[M].:,2010.:(1986—),,,、。[:]●○○167