基于FPGA的信号发生器设计

27、、。。。FPGADDS。FPGA。1、FPGA、D/A、、。FPGA1121.1633192.。FPGAAlteraFPGA、、。、、。D/AFPGATP273A1002-2090201503-0088-04DesignofSignalGeneratorBasedonFPGALiuYingnan1YiShujuan1GongLongjiang21.CollegeofInformationandTechnologyHeilongjiangBayiAgriculturalUniversityDaqing1633192.PropagandaDepartmentNortheastPetroleumUniversityAbstract:Asdebuggingequipmentthedigitalsignalgeneratorwasanindispensablepartindigitalsignalprocessingandwasusedinproductionandlife.SinceFPGAadvantageofhighdensitylowpowerconsumptionsmallvolumeandhighreliabilityFPGAofAlteracompanywasusedtorealizethedesignofdigitalsignalgeneratorandthedigitalsignalgeneratorcouldgeneratesinewavesquarewavetrianglewaveandsawtoothwaveofadjustablefrequency.Throughthehardwaretesttheresultsshowedthatthesystemhadthecharacteristicsofhigheraccuracystrongloadcapacitystableoperation.KeywordssignalgeneratorD/AconversionFPGA2014-09-041982-。[e-mail]。doi:10.3969/j.issn.1002-2090.2015.03.02027320156JournalofHeilongjiangBayiAgriculturalUniversity27388~91Jun.201531Fig.1Componentofdigitalsignalgeneratorsystem1.12FPGA50MHZ。C5CLK1。1.23USBVEE+5V3.3VVCCD/A。1.3FPGAFPGA45000011600036010RAM20480I/O310。2Fig.2Clockcircuitofsystem3Fig.3SupplyofpowercircuitFPGA89271.4D/AD/A。D/A。5。4EPF10K50ETI144-2Fig.4StructurediagramofEPF10K50ETI144-2chip5D/AFig.5SchematicdiagramofD/Aconversioncircuit1.56D/AD/A、、、。276Fig.6Circuitoffilter9033。8。4FPGA10Hz、100Hz、1000Hz1Hz~1MHz、、。。7Fig.7Flowchartofsystem8Fig.8Outputwaveformofsystemtest1.J.201224468-70.2.LEDJ.200719634-35.3.J.201426220-24.4.J.20033115-117.5.J.2010265-2178-180.6.J.2007238-2267-269.7.M..1997.FPGA91