LINER_LTC1068滤波器集成芯片

1LTC1068SeriesClock-Tunable,QuadSecondOrder,FilterBuildingBlocksSFEATUREnFourIdentical2ndOrderFilterSectionsinanSSOPPackagen2ndOrderSectionCenterFrequencyError:±0.3%Typicaland±0.8%MaximumnLowNoiseper2ndOrderSection,Q≤5:LTC1068-20050μVRMS,LTC106850μVRMSLTC1068-5075μVRMS,LTC1068-2590μVRMSnLowPowerSupplyCurrent:4.5mA,Single5V,LTC1068-50nOperationwith±5VPowerSupply,Single5VSupplyorSingle3.3VSupplyTheLTC®1068productfamilyconsistsoffourmonolithicclock-tunablefilterbuildingblocks.Eachproductcontainsfourmatched,lownoise,highaccuracy2ndorderswitched-capacitorfiltersections.Anexternalclocktunesthecenterfrequencyofeach2ndorderfiltersection.TheLTC1068productsdifferonlyintheirclock-to-centerfrequencyratio.Theclock-to-centerfrequencyratioissetto200:1(LTC1068-200),100:1(LTC1068),50:1(LTC1068-50)or25:1(LTC1068-25).Externalresistorscanmodifytheclock-to-centerfrequencyratio.Highperformance,quad2ndorder,dual4thorderor8thorderfilterscanbedesignedwithanLTC1068familyproduct.DesigningfilterswithanLTC1068productisfullysupportedbyFilterCADTMfilterdesignsoftwareforWindows®.TheLTC1068productsareavailableina28-pinSSOPsurfacemountpackage.AcustomizedversionofanLTC1068familyproductcanbeobtainedina16-leadSOpackagewithinternalthin-filmresistors.PleasecontactLTCMarketingfordetails.DUESCRIPTIOFilterCADisatrademarkofLinearTechnologyCorporation.WindowsisaregisteredtrademarkofMicrosoftCorporation.,LTCandLTareregisteredtrademarksofLinearTechnologyCorporation.USAOPPLICATIUAOPPLICATITYPICALDual,Matched,4thOrderButterworthLowpassFilters,Clock-TunableUpto200kHzf–3dB=fCLK/25,4thOrderFilterNoise=60μVRMSINVBHPB/NBBPBLPBSBNCAGNDV+NCSALPABPAHPA/NAINVA28272625242322212019181716151234567891011121314INVCHPC/NCBPCLPCSCV–NCCLKNCSDLPDBPDHPD/NDINVDLTC1068-25R3120kR3320kR2314kR1320k0.1μFR2114kR2220kR1214kR3210kR3410kR2420kR1414kR1120kVIN1VIN25V1μFVOUT1VOUT21068TA20a–5VfCLK=(25)(f–3dB)RELATIVEFREQUENCY[fIN/(f–3dB)]0.1GAIN(dB)–10–20–30–40–50–60–70–801101068TA20b100GainvsFrequencynLowpassorHighpassFilters:LTC1068-200,0.5Hzto25kHz;LTC1068,1Hzto50kHz;LTC1068-50,2Hzto50kHz;LTC1068-25,4Hzto200kHznBandpassorBandreject(Notch)Filters:LTC1068-200,0.5Hzto15kHz;LTC1068,1Hzto30kHz;LTC1068-50,2Hzto30kHz;LTC1068-25,4Hzto140kHz2LTC1068SeriesAUGWAWUWARBSOLUTEXITISTotalSupplyVoltage(V+toV–)..............................12VPowerDissipation.............................................500mWInputVoltageatAnyPin....V––0.3V≤VIN≤V++0.3VStorageTemperatureRange.................–65°Cto150°COperatingTemperatureRangeLTC1068C................................................0°Cto70°CLTC1068I...........................................–40°Cto85°CLeadTemperature(Soldering,10sec)..................300°C1234567891011121314TOPVIEWGPACKAGE28-LEADPLASTICSSOP2827262524232221201918171615INVBHPB/NBBPBLPBSBNCAGNDV+NCSALPABPAHPA/NAINVAINVCHPC/NCBPCLPCSCV–NCCLKNCSDLPDBPDHPD/NDINVDConsultfactoryforMilitarygradeparts.TJMAX=110°C,θJA=95°C/WLTC1068CNLTC1068IN123456789101112TOPVIEW242322212019181716151413INVBHPB/NBBPBLPBSBAGNDV+SALPABPAHPA/NAINVAINVCHPC/NCBPCLPCSCV–CLKSDLPDBPDHPD/NDINVDNPACKAGE24-LEADPDIPTJMAX=110°C,θJA=65°C/WORDERPARTNUMBERORDERPARTNUMBERLTC1068CGLTC1068CG-200LTC1068CG-50LTC1068CG-25LTC1068IGLTC1068IG-200LTC1068IG-50LTC1068IG-25WUUPACKAGE/ORDERIFORATIOELECTRICALCHARACTERISTICSLTC1068(InternalOpAmps)VS=±5V,TA=25°V,unlessotherwisenoted.PARAMETERCONDITIONSMINTYPMAXUNITSOperatingSupplyVoltageRange3.14±5.5VVoltageSwingsVS=3.14V,RL=5k(Note2)l1.21.6VP-PVS=4.75V,RL=5k(Note3)l2.63.2VP-PVS=±5V,RL=5kl±3.4±4.1VOutputShort-CircuitCurrent(Source/Sink)VS=±4.75V17/6mAVS=±5V20/15mADCOpen-LoopGainRL=5k85dBGBWProductVS=±5V6MHzSlewRateVS=±5V10V/μsAnalogGroundVoltage(Note4)VS=5V,VoltageatAGND2.5V±2%V(Note1)3LTC1068SeriesELECTRICALCHARACTERISTICSLTC1068(CompleteFilter)VS=±5V,TA=25°V,unlessotherwisenoted.PARAMETERCONDITIONSMINTYPMAXUNITSClock-to-CenterFrequencyRatio(Note5)VS=4.75V,fCLK=1MHz,Mode1(Note3),100±0.3100±0.8%fO=10kHz,Q=5,VIN=0.5VRMS,l100±0.9%R1=R3=49.9k,R2=10kVS=±5V,fCLK=1MHz,Mode1,100±0.3100±0.8%fO=10kHz,Q=5,VIN=1VRMS,l100±0.9%R1=R3=49.9k,R2=10KClock-to-CenterFrequencyRatio,VS=4.75V,fCLK=1MHz,Q=5(Note3)l±0.25±0.9%Side-to-SideMatching(Note5)VS=±5V,fCLK=1MHz,Q=5l±0.25±0.9%QAccuracy(Note5)VS=4.75V,fCLK=1MHz,Q=5(Note3)l±1±3%VS=±5V,fCLK=1MHz,Q=5l±1±3%fOTemperatureCoefficient±1ppm/°CQTemperatureCoefficient±5ppm/°CDCOffsetVoltage(Note5)VS=±5V,fCLK=1MHz,VOS1l0±15mV(SeeTable1)(DCOffsetofInputInverter)VS=±5V,fCLK=1MHz,VOS2l±2±25mV(DCOffsetofFirstIntegrator)VS=±5V,fCLK=1MHz,VOS3l±5±40mV(DCOffsetofSecondIntegrator)ClockFeedthroughVS=±5V,fCLK=1MHz0.1mVRMSMaxClockFrequency(Note6)VS=±5V,Q≤2.0,Mode15.6MHzPowerSupplyCurrentVS=3.14V,fCLK=1MHz(Note2)l3.58mAVS=4.75V,fCLK=1MHz(Note3)l6.511mAVS=±5V,fCLK=1MHzl9.515mAPARAMETERCONDITIONSMINTYPMAXUNITSClock-to-CenterFrequencyRatio(Note5)VS=4.75V,fCLK=1MHz,Mode1(Note3),200±0.3200±0.8%fO=5kHz,Q=5,VIN=0.5VRMS,l200±0.9%R1=R3=49.9k,R2=10kVS=±5V,fCLK=1MHz,Mode1,200±0.3200±0.8%fO=5Hz,Q=5,VIN=1VRMS,l200±0.9%R1=R3=49.9k,R2=10KLTC1068-200(CompleteFilter)VS=±5V,TA=25°V,unlessotherwisenoted.PARAM