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元器件交易网www.cecb2b.com MOTOROLA SEMICONDUCTORTECHNICALDATA VoltageControlledOscillatorConsiderMC12148forNew Designs TheMC1648requiresanexternalparalleltankcircuitconsistingoftheinductor(Landcapacitor(C.ForMaximumPerformanceQL≥100at FrequencyofOperation. Avaractordiodemaybeincorporatedintothetankcircuittoprovideavoltagevariableinputfortheoscillator(VCO.TheMC1648wasdesignedforuseintheMotorolaPhase–LockedLoopshowninFigure9.Thisdevicemayalsobeusedinmanyotherapplicationsrequiringafixedorvariablefrequencyclocksourceofhighspectralpurity.(SeeFigure2TheMC1648maybeoperatedfroma+5.0Vdcsupplyora–5.2Vdc supply,dependinguponsystemrequirements. NOTE: TheMC1648isNOTuseableasacrystaloscillator. Pinout:14–LeadPackage (TopView VCC 14 NC 13 TANK 12 NC 11 BIAS 10 NC 9 VEE 8 MC1648 VOLTAGECONTROLLED OSCILLATOR LSUFFIX 14–LEADCERAMICPACKAGE CASE632–08 NotRecommendedforNewDesigns 1V CC 2 NC 3 OUT 4 NC 5 AGC 6 NC 7V EE PSUFFIX 14–LEADPLASTICPACKAGE CASE646–06 PinassignmentisforDual–in–LinePackage. ForPLCCpinassignment,seetheMC1648Non–StandardPinConversionTablebelow. MC1648NON–STANDARDPINCONVERSIONDATA Package8D 14L,P TANK1 12 VCC2 14 VCC3 1 OUT4 3 AGC55 8 VEE67 10 VEE78 12 BIAS810 14 DSUFFIX 8–PINPLASTICSOICPACKAGE CASE751–05 20FN182024 *NOTE–Allunusedpinsarenotconnected. SupplyVoltage +5.0Vdc –5.2Vdc GNDPins 7,8 1,14 SupplyPins 1,14 7,8 FNSUFFIX 20–LEADPLCCPACKAGE CASE775–02 LOGICDIAGRAM BIASPOINT10 TANK12 3 OUTPUT ••• • InputCapacitance=6.0pF(TYP MaximumSeriesResistanceforL(ExternalInductance=50Ω(TYPPowerDissipation=150mW(TYP/Pkg(+5.0VdcSupply MaximumOutputFrequency=225MHz(TYP 5 AGC VCC1=Pin1VCC2=Pin14VEE =Pin7 1/97 © Motorola,Inc.1997 1 REV2
元器件交易网www.cecb2b.com MC1648 VCC2 14 VCC1 1 Q9 Q3 Q2 Q1 3 OUTPUT Q4 Q11 Q10 Q7 Q6 D1 Q5 D2 Q8 7V EE1 10BIAS POINT 12 TANK 8V EE 5 AGC Figure1.CircuitSchematic TESTVOLTAGE/CURRENTVALUES @Test Temperature (Volts VIHmax MC1648 –30°C+25°C+85° C +2.0+1.85 +1.7 +1.5+1.35 +1.2 +5.0+5.0 +5.0 –5.0–5.0 –5.0 V ILmin V CC mAdcI L Note:SOIC“D”packageguaranteed–30°Cto+70° Conly ELECTRICALCHARACTERISTICS (SupplyVoltage=+5.0V –30° C SymbolIEVOHVOLVBIAS1VP–P Vdc Characteristic PowerSupplyDrainCurrentLogic“1”OutputVoltageLogic“0”OutputVoltage BiasVoltage Min–3.9553.161.6 Min Peak–to–PeakTankVoltage OutputDutyCycle – – Typ––Max–4.1853.41.9Max– – +25°CMin–4.043.21.45Min– – Max414.253.431.75Typ400 50 Max– – +85°CMin–4.113.221.3Min– – Max–4.363.4751.6Typ– – Unit mAdc Condition InputsandoutputsopenVILmintoPin12,IL@Pin3VIHmaxtoPin12,IL@Pin3VILmintoPin12UnitmV % Condition SeeFigure3 VdcVdcVdcMax– – fmax2OscillationFrequency–225–200225––225– MHz 1.Thismeasurementguaranteesthedcpotentialatthebiaspointforpurposesofincorporatingavaractortuningdiodeatthispoint.2.Frequencyvariationovertemperatureisadirectfunctionofthe∆C/∆Temperatureand∆L/∆ Temperature. MOTOROLA 2 HIPERCOMM BR1334—Rev4
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