SynFox HIGH RESOLUTION Frac-N SYNTHESIZER

REV. 1.8 1SynFoxHIGH RESOLUTIONFrac-N SYNTHESIZERSynFox is a high performance dual synthesizer modulebased on High Resolution Multi-Accumulator Fractional-N synthesis technology and comprising a narrow band950MHz-1050MHz and a wide band 800MHz-2GHz fastand ultra low noise loop (standard configuration).Frequency plan can be extended from 0 to 3 GHz oncustomer request.It exhibits outstanding performance of high resolution (1Hzsteps), low phase noise (Better than -100dBc/Hz @ 1kHz)and very short lock times (40us for 1MHz step). It includesall the necessary circuitry to support FM/GMSK Dual portmodulation from the narrowband PLL as well as generate 4output clocks from the main crystal (/1, /2, /4, /8).This module is ideally fitted for various radio productdesigns, ranging from low cost RF generator, to spectrumanalyzer, high accuracy sources, or Software DefinableRadio (SDR) transceivers. It provides a very attractivereplacement for DDS based systems at much reduced costfor equivalent or better performance.SynFox Highlights• Dual Frac-N synthesizers 0-3GHz• Outstanding 1Hz resolution thanksto Sigma Delta Frac-N technology• best in class resolution (1Hz),phase noise & lock time• Programming support available forvarious µC, Windows, or Linux• High performance & Low Costalternative to DDS-basedsynthesizers & generatorsAPPLICATIONS : RF GENERATORS, SPECTRUM ANALYZERS, SOFTWARE DEFINABLERADIOS, HIGH ACCURACY RF and MICROWAVE SOURCESOrder Entry :Metal housing versionPart number packaging descriptionSynFox-0.8/2-1GPCBMetal HousingOne wide band loop 0.8 to 2GHzOne Narrow loop 950 to1050MHz)SynFox-0.8/2-G Metal Housing One single 0.8 to 2GHz LoopSynFox-x/x-xGMetal HousingUpon customer requestFrequency plan on demand from0 to 3GHZ either in single loopor dual loop configurationSigFoxhttp://www.sigfox-system.com/ - infos@sigfox-system.com

REV. 1.8 2SPECIFICATIONSWide band SynthesizerParameter Unit Value CommentMinimum frequency MHz 800Maximum frequency MHz 2000Minimum frequencystepHz 1.16 1 Hz software interpolationAll other kind of steps configurableby SoftwareReference frequency MHz 26Output power dBm 10Phase Noise dB/ Hz Typ : -105 dBc / Hz Within the loop bandwidthDiscrete Spurious dBc -80 ∆F > 600 KHzKvco MHz / V 40 to 60Loop filter bandwidth KHz 200Settling time µs 500 typ 10 MHz stepTests mode - Force Up, DownAccumulatornumberCurrent reductionDecade tuningMin or Max frequency.0, 1, 2 or 3 accumulators.Current / Max. freq. Reduction.Possibility to tune ‘decade’frequency.Auxiliary Synthesizer with FM / GMSK / Dual Port modulationParameter Unit Value CommentMinimum frequency MHz 950Maximum frequency MHz 1050Minimum frequencystepHz 1.55 1 Hz software interpolationAll other kind of steps configurableby SoftwareReference frequency MHz 26Output power dBm 8Phase Noise dB/ Hz Typ : -105 dBc / Hz Within the loop bandwidthDiscrete Spurious dBc -79 ∆F > 600 KHzLoop filter bandwidth KHz 150Settling time µs 100 max 100 MHz stepTotal phase Errorwith internal GMSKModulation mask @400 KHz for typicalGSM modulation(GMSK)deg 1.2 max Can also easily be modulatedthrough the crystal within a 0 to 100KHz BWdBc-70 dBcN/AN/APLL Tests mode - ModulationAccumulatornumberCharge-pumpCurrent CurrentreductionNotchDual Port test - DP-Gain, DP-Delayand DP-Gain-anaWith the Dual PortWithout the Dual PortDual Port aloneRandom, ‘0101’, or High-Z0, 1, 2 or 3 accumulators.From 0 to 600µACurrent / Max. Freq. Reduction.Phase noise reduction @ 400 KHzFor Dual Port optimizationSigFoxhttp://www.sigfox-system.com/ - infos@sigfox-system.com

REV. 1.8 3Output CLOCKsParameter Unit Value CommentClocks number - 1 from 4 on the ICMode - ON, OFF (high-Z)Analog or DigitalCMOSDivision ratio - 1, 2, 4 or 8Clock output voltage Vpp 1Logic_VCCAnalog mode (sinewave)CMOS mode (square)Clock output meanvalueV Logic_VCC / 2 0.9 V if Logic_VCC = 1.8VFiltering - - Internal lowpassPhysical parametersParameter Unit Value CommentPCB dimensions mm 105 x 59 Max dimensionsInterface connector - SubD 25 compatible Male connector must be mounted forPC Centronic compatibilityRF outputs - Connector or cable Compatible with PCB mountedSMA, BNC or 50 Ohms cablesSigFoxhttp://www.sigfox-system.com/ - infos@sigfox-system.com