Transcription of AN100 - Crystal Selection Guide (Rev. C) - TI.com
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ApplicationReportSWRA372C November2013AN100- CrystalSelectionGuideFredrikKervelABSTRA CTRF systemsare highlydependenton accurateclocksfor deviationin clockfrequencyis directlyreflectedas a deviationin degradeRF performance,violatelegalrequirementsor in worstcaselead to a scopeof this applicationreportis to give the designengineera quickguideon how to design,tuneand verifythe clockcircuitfor TI s list of suggestedcrystalsthat can be usedwithCC253xand CC254xis designermustpick a crystalthat satisfiestheirrequirementsonsize,toleran ceand othercrystalsare to be used,fundamentalmode,AT cut crystalsis highlyrecommendeddue to accuracyand easeof of AddedSeriesResistance[FA-128on CC2540EM].
C ' x ' ' 1 2 ' ' 1 2 C C C L C C = + g Crystal Oscillator Theory www.ti.com 1 Crystal Oscillator Theory 1.1 Oscillator Operation The circuit used as high frequency, high accuracy clock source for TI’s low power RF products is called a
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