Transcription of CIC 1.SpectreRF Overview
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Overview SpectreRF is an optional feature added to Spectre ,and isrepresented by6 : Periodic Steady State : Periodic AC : Periodic Transfer Function : Periodic Noise AnalysisTdnoise: Time Domain NoiseQPNOISE: Quasi-Periodic Noise (not discuss here) : Periodic Distortion AnalysisQPSS: Quasi-Periodic Steady State (not discuss here) analysis (not discuss here)PAC, PXF, and PNOISE are similar in concept to AC, XF, and , they are applied to periodically-driven circuits such as mixers in a Design FlowSchematicModelsThe netlists include allcomponents along with ananalysis selection, simulationcontrols and statements to save,plot nodes or Direct plot or theCalculator plot ControlDesignNetlistAnalog Artist EnvironmentAnalog Artist Plot ResultsSPECTRE EngineCIC1-3 SpectreRF Tool FlowPSS is a large-signal analysisand determines the period ofthe small-signal requires that multipleperiodic stimuli is also a large-signal analysis , and need notto be run after a PSSanalysis.
• The suggested settings are recommended for IP3 Analysis, Noise Analysis, or wherever high accuracy is needed. • Choose the gear2only integration method. The default trap integration Method trap gear2only iabstol 1e-12 1e-13 vabstol 1e-6 3e-8 reltol 1e-3 1e-5 Parameter Defaults Suggested Settings conservative x0.1 alllocal gear2only <0.1 ...
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