Accurate PLL Characterization Using Virtuoso Spectre RF Noise ...

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18 Using Spectre RF Noise-Aware PLL Methodology to Predict PLL Behavior Accurately Introduction Spectre RF Noise-Aware PLL Flow and Non-Linear VCO Modeling Advantages of SpectreRF flow versus other approaches Experimental results Conclusion September 17, 2007
19 • • • Strengths of SpectreRF Noise aware PLL flow Significantly decreases simulation time compared to a traditional spice/fast spice transient approach: – – Even simple PLLs can require 2-3weeks when simulating with traditional SPICE simulators. Complex PLLs can easily require 2-3 months. Provides accuracy comparable to a traditional spice transient approach: – The VCO dynamic behavior is fully captured by using a non linear model based on PPV. Supports both Integer-N and Fractional PLLs September 17, 2007
Page 1 and 2: INVENTIVE Using Spectre RF Noise-Aw
Page 3 and 4: 3 • • • Introduction Phase lo
Page 5 and 6: 5 Challenges of PLL Simulation •
Page 7 and 8: 7 V R Spectre RF Noise-Aware PLL Si
Page 9 and 10: 9 PLL Model Extraction Flow • •
Page 11 and 12: 11 September 17, 2007 PLL testbench
Page 13 and 14: 13 Non-Linear VCO Modeling • •
Page 15 and 16: 15 Effect of Noise and Perturbation
Page 17: 17 SpectreRF’s PPV-based VCO Mode
Page 21 and 22: 21 Using Spectre RF Noise-Aware PLL
Page 23 and 24: 23 September 17, 2007 PPV versus tr
Page 25 and 26: 25 PLL Noise-Aware Flow Experimenta
Page 27 and 28: 27 Conclusions • • • • Cade
Page 29 and 30: 29 References • • • • • [

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