Analysis and Design of Analog Integrated Circuits
Analysis and Design of Analog Integrated Circuits
Feedback Control of Dynamic Systems
Feedback Control of Dynamic Systems
Proceedings of the 2004 IEEE/ACM International conference on Computer-aided design
Proceedings of the 2005 Asia and South Pacific Design Automation Conference
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
PPV-HB: harmonic balance for oscillator/PLL phase macromodels
Proceedings of the 2006 IEEE/ACM international conference on Computer-aided design
Smoothed form of nonlinear phase macromodel for oscillators
Proceedings of the 2008 IEEE/ACM International Conference on Computer-Aided Design
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We present a novel methodology suitable for fast, correct design of modern PLLs. The central feature of the methodology is its use of accurate, nonlinear behavioral models for the VCO within the PLL, thus removing the need for many time-consuming SPICE-level simulations during the design process. We apply the new methodology to design a novel injection-aided PLL that acquires lock 3 x faster than prior designs, without trading off other design metrics such as jitter. We demonstrate how existing design methodologies based on behavioral simulation are incapable of leading to our new PLL design. The nonlinear behavioral simulations employed in our methodology are about 2 orders of magnitude faster than transistor-level ones, resulting in an overall design productivity gain of an order of magnitude.