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Computeraided design of analog and mixedsignal integrated circuits
 PROCEEDINGS OF THE IEEE
, 2000
"... This survey presents an overview of recent advances in the state of the art for computeraided design (CAD) tools for analog and mixedsignal integrated circuits (ICs). Analog blocks typically constitute only a small fraction of the components on mixedsignal ICs and emerging systemsonachip (SoC) ..."
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Cited by 81 (13 self)
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This survey presents an overview of recent advances in the state of the art for computeraided design (CAD) tools for analog and mixedsignal integrated circuits (ICs). Analog blocks typically constitute only a small fraction of the components on mixedsignal ICs and emerging systemsonachip (SoC) designs. But due to the increasing levels of integration available in silicon technology and the growing requirement for digital systems to communicate with the continuousvalued external world, there is a growing need for CAD tools that increase the design productivity and improve the quality of analog integrated circuits. This paper describes the motivation and evolution of these tools and outlines progress on the various design problems involved: simulation and modeling, symbolic analysis, synthesis and optimization, layout generation, yield analysis and design centering, and test. This paper summarizes the problems for which viable solutions are emerging and those which are still unsolved.
Predicting the Phase Noise and Jitter of PLLBased Frequency Synthesizers. www.designersguide.com
, 2003
"... Version 4g, August 2006 Two methodologies are presented for predicting the phase noise and jitter of a PLLbased frequency synthesizer using simulation that are both accurate and efficient. The methodologies begin by characterizing the noise behavior of the blocks that make up the PLL using transisto ..."
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Cited by 37 (2 self)
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Version 4g, August 2006 Two methodologies are presented for predicting the phase noise and jitter of a PLLbased frequency synthesizer using simulation that are both accurate and efficient. The methodologies begin by characterizing the noise behavior of the blocks that make up the PLL using transistorlevel RF simulation. For each block, the phase noise or jitter is extracted and applied to a model for the entire PLL.
Design of mixedsignal systemsonachip
 IEEE Trans. Comput. Aided Design Integr. Circuits Syst
, 2000
"... Abstract—The electronics industry is increasingly focused on the consumer marketplace, which requires lowcost highvolume products to be developed very rapidly. This, combined with advances in deep submicrometer technology have resulted in the ability and the need to put entire systems on a single ..."
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Cited by 23 (2 self)
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Abstract—The electronics industry is increasingly focused on the consumer marketplace, which requires lowcost highvolume products to be developed very rapidly. This, combined with advances in deep submicrometer technology have resulted in the ability and the need to put entire systems on a single chip. As more of the system is included on a single chip, it is increasingly likely that the chip will contain both analog and digital sections. Developing these mixedsignal (MS) systemsonchip presents enormous challenges both to the designers of the chips and to the developers of the computeradided design (CAD) systems that are used during the design process. This paper presents many of the issues that act to complicate the development of large singlechip MS systems and how CAD systems are expected to develop to overcome these issues. Index Terms—Design automation, design methodology, hardware design languages, integrated circuit layout, integrated circuit modeling, mixed analogdigital integrated circuits, simulation, testing. I.
Noise in Mixers, Oscillators, Samplers, and Logic: An Introduction to Cyclostationary Noise
, 2000
"... The origins and characteristics of cyclostationary noise are described in a way that allows designers to understand the impact of cyclostationarity on their circuits. In particular, cyclostationary noise in timevarying systems (mixers), sampling systems (switched filters and sample/holds), threshol ..."
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Cited by 22 (8 self)
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The origins and characteristics of cyclostationary noise are described in a way that allows designers to understand the impact of cyclostationarity on their circuits. In particular, cyclostationary noise in timevarying systems (mixers), sampling systems (switched filters and sample/holds), thresholding systems (logic circuitry), and autonomous systems (oscillators) is discussed.
A design methodology for highlyintegrated lowpower receivers for wireless communications
, 2001
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CAD solutions and outstanding challenges for mixedsignal and
 RF IC design, Proceedings of the IEEE/ACM International Conference on Computer Aided Design
"... This tutorial paper addresses the problems and solutions that are posed by the design of mixedsignal integrated systems on chip (SoC). These include problems in mixedsignal design methodologies and flows, problems in analog design productivity, as well as open problems in analog, mixedsignal and ..."
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Cited by 9 (1 self)
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This tutorial paper addresses the problems and solutions that are posed by the design of mixedsignal integrated systems on chip (SoC). These include problems in mixedsignal design methodologies and flows, problems in analog design productivity, as well as open problems in analog, mixedsignal and RF design, modeling and verification tools. The tutorial explains the problems that are posed by these mixedsignal/RF SoC designs, describes the solutions and their underlying methods that exist today and outlines the challenges that still remain to be solved at present. In the first part the design of analog and mixedsignal circuits is addressed, while the second part focuses on the specific problems raised by RF wireless circuits. 1
Simulation and analysis of random decision errors in clocked comparators
 IEEE Trans. Circuits Syst. I, Reg. Papers
, 2009
"... Abstract—Clocked comparators have found widespread use in noise sensitive applications including analogtodigital converters, wireline receivers, and memory bitline detectors. However, their nonlinear, timevarying dynamics resulting in discrete output levels have discouraged the use of traditiona ..."
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Cited by 8 (0 self)
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Abstract—Clocked comparators have found widespread use in noise sensitive applications including analogtodigital converters, wireline receivers, and memory bitline detectors. However, their nonlinear, timevarying dynamics resulting in discrete output levels have discouraged the use of traditional linear timeinvariant (LTI) smallsignal analysis and noise simulation techniques. This paper describes a linear, timevarying (LTV) model of clock comparators that can accurately predict the decision error probability without resorting to more general stochastic system models. The LTV analysis framework in conjunction with the linear, periodically timevarying (LPTV) simulation algorithms available from RF circuit simulators can provide insights into the intrinsic sampling and decision operations of clock comparators and the major contribution sources to random decision errors. Two comparators are simulated and compared with laboratory measurements. A 90nm CMOS comparator is measured to have an equivalent inputreferred random noise of 0.73 mVrms for dc inputs, matching simulation results with a short channel excess noise factor . Index Terms—Circuit analysis, circuit noise, circuit simulation, comparators. I.
Computeraided design of RF and microwave circuits and systems
 IEEE TRANS. MICROWAVE THEORY TECH
, 2002
"... The history of RF and microwave computeraided engineering is documented in the annals of the IEEE Microwave Theory and Techniques Society. The era began with elaborate analytically based models of microwave components and simple computeraided techniques to cascade, cascode, and otherwise connect l ..."
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Cited by 8 (3 self)
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The history of RF and microwave computeraided engineering is documented in the annals of the IEEE Microwave Theory and Techniques Society. The era began with elaborate analytically based models of microwave components and simple computeraided techniques to cascade, cascode, and otherwise connect linear component models to obtain the responses of linear microwave circuits. Development has become rapid with today’s computeroriented microwave practices addressing complex geometries and with the ability to globally model and optimize large circuits. The pursuit of accurate models of active devices and of passive components continues to be a key activity.
Modeling Jitter in Pllbased Frequency Synthesizers
, 2003
"... A methodology is presented for modeling the jitter in a PhaseLocked Loop (PLL) that is both accurate and efficient. The methodology begins by characterizing the noise behavior of the blocks that make up the PLL using transistorlevel simulation. For each block, the jitter is extracted and provided ..."
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Cited by 6 (1 self)
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A methodology is presented for modeling the jitter in a PhaseLocked Loop (PLL) that is both accurate and efficient. The methodology begins by characterizing the noise behavior of the blocks that make up the PLL using transistorlevel simulation. For each block, the jitter is extracted and provided as a parameter to behavioral models for inclusion in a highlevel simulation of the entire PLL. This approach is efficient enough to be applied to PLLs acting as frequency synthesizers with large divide ratios.
A multiinterval Chebyshev collocation method for efficient highaccuracy RF circuit simulation
 Proc. DAC
, 2000
"... Most RF circuit analysis tools use either shootingNewton or harmonic balance methods. Neither can efficiently achieve high accuracy on strongly nonlinear circuits possessing waveforms with rapid transitions. We present a multiintervalChebyshev (MIC) method that discretizes the circuit equations b ..."
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Cited by 6 (3 self)
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Most RF circuit analysis tools use either shootingNewton or harmonic balance methods. Neither can efficiently achieve high accuracy on strongly nonlinear circuits possessing waveforms with rapid transitions. We present a multiintervalChebyshev (MIC) method that discretizes the circuit equations by dividing the simulation domain into a set of intervals whose size is adaptively chosen and using Chebyshev polynomials to represent the solution in each interval. The MIC method has excellent stability properties, is as effective at solving nonlinear problems as shooting techniques, can achieve high resolution on a wide variety of circuits, and in conjunction with an appropriate preconditioner can be combined with matriximplicit Krylovsubspace solvers to analyze large circuits with moderate computational cost.