## DORIC: Design of Optimal Robust Integrated Circuits (1993)

Venue: | in Proc. IEEE CICC |

Citations: | 3 - 0 self |

### BibTeX

@TECHREPORT{Daoud93doric:design,

author = {Zeina Daoud and Costas J. Spanos},

title = {DORIC: Design of Optimal Robust Integrated Circuits},

institution = {in Proc. IEEE CICC},

year = {1993}

}

### OpenURL

### Abstract

An interactive IC design methodology aimed at making designs less sensitive to manufacturing variations is presented, as well as a CAD tool to support it. The methodology, based on Taguchi's Robust Design Method, is shown to improve the performance and robustness of basic analog circuits. 1.0 Introduction The Robust Design Method is a technique aimed at designing high quality products at low cost. It is based on optimizing performance, manufacturability and cost by varying certain decision variables, in order to make the product less sensitive to manufacturing imperfections. Previously, IC variations were studied either in an ad hoc fashion or with a large number of simulations, which often led to long and expensive design cycles. Using a mathematical tool called orthogonal arrays, the Robust Design Method explores many variables in a small number of trials. The developed computer-aided design tool, DORIC (Design of Optimal & Robust Integrated Circuits) allows the user to study the e...

### Citations

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Citation Context ...bust Design Method (RDM) exploits the non-linearity of this dependence to find a set of design parameter values that cause the smallest deviation of the quality characteristic from its desired target =-=[10]-=-. Applied in the context of circuit design, this method does not explicitly try to define the region of acceptability, but instead tries to find an improved setting within that region. It explores onl... |

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Citation Context ...e subject of tolerance design of integrated circuits was first studied in the early 1970s [1]. By the early 1980s, two main techniques had emerged: a deterministic approach and a statistical approach =-=[2]. Both tec-=-hniques are concerned with determining the "region of acceptability" of a given design. The region of acceptability of a design is defined as a mapping of the specifications onto the compone... |

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Citation Context ... given design. The region of acceptability of a design is defined as a mapping of the specifications onto the component parameter space. Deterministic approaches, such as the simplicial approximation =-=[3]-=-, try to define the boundaries of that region. Statistical methods, on the other hand, focus on a rough estimation of the acceptability region, or at least the direction of parameter changes necessary... |

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Citation Context ...nality of the design space. Early efforts in the area of Design for Manufacturability (DFM) have focused on modeling the effects of the variability of manufacturing parameters on circuit performances =-=[5]-=-[6][7] and drawing conclusions about yield prediction. The i-EDISON [8] approach tries to optimize the design automatically. Multi-objective optimization with subjective trade-offs, common in actual c... |

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Citation Context ...ity of the design space. Early efforts in the area of Design for Manufacturability (DFM) have focused on modeling the effects of the variability of manufacturing parameters on circuit performances [5]=-=[6]-=-[7] and drawing conclusions about yield prediction. The i-EDISON [8] approach tries to optimize the design automatically. Multi-objective optimization with subjective trade-offs, common in actual circ... |

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Citation Context ...on. Statistical methods, on the other hand, focus on a rough estimation of the acceptability region, or at least the direction of parameter changes necessary to move towards the center of that region =-=[4]-=-. Both methods require intensive computational capabilities, and their complexity increases steeply with the dimensionality of the design space. Early efforts in the area of Design for Manufacturabili... |

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Citation Context ... of the design space. Early efforts in the area of Design for Manufacturability (DFM) have focused on modeling the effects of the variability of manufacturing parameters on circuit performances [5][6]=-=[7]-=- and drawing conclusions about yield prediction. The i-EDISON [8] approach tries to optimize the design automatically. Multi-objective optimization with subjective trade-offs, common in actual circuit... |

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Citation Context ...ufacturability (DFM) have focused on modeling the effects of the variability of manufacturing parameters on circuit performances [5][6][7] and drawing conclusions about yield prediction. The i-EDISON =-=[8]-=- approach tries to optimize the design automatically. Multi-objective optimization with subjective trade-offs, common in actual circuit designs, has not addressed. The organization of this paper is as... |

1 |
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Citation Context ...optimal setting of the decision variables that maximizes design robustness without sacrificing performance. The subject of tolerance design of integrated circuits was first studied in the early 1970s =-=[1]. By the e-=-arly 1980s, two main techniques had emerged: a deterministic approach and a statistical approach [2]. Both techniques are concerned with determining the "region of acceptability" of a given ... |

1 |
HSPICE Users Manual H9001
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Citation Context ...rthogonal array needed to represent the problem. The problem is then internally stated and submitted to the core. The core is formed of two modules: the circuit simulation execution (by calling HSICE =-=[11]-=-) and the RDM analysis. Upon completion of the analysis, the results in the form of factor-effect plots are presented to the user through a graphical post-processor. The user is prompted by the back e... |