Robust analog/RF circuit design with projection-based performance modeling

Journal Article (Journal Article)

In this paper, a robust analog design (ROAD) tool for posttuning (i.e., locally optimizing) analog/RF circuits is proposed. Starting from an initial design derived from hand analysis or analog circuit optimization based on simplified models, ROAD extracts accurate performance models via transistor-level simulation and iteratively improves the circuit performance by a sequence of geometric programming steps. Importantly, ROAD sets up all design constraints to include large-scale process and environmental variations, thereby facilitating the tradeoff between yield and performance. A crucial component of ROAD is a novel projectionbased scheme for quadratic (both polynomial and posynomial) performance modeling, which allows our approach to scale well to large problem sizes. A key feature of this projection-based scheme is a new implicit power iteration algorithm to find the optimal projection space and extract the unknown model coefficients with robust convergence. The efficacy of ROAD is demonstrated on several circuit examples. © 2007 IEEE.

Full Text

Duke Authors

Cited Authors

  • Li, X; Gopalakrishnan, P; Xu, Y; Pileggi, LT

Published Date

  • January 1, 2007

Published In

Volume / Issue

  • 26 / 1

Start / End Page

  • 2 - 15

International Standard Serial Number (ISSN)

  • 0278-0070

Digital Object Identifier (DOI)

  • 10.1109/TCAD.2006.882513

Citation Source

  • Scopus