Common-centroid capacitor placement considering systematic and random mismatches in analog integrated circuits

Cheng Wu Lin, Jai-Ming Lin, Yen Chih Chiu, Chun Po Huang, Soon-Jyh Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

27 Citations (Scopus)

Abstract

One of the most important issues during the analog layout phase is to achieve accurate capacitance ratios. However, systematic and random mismatches will affect the accuracy of the capacitance ratios. A common-centroid placement is helpful to reduce the systematic mismatch, but it still needs the property of high dispersion to reduce the random mismatch [10]. To deal with this problem, we propose a simulated annealing [15] based approach to construct a common-centroid placement which exhibits the highest possible degree of dispersion. To facilitate this framework, we first propose the pair-sequence representation to represent a common-centroid placement. Then, we present three operations to perturb the representation, which can increase the degree of dispersion without breaking the common-centroid constraint in the resulting placement. Finally, to enhance the efficiency of our simulated annealing based approach, we propose three techniques to speed up our program. The experimental results show that our placements can simultaneously achieve smaller oxide-gradient-induced mismatch and larger overall correlation coefficients (i.e., higher degree of dispersion) than [10] in all test cases. Besides, our program can run much faster than [10] in larger benchmarks.

Original languageEnglish
Title of host publication2011 48th ACM/EDAC/IEEE Design Automation Conference, DAC 2011
Pages528-533
Number of pages6
Publication statusPublished - 2011
Event2011 48th ACM/EDAC/IEEE Design Automation Conference, DAC 2011 - San Diego, CA, United States
Duration: 2011 Jun 52011 Jun 9

Other

Other2011 48th ACM/EDAC/IEEE Design Automation Conference, DAC 2011
CountryUnited States
CitySan Diego, CA
Period11-06-0511-06-09

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Modelling and Simulation

Fingerprint Dive into the research topics of 'Common-centroid capacitor placement considering systematic and random mismatches in analog integrated circuits'. Together they form a unique fingerprint.

Cite this