Hierarchical Simulation of Substrate Coupling in BiCMOS Structures Using the Boundary Element Method
A novel substrate coupling simulation tool named SubCALM is presented. It is well suited to floorplanning of large mixed-signal designs since it exploits the boundary element method and contains a Poisson solver based on a hierarchical O(n) conjugate gradient algorithm. Sophisticated preconditioners are applied, which further increase the computation speed by a factor of about 10. The approach is verified by experimental results in a 0.25 μm BiCMOS technology.
KeywordsBoundary Element Method Injection Point Guard Ring Admittance Matrix Poisson Solver
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- 1.Singh, R. (Ed): Signal Integrity Effects in Custom IC and ASIC Designs. Wiley Interscience (2002)Google Scholar
- 4.Verghese, N. K., Schmerbeck, T. J., Allstot, D.J.: Simulation Techniques and Solutions for Mixed-Signal Coupling in Integrated Circuits. Kluwer Academic Publishers (1995)Google Scholar
- 8.Kapur, S., Long, D.E.: IES3: A Fast Integral Equation Solver for Efficient 3-Dimensional Extraction. Int. Conf. on CAD (ICCAD) (1997) 448–455Google Scholar
- 9.Appel, A. W.: An Efficient Program for Many-Body Simulation. SIAM J. Sci. Stat. Comp. 6(1) (1985) 85–103Google Scholar
- 12.Brandtner, T., Weigel, R.: Hierarchical Simulation of Substrate Coupling in Mixed-Signal ICs Considering the Power Supply Network. DATE Conf. (2002) 1028–1032Google Scholar