Evaluating RC-interconnect using moment-matching approximations

Author

Gopal, Nanda ; Neikirk, Dean P. ; Pillage, Lawrence T.

Author_Institution

Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA

fYear

1991

fDate

11-14 Nov. 1991

Firstpage

74

Lastpage

77

Abstract

The authors describes a relation for specifying the ´optimal´ number of lumped RC sections needed to approximate a distributed RC element for an estimated digital-signal bandwidth. The bandwidth approximation also aids in determining the order of the AWE (asymptotic waveform evaluation) approximation for the driving-point and transfer function models. Since moving to arbitrarily high orders of approximation to meet the bandwidth requirements is complicated by moment-matching instability problems, a constrained mapping from moments to dominant time constants is used which guarantees stability for RC interconnect models.<>

Keywords

circuit analysis computing; transfer functions; waveform analysis; RC-interconnect; asymptotic waveform evaluation; bandwidth approximation; digital-signal bandwidth; distributed RC element; dominant time constants; driving point model; lumped RC sections; moment-matching approximations; moment-matching instability; stability; transfer function models; Analytical models; Bandwidth; Circuit analysis computing; Circuit simulation; Delay effects; Integrated circuit interconnections; Integrated circuit modeling; Linear approximation; Propagation delay; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer-Aided Design, 1991. ICCAD-91. Digest of Technical Papers., 1991 IEEE International Conference on

Conference_Location

Santa Clara, CA, USA

Print_ISBN

0-8186-2157-5

Type

conf

DOI

10.1109/ICCAD.1991.185195

Filename

185195