Title :
Table-based modeling of delta-sigma modulators using ZSIM
Author :
Brauns, Gregory T. ; Bishop, Richard J. ; Steer, Michael B. ; Paulos, J.J. ; Ardalan, Sasan Houston
Author_Institution :
North Carolina State Univ., Raleigh, NC, USA
fDate :
2/1/1990 12:00:00 AM
Abstract :
ZSIM, a nonlinear Z-domain simulator for sampled-data systems, is presented and verified. ZSIM integrates analytic tools, a difference equation simulator, a table-based nonlinear Z-domain simulator, and digital signal processing into a workstation environment to provide fast and accurate simulation of delta-sigma modulators. The use of table-based simulation allows simulation of circuit nonidealities including clock feedthrough and saturation. Benchmark comparisons of difference equation simulations and table-based simulations are presented for delta-sigma modulators suitable for use in voice-band coders
Keywords :
circuit analysis computing; modulators; nonlinear network analysis; software packages; ZSIM; analytic tools; circuit nonidealities; clock feedthrough; delta-sigma modulators; difference equation simulator; digital signal processing; nonlinear Z-domain simulator; sampled-data systems; saturation; table-based modelling; voice-band coders; workstation environment; Analytical models; Circuit simulation; Clocks; Delta modulation; Difference equations; Digital modulation; Digital signal processing; Modulation coding; Signal analysis; Workstations;
Journal_Title :
Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on
