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Table-based modeling of delta-sigma modulators using ZSIM

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5 Author(s)
Brauns, G.T. ; North Carolina State Univ., Raleigh, NC, USA ; Bishop, Richard J. ; Steer, M.B. ; Paulos, J.J.
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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

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Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on  (Volume:9 ,  Issue: 2 )