Fast simulation of sigma-delta modulators using SPICE

Author

Xiaopeng Li ; Ismail, Mahamod

Author_Institution

VLSI Lab., Ohio State Univ., Columbus, OH

Volume

15

Issue

1

fYear

1999

fDate

1/1/1999 12:00:00 AM

Firstpage

7

Lastpage

9

Abstract

Presents a fast simulation method using SPICE. We traded the prohibitive time-consuming simulation problem for a much less time-consuming problem, plus a little analysis work. This makes it possible for one to use SPICE simulation to optimize the parameters in the modulator within a reasonable time period. Rounding and truncation errors within the circuit simulation algorithms typically set an upper limit on the measurable SNR on the order of 90 dB. This implies that very high-resolution modulators cannot correctly be simulated by SPICE. Fortunately, 90 dB resolution is adequate for most modern communication baseband A/D converters

Keywords

SPICE; circuit simulation; integrated circuit modelling; sigma-delta modulation; SPICE simulation; baseband A/D converters; circuit simulation algorithms; measurable SNR; rounding errors; sigma-delta modulators; simulation method; truncation errors; upper limit; Bandwidth; Delta-sigma modulation; Digital signal processing; Discrete Fourier transforms; Frequency; Intensity modulation; SPICE; Signal analysis; Testing; Transient analysis;

fLanguage

English

Journal_Title

Circuits and Devices Magazine, IEEE

Publisher

ieee

ISSN

8755-3996

Type

jour

DOI

10.1109/101.747561

Filename

747561