Table-based simulation of delta-sigma modulators

Author

Bishop, Richard J. ; Paulos, John J. ; Steer, Michael B. ; Ardalan, Sasan Houston

Author_Institution

Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA

Volume

37

Issue

3

fYear

1990

fDate

3/1/1990 12:00:00 AM

Firstpage

447

Lastpage

451

Abstract

The program ZSIM (nonlinear Z-domain simulator) is used to explore the benefits and limitations of a table-based approach to the simulation of delta-sigma modulators with switched-capacitor integrators. Simulations demonstrating the effects of clock feedthrough and incomplete settling are presented, as are simulations demonstrating the importance of using an accurate and charge-conservative circuit simulator for the table point transient simulations. The methods used are appropriate for other discrete-time systems where simulation of system-level performance based on the results of transient circuit simulation is desired

Keywords

analogue-digital conversion; circuit analysis computing; integrating circuits; modulators; switched capacitor networks; transient response; A/D convertors; ADC; ZSIM; charge-conservative circuit simulator; clock feedthrough; delta-sigma modulators; discrete-time systems; incomplete settling; nonlinear Z-domain simulator; oversampling; switched-capacitor integrators; system-level performance; table point transient simulations; table-based simulation; transient circuit simulation; Circuit simulation; Circuit stability; Circuits and systems; Clocks; Delta modulation; Low pass filters; Modulation coding; Pulse modulation; Sampling methods; Switching circuits;

fLanguage

English

Journal_Title

Circuits and Systems, IEEE Transactions on

Publisher

ieee

ISSN

0098-4094

Type

jour

DOI

10.1109/31.52741

Filename

52741