Title :
Mixed-mode simulation of a continuous-time ΣΔ ADC
Author :
Brown, James E C ; Alexander, Mark ; Bowers, Derek F.
Author_Institution :
Precision Monolithics Inc., Santa Clara, CA, USA
Abstract :
The use of the C programming language and a commercially available analog and digital (mixed-mode) circuit simulator in the design of a continuous-time multibit sigma-delta (ΣΔ) analog-to-digital converter (ADC) for integration is detailed. The use of the bilinear transformation to generate a discrete-time model of the ADC is shown with an implementation in C. The circuit simulator is introduced and its mixed-mode capabilities are discussed with another implementation of the ΣΔ ADC. Simulation data is analyzed with the fast Fourier transform (FFT) and compared with actual prototype data. Results indicate a good correlation between simulator and prototype performance
Keywords :
C listings; analogue-digital conversion; circuit analysis computing; C programming language; FFT; SABER; bilinear transformation; circuit simulator; continuous-time; discrete-time model; fast Fourier transform; mixed-mode capabilities; multibit type; sigma-delta ADC; Baseband; Circuit simulation; Computer languages; Delta-sigma modulation; Difference equations; Digital filters; Finite impulse response filter; Frequency; Signal to noise ratio; Transfer functions;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112065
