Title :
Analysis and simulation of distortion in folding and interpolating A/D converters
Author :
Limotyrakis, Sotirios ; Nam, KiYoung ; Wooley, Bruce A.
Author_Institution :
Center for Integrated Syst., Stanford Univ., CA, USA
fDate :
3/1/2002 12:00:00 AM
Abstract :
A method for analyzing distortion in a complementary metal-oxide-semiconductor (CMOS) analog-to-digital (A/D) converter with continuous-time folding and interpolation is presented. Distortion resulting from limited bandwidth at the output of the folders, interpolation at the output of the folders, and comparator offset are considered. Simulation results are presented for a range of architectural configurations, and means of extending the method to include the effect of other nonidealities are considered. The present analysis can be used to estimate distortion in A/D converters employing continuous-time folding and aid in the decision of whether to incorporate a track-and-hold circuit at the input of the converter
Keywords :
CMOS integrated circuits; Fourier series; analogue-digital conversion; circuit simulation; electric distortion; frequency-domain analysis; interpolation; transfer functions; CMOS ADC; comparator offset; continuous-time folding; distortion simulation; flash ADC; folding A/D converters; frequency domain calculations; interpolating A/D converters; limited bandwidth; nonidealities; square law I-V characteristic; track-and-hold circuit; transfer function; zero-crossings; Analog-digital conversion; Analytical models; Bandwidth; CMOS technology; Circuits; Delay; Frequency; Interpolation; Nonlinear distortion; Signal resolution;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
DOI :
10.1109/TCSII.2002.1013862
