Title :
Design considerations on very high resolution sigma-delta modulators
Author :
Brigati, S. ; Francesconi, F. ; Liberali, V. ; Maloberti, F. ; Malcovati, P. ; Poletti, M.
Author_Institution :
Micronova Sistemi S.r.l., Pavia, Italy
Abstract :
This paper describes theoretical limits and practical considerations concerning the design of high resolution (SNR>100 dB) sigma-delta A/D converters. By looking at a series of constraints affecting the design of basic devices and building blocks, we discuss important aspects of the theory of high-order single-loop modulators and find limitations to the maximum signal-to-noise ratio as a function of the power consumption and the sampling frequency. Moreover, starting from the theoretical results, we show how to optimize the modulator performance with behavioral simulations
Keywords :
circuit noise; modulators; sigma-delta modulation; thermal noise; 100 dB; A/D converters; behavioral simulations; high-order single-loop modulators; maximum SNR; power consumption; sampling frequency; sigma-delta modulators; signal-to-noise ratio; very high resolution ADC; Baseband; Circuit noise; Delta-sigma modulation; Energy consumption; Frequency; Noise level; Quantization; Sampling methods; Signal to noise ratio; Switches;
Conference_Titel :
Circuits and Systems, 1997. Proceedings of the 40th Midwest Symposium on
Conference_Location :
Sacramento, CA
Print_ISBN :
0-7803-3694-1
DOI :
10.1109/MWSCAS.1997.666089
