Title :
Optimizing Resistances and Capacitances of a Continuous-Time ΣΔ ADC
Author :
De Lamarre, Laurent ; Louërat, Marie-Minerve ; Kaiser, Andreas
Author_Institution :
Univ. Pierre et Marie Curie, Paris
Abstract :
The integration capacitor is an important issue when being faced with the power consumption of a ΣΔ analog-to-digital converter. In this paper, we show how the integration capacitance can be derived from signal to noise ratio specifications. In order to decrease the total power consumption of the ΣΔ modulator, a method that optimizes the value of the integrator stage capacitors in the modulator loop filter is proposed.
Keywords :
capacitors; continuous time filters; modulators; sigma-delta modulation; analog-to-digital converter; continuous-time ΣΔ ADC; integration capacitor; integrator stage capacitors; modulator loop filter; power consumption; signal to noise ratio specification; Capacitance; Capacitors; Circuits; Costs; Delay; Energy consumption; Filtering; Filters; Optimization methods; Signal to noise ratio;
Conference_Titel :
Electronics, Circuits and Systems, 2006. ICECS '06. 13th IEEE International Conference on
Conference_Location :
Nice
Print_ISBN :
1-4244-0394-4
Electronic_ISBN :
1-4244-0395-2
DOI :
10.1109/ICECS.2006.379814
