Title :
A 9th-order continuous time ΣΔ-ADC with x-coupled differential single-opamp resonators
Author :
Zeller, Sebastian ; Muenker, Christian ; Weigel, Robert
Author_Institution :
Univ. of Appl. Sci. Munich, Munich, Germany
Abstract :
Continuous time Sigma-Delta-ADCs are usually designed with noise transfer functions containing conjugate complex zeros to extend the usable bandwidth. Traditionally, these zeros are implemented with a resonance generated by feedback around two integrator opamps.
Keywords :
continuous time systems; differential amplifiers; integrating circuits; operational amplifiers; poles and zeros; sigma-delta modulation; transfer functions; 9th-order continuous time ΣΔ-ADC; conjugate complex zeros; continuous time sigma-delta-ADC; integrator opamps; noise transfer functions; usable bandwidth; x-coupled differential single-opamp resonators; Modulation;
Conference_Titel :
Circuits and Systems (MWSCAS), 2011 IEEE 54th International Midwest Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-61284-856-3
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2011.6026508
