Title :
Comb structures for Sigma-Delta ADCs with high even decimation factors
Author :
Molina Salgado, Gerardo ; Jovanovic Dolecek, Gordana ; de la Rosa, Jos M.
Author_Institution :
Dept. of Electron., Inst. INAOE, Puebla, Mexico
Abstract :
This paper analyses comb-based decimation structures for Sigma-Delta Analog-Digital Converters (ADCs), with high even decimation factors. The topology under study has two stages: the first stage is a non-recursive-comb and the second one is a CIC (Cascaded-Integrator-Comb) structure. As a result, efficient structures are identified in terms of the power consumption and silicon area. Additionally, alternative topologies are proposed to improve alias rejections of the analyzed decimator structures.
Keywords :
comb filters; sigma-delta modulation; CIC; analog-digital converters; cascaded-integrator-comb structure; comb-based decimation structure analysis; decimation filter; high even decimation factors; nonrecursive-comb; power consumption; sigma-delta ADCs; silicon area; Attenuation; Circuits and systems; Estimation; Modulation; Power demand; Sigma-delta modulation; Topology; Analog to Digital Conversion; CIC structure; decimation filter; sigma-delta modulation;
Conference_Titel :
Circuits and Systems (MWSCAS), 2014 IEEE 57th International Midwest Symposium on
Conference_Location :
College Station, TX
Print_ISBN :
978-1-4799-4134-6
DOI :
10.1109/MWSCAS.2014.6908482
