Title :
Peaking reduced STF design for CT ΣΔ modulators with selective pole compensation
Author :
Zorn, Christoph ; Widemann, Christian ; Brückner, Timon ; Ortmanns, Maurits ; Mathis, Wolfgang
Author_Institution :
Inst. of Theor. Electr. Eng., Leibniz Univ. of Hanover, Hanover, Germany
Abstract :
This paper presents a method to design continuous-time ΣΔ modulator with reduced peaking of the signal transfer function (STF). It is demonstrated that the approach is suitable for designing a flat STF while the anti-aliasing properties of the continuous time system can be retained. In addition, the presented method reduces the number of additional circuit elements needed for a flat STF frequency response. Experimental verification of the approach is presented.
Keywords :
continuous time systems; frequency response; modulators; CT ΣΔ modulators; STF design; additional circuit elements; anti-aliasing properties; continuous time system; continuous-time ΣΔ modulator; flat STF frequency response; selective pole compensation; signal transfer function; Damping; Feeds; Frequency modulation; Frequency response; Poles and zeros;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6271986
