Title :
A systematic approach for testing a DAC mismatch shaping method
Author :
Neitola, Marko ; Rahkonen, Timo
Author_Institution :
Dept. of Electr. & Inf. Eng., Univerisity of Oulu, Oulu, Finland
Abstract :
DAC mismatch shaping for multibit Delta-Sigma A/D-converters has been a very popular topic in scientific publications. In recent years, most of these publications have proposed various methods on how to modify a popular data weighted averaging scheme so that it would produce less spurious tones. Many of these publications reveal different styles on reporting the performance merits. A simulation result based on only one set of random differential nonlinearity errors for the unit DACs is hardly valid. A group of simulations based on several randomizations is more informative, but hardly repeatable. This paper proposes some ground rules, which improve comparability of various methods.
Keywords :
delta-sigma modulation; DAC mismatch shaping method testing; data weighted averaging scheme; multibit delta-sigma A/D-converter; random differential nonlinearity error; Feedback loop; Frequency; Multi-stage noise shaping; Polynomials; Sampling methods; System testing;
Conference_Titel :
Circuit Theory and Design, 2009. ECCTD 2009. European Conference on
Conference_Location :
Antalya
Print_ISBN :
978-1-4244-3896-9
Electronic_ISBN :
978-1-4244-3896-9
DOI :
10.1109/ECCTD.2009.5275020