Title :
Noise analysis of continuous-time /spl Sigma//spl Delta/ modulators with switched-capacitor feedback DAC
Author :
Silva, Paulo ; Makinwa, Kofi ; Huijsing, Johan ; Breems, Lucien
Author_Institution :
Electron. Instrum. Lab., Delft Univ. of Technol.
Abstract :
This paper discusses the calculation of the input referred noise contribution of a switched-capacitor (SC feedback DAC to a continuous-time (CT) sigma-delta (SigmaDelta) modulator. Such a hybrid CT/SC modulator combines the high speed and implicit anti-aliasing filter of a CT loop filter with the greater jitter immunity of a SC DAC. A simple expression for the total input referred circuit noise for this type of SigmaDelta modulator is derived
Keywords :
circuit feedback; circuit noise; continuous time filters; digital-analogue conversion; sigma-delta modulation; switched capacitor networks; CT loop filter; CT sigma-delta modulator; SC feedback DAC; continuous-time sigma-delta modulators; digital analog conversion; high speed filter; implicit antialiasing filter; jitter immunity; noise analysis; switched-capacitor feedback; Circuit noise; Feedback; Filters; Jitter; Laboratories; MOS capacitors; Noise figure; Pulse modulation; Resistors; Switches;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693453
