Title :
Design of Continuous-Time ΣΔ modulators with real analog blocks
Author :
Belotti, Oscar ; Maloberti, Franco
Author_Institution :
Dept. of Electron., Univ. of Pavia, Pavia, Italy
Abstract :
The design of Continuous-Time (CT) Sigma-Delta modulator obtained by a discrete-time prototype is discussed. A proper heuristic transformation of the prototype enables an exact equivalence of CT and DT. This permits the trimming by computer simulations of the coefficients of the CT to account for the effect of real analog blocks. Simulation results for a second and third order scheme with real DACs verify the proposed methodology.
Keywords :
sigma-delta modulation; continuous-time ΣΔ modulator; discrete-time prototype; real analog blocks; sigma-delta modulator; Computer simulation; Delay; Mathematical model; Modulation; Optical signal processing; Prototypes; Transfer functions;
Conference_Titel :
Ph.D. Research in Microelectronics and Electronics (PRIME), 2010 Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-7905-4
