Title :
Noise-coupled continuous-time ΔΣ ADCs
Author :
Wang, Yan ; Temes, Gabor C.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA
Abstract :
The noise-coupling technique successfully used in discrete-time delta-sigma ADCs is extended to the realization of continuous-time delta-sigma ADCs, resulting in improved quantization noise shaping. The operation and design of these circuits is discussed in detail. To verify the proposed design methodology, a second-order continuous-time delta-sigma modulator with noise coupling was designed and simulated.
Keywords :
analogue-digital conversion; circuit noise; delta-sigma modulation; discrete time systems; continuous-time DeltaSigma ADC; discrete-time delta-sigma ADCs; noise-coupling technique; quantization noise shaping; second-order continuous-time delta-sigma modulator; Circuit noise; Computer science; Coupling circuits; Delay; Delta modulation; Design methodology; Filtering; Filters; Noise shaping; Quantization;
Conference_Titel :
Circuits and Systems, 2009. MWSCAS '09. 52nd IEEE International Midwest Symposium on
Conference_Location :
Cancun
Print_ISBN :
978-1-4244-4479-3
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2009.5236084
