Title :
Enhanced multi-bit delta-sigma modulator with two-step pipeline quantizer
Author :
Rajaee, Omid ; Moon, Un Ku
Author_Institution :
Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR
Abstract :
A new delta-sigma analog-to-digital converter (ADC) is presented in this paper. A two-step pipeline ADC is used as the quantizer of this delta-sigma modulator to reduce the quantization noise at the output of the modulator. The proposed structure relaxes the output swing and gain requirements of the integrators. In addition, the front-end DAC of the proposed modulator is simplified. Simulation results verify the effectiveness of the proposed architecture.
Keywords :
analogue-digital conversion; delta-sigma modulation; analog-to-digital converter; delta-sigma modulator; output swing; quantization noise; two-step pipeline quantizer; Circuit noise; Delta modulation; Digital modulation; Filters; Multi-stage noise shaping; Noise cancellation; Noise reduction; Noise shaping; Pipelines; Quantization;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4541642
