Title :
A novel architecture for reducing the sensitivity of multibit sigma-delta ADCs to DAC nonlinearity
Author :
Adams, Mervyn H. ; Toumazou, Christofer
Author_Institution :
Dept. of Electr. & Electron. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK
fDate :
30 Apr-3 May 1995
Abstract :
A novel first order sigma-delta architecture, which also shapes the nonlinearity of the DAC is proposed. Unlike other proposed solutions this topology consists of multibit quantisation noise only so offers enhanced stability and higher-order noise-shaping at the expense of a highly linear analog differentiator. The paper discusses some aspects of a practical realisation and possible extensions to higher order noise-shaping
Keywords :
circuit stability; differentiating circuits; digital-analogue conversion; quantisation (signal); sensitivity; sigma-delta modulation; DAC nonlinearity; first order sigma-delta architecture; higher-order noise-shaping; linear analog differentiator; multibit quantisation noise; multibit sigma-delta ADCs; sensitivity; stability; Additive noise; Delta-sigma modulation; Feedback; Filters; Linearity; Multi-stage noise shaping; Noise cancellation; Noise shaping; Quantization; Stability;
Conference_Titel :
Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2570-2
DOI :
10.1109/ISCAS.1995.521440
