Title :
A method for stability and performance analysis of low oversampling ratio higher order sigma delta noise shaper architectures
Author :
Gothenberg, Andreas ; Li, Bingxin ; Tenhunen, Hannu
Author_Institution :
Dept. of Electron., R. Inst. of Technol., Stockholm, Sweden
Abstract :
This paper demonstrates a method for determining the stability and sensitivity of feedback coefficient variations of sigma delta noise shapers using a model based on parameterized quantization gain which varies from sample to sample. The method is demonstrated for two types of sigma delta converter structures, the 4th order multibit cascaded structure and the 5th order single stage 1-bit structure
Keywords :
circuit feedback; circuit noise; circuit stability; quantisation (signal); sensitivity analysis; sigma-delta modulation; cascaded structure; circuit architecture; feedback coefficient; oversampling ratio; quantization gain; sensitivity analysis; sigma-delta noise shaper; single stage structure; stability; Delta modulation; Delta-sigma modulation; Noise shaping; Performance analysis; Polynomials; Quantization; Sampling methods; Signal to noise ratio; Stability analysis; Transfer functions;
Conference_Titel :
Circuits and Systems, 1999. 42nd Midwest Symposium on
Conference_Location :
Las Cruces, NM
Print_ISBN :
0-7803-5491-5
DOI :
10.1109/MWSCAS.1999.867277
