Title :
Calculating the stability range, SNR, and distortion of delta-sigma modulators
Author :
Wolff, Christopher M. ; Carley, L. Richard
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
Abstract :
The successful design of delta-sigma modulator (DSM)-based A/D or D/A converters depends heavily on the speed and flexibility of the methods used to determine important system parameters. A Markov model of a general-purpose DSM topology has been developed to calculate the stability range, the output signal-to-noise ratio (SNR), and the amount of harmonic distortion of a DSM. The results generated with the Markov-based approach compare favorably with the output of a DSM simulator which uses difference equations
Keywords :
Markov processes; analogue-digital conversion; digital-analogue conversion; electric distortion; interference (signal); modulators; noise; stability; A/D convertors; ADC; D/A converters; DAC; Markov model; SNR; delta-sigma modulators; harmonic distortion; output signal-to-noise ratio; stability range; Analytical models; Boundary conditions; Delta modulation; Difference equations; Noise level; Quantization; Signal to noise ratio; Stability; Topology; White noise;
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
DOI :
10.1109/ISCAS.1989.100624
