Title :
Mismatch-shaping DAC for lowpass and bandpass multi-bit Delta-Sigma modulators
Author :
Shui, Tao ; Schreier, Richardf ; Hudson, Forest
Author_Institution :
Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA
Abstract :
Techniques similar to delta-sigma (ΣΔ) modulation can be used to spectrally shape the static mismatch errors of multi-bit delta-sigma converters. Algorithms to shape the mismatch-error for lowpass and bandpass applications are covered. Both simulation and test results show that the signal-to-noise and distortion-ratio (SNDR) of a ΣΔ DAC is improved when mismatch-shaping is used
Keywords :
digital-analogue conversion; sigma-delta modulation; algorithm; bandpass converter; lowpass converter; mismatch-shaping DAC; multi-bit delta-sigma modulator; signal-to-noise and distortion-ratio; simulation; static mismatch error; Bandwidth; Data conversion; Delta modulation; Distortion; Linearity; Logic arrays; Noise shaping; Quantization; Testing; Transfer functions;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.704434
