An overview of sigma-delta converters
- 1 January 1996
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Signal Processing Magazine
- Vol. 13 (1) , 61-84
- https://doi.org/10.1109/79.482138
Abstract
Using sigma-delta A/D methods, high resolution can be obtained for only low to medium signal bandwidths. This article describes conventional A/D conversion, as well as its performance modeling. We then look at the technique of oversampling, which can be used to improve the resolution of classical A/D methods. We discuss how sigma-delta converters use the technique of noise shaping in addition to oversampling to allow high resolution conversion of relatively low bandwidth signals. We examine the use of sigma-delta converters to convert narrowband bandpass signals with high resolution. Several parallel sigma-delta converters, which offer the potential of extending high resolution conversion to signals with higher bandwidths, are also described.Keywords
This publication has 51 references indexed in Scilit:
- A 13 bit ISDN-band oversampled ADC using two-stage third order noise shapingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- A sixth-order triple-loop sigma-delta CMOS ADC with 90 dB SNR and 100 kHz bandwidthPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- A third-order sigma-delta modulator with extended dynamic rangeIEEE Journal of Solid-State Circuits, 1994
- A high-resolution multibit Sigma Delta ADC with digital correction and relaxed amplifier requirementsIEEE Journal of Solid-State Circuits, 1993
- A 16-b 320-kHz CMOS A/D converter using two-stage third-order Sigma Delta noise shapingIEEE Journal of Solid-State Circuits, 1993
- Multibit Sigma - Delta A/D converter incorporating a novel class of dynamic element matching techniquesIEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 1992
- A 16-b 160-kHz CMOS A/D converter using sigma-delta modulationIEEE Journal of Solid-State Circuits, 1990
- A noise-shaping coder topology for 15+ bit convertersIEEE Journal of Solid-State Circuits, 1989
- Oversampling A-to-D and D-to-A converters with multistage noise shaping modulatorsIEEE Transactions on Acoustics, Speech, and Signal Processing, 1988
- A 16-bit oversampling A-to-D conversion technology using triple-integration noise shapingIEEE Journal of Solid-State Circuits, 1987