Efficient modified-sinc filters for sigma-delta A/D converters
- 1 November 2000
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing
- Vol. 47 (11) , 1204-1213
- https://doi.org/10.1109/82.885128
Abstract
In this paper, a method to design and implement a very efficient multistage decimation filter for a sigma-delta (/spl Sigma//spl Delta/) A/D converter is proposed. The scheme is composed of two stages, but the proposed method can be easily extended to a multiple-stage implementation. The first-stage filter is obtained by properly rotating the zero-pole distribution of a comb filter in the z-plane. The obtained structure exhibits linear phase and can be implemented by using a recursive structure with only two multipliers. The design phase is easy and very flexible. As most of the quantization noise is eliminated at the first stage, the second-stage filter can be designed with relaxed specifications. Any classical design algorithm can be used for it. An alternative scheme for the second stage can be obtained by splitting the stage into two substages, and the method proposed in this paper can be iterated.Keywords
This publication has 10 references indexed in Scilit:
- A novel architecture design for VLSI implementation of an FIR decimation filterPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Wave digital decimation filters in oversampled A/D convertersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Efficient VLSI-realizable decimators for sigma-delta analog-to-digital convertersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- A tutorial discussion of the oversampling method for A/D and D/A conversionPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Delta-Sigma modulator based A/D conversion without oversamplingIEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 1995
- Quantization noise spectraIEEE Transactions on Information Theory, 1990
- Oversampled Sigma-Delta ModulationIEEE Transactions on Communications, 1987
- A Voiceband Codec with Digital FilteringIEEE Transactions on Communications, 1981
- An economical class of digital filters for decimation and interpolationIEEE Transactions on Acoustics, Speech, and Signal Processing, 1981
- Interpolation and decimation of digital signals—A tutorial reviewProceedings of the IEEE, 1981