Delta-sigma A/D converters: the next generation

Delta-sigma A/D converters are well suited for applications requiring high resolution in a relatively low frequency bandwidth. As the technology continues to mature, the next generation of delta-sigma A/D converters will be exploited for applications requiring both high resolution and high speed. This paper describe three approaches to extending the useful bandwidth of the delta-sigma A/D converter. They include the use of multibit quantization with feedforward digital compensation, multibit quantization with feedback dynamic element matching and the use of parallelism.

[1]  Ian Galton.  Spectral shaping of circuit errors in digital-to-analog converters , 1997 .

[2]  Terri S. Fiez,et al.  A Nyquist-rate delta-sigma A/D converter , 1998 .

[3]  Robert Henderson,et al.  A 19-bit low-power multibit sigma-delta ADC based on data weighted averaging , 1997 .

[4]  Ian Galton,et al.  Delta-Sigma modulator based A/D conversion without oversampling , 1995 .

[5]  B.A. Wooley,et al.  A two-path bandpass /spl Sigma//spl Delta/ modulator for digital IF extraction at 20 MHz , 1997, 1997 IEEE International Solids-State Circuits Conference. Digest of Technical Papers.

[6]  T. C. Leslie,et al.  An improved sigma-delta modulator architecture , 1990, IEEE International Symposium on Circuits and Systems.

[7]  R. Baird,et al.  Linearity enhancement of multibit /spl Delta//spl Sigma/ A/D and D/A converters using data weighted averaging , 1995 .

[8]  R. Schreier,et al.  Noise-shaped multbit D/A convertor employing unit elements , 1995 .

[9]  Bang-Sup Song,et al.  A fourth-order bandpass delta-sigma modulator with reduced numbers of op amps , 1995 .

[10]  B. Leung,et al.  Multibit Sigma - Delta A/D converter incorporating a novel class of dynamic element matching techniques , 1992 .

[11]  L. R. Carley,et al.  A 16-bit 4'th order noise-shaping D/A converter , 1988, Proceedings of the IEEE 1988 Custom Integrated Circuits Conference.

[12]  Ian Galton,et al.  Oversampling parallel delta-sigma modulator A/D conversion , 1996 .

[13]  Gabor C. Temes,et al.  Multibit oversampled Σ-Δ A/D convertor with digital error correction , 1988 .

[14]  John B. Shoven,et al.  I , Edinburgh Medical and Surgical Journal.

[15]  R. Adams,et al.  A stereo multi-bit /spl Sigma//spl Delta/ D/A with asynchronous master-clock interface , 1996, 1996 IEEE International Solid-State Circuits Conference. Digest of TEchnical Papers, ISSCC.