## Biography

Richard Schreier is a Senior Design Engineer in the High Speed Converters group of Analog Devices. He received a Ph.D. from the University of Toronto in 1991 and was a Professor at Oregon State University from 1991-1997. From 1997 to 2007 he worked out of the Wilmington, Massachusetts facility of Analog Devices but has now moved to ADI's Toronto design center.

Dr. Schreier is the author of the freeware delta-sigma toolbox for MATLAB, co-editor (with S.R. Norsworthy and G.C Temes) of "Delta-Sigma Data Converters," co-author (with G.C. Temes) of "Understanding Delta-Sigma Data Converters," and a recipient of the 2002 ISSCC Lewis Winner Best Paper Award as well as the 2006 ISSCC Beatrice Winner Award.

He has lectured extensively on the high-level design of delta-sigma converters, including 10 years of participation in various MEAD courses and in short courses offered at CICC and ISSCC.**Publications**

### Books/Book Chapters

- "Delta Sigma Data Converters ," R. Schreier and G.C. Temes, Wiley, Piscataway, New Jersey, 2005.
- R. Schreier, "High-speed bandpass ADCs," pp. 65-90 in Analog Circuit Design, M. Steyaert, A. H. M. van Roermund and J. H. Huising, Eds., Springer, Dordrecht, The Netherlands, 2006. From Delta Sigma Data Converters, Norsworthy, Schreier and Temes, Eds., IEEE Press, Piscataway, New Jersey, 1997.
- R. Adams and R. Schreier, "Stability Theory for delta-sigma modulators," Ch. 4.
- S. Jantzi, R. Schreier and M. Snelgrove, "The design of bandpass delta-sigma ADCs," Ch. 9.
- G. C. Temes, S. Shu and R. Schreier, "Architectures for delta-sigma DACs," Ch. 10.

**Journal Papers**

- R. Schreier, N. Abaskharoun, H. Shibata, D. Paterson, S. Rose, I. Mehr and Q. Luu, "A 375-mW quadrature bandpass DS ADC with 90-dB DR and 8.5-MHz BW at 44 MHz," IEEE Journal of Solid-State Circuits, vol. 41, no. 12, pp. 2632 -2640, December 2006.
- R. Schreier, J. Silva, J. Steensgaard and G.C. Temes, "Design-oriented estimation of thermal noise in switched-capacitor circuits," IEEE Transactions on Circuits and Systems, vol. 15, no. 11, pp. 2358-2368, November 2005.
- S. Luschas, R. Schreier and H.S. Lee; "Radio frequency digital-to-analog converter," IEEE Journal of Solid-State Circuits, vol. 39, no. 9, pp. 1462-1467, Sept 2004.
- R. Schreier, J. Lloyd, L. Singer, D. Paterson, M. Timko, M. Hensley, G. Patterson, K. Behel and J. Zhou, "A 10-300-MHz IF-digitizing IC with 90-105-dB dynamic range and 15-333-kHz bandwidth," IEEE Journal of Solid-State Circuits, vol. 37, no. 12, pp. 1636-1644, December 2002.
- R. Schreier, M. Goodson and B. Zhang "Convex positive invariant sets for delta-sigma modulators," IEEE Transactions on Circuits and Systems I, vol. 44, no. 1, pp. 38-44, January 1997.
- R. Schreier and B. Zhang, "Delta-sigma modulators employing continuous-time circuitry," IEEE Transactions on Circuits and Systems I, vol. 43, no. 4, pp. 324-332, April 1996.
- R. Schreier and B. Zhang, "Noise-shaped multibit D/A convertor employing unit elements ," Electronics Letters, vol. 31, no. 20, pp. 1712-1713, Sept. 28 1995.
- R. Schreier, "On the use of chaos to reduce idle-channel tones in delta-sigma modulators," IEEE Transactions on Circuits and Systems I, vol. 41, no. 8, pp. 539-547, August 1994.
- R. Schreier, "An empirical study of high-order single-bit delta-sigma modulators," IEEE Transactions on Circuits and Systems II, vol. 40, no. 8, pp. 461-466, August 1993.
- Y. Yang, R. Schreier, G. C. Temes and S. Kiaei, "On-line adaptive digital correction of dual-quantization delta-sigma modulators," Electronics Letters, vol. 28, no. 16, pp. 1511-1513, July 30 1992.
- S. Abdennadher, S. Kiaei, G. C. Temes and R. Schreier, "Adaptive self-calibrating delta-sigma modulators," Electronics Letters, vol. 28, no. 14, pp. 1288-1289, July 2 1992.
- S.A. Jantzi, R. Schreier, and M. Snelgrove, "Bandpass sigma-delta analog-to-digital conversion," IEEE Transactions on Circuits and Systems, vol. 38, no. 23, pp. 1406-1409, November 1991.
- R. Schreier and W. M. Snelgrove, "Bandpass sigma-delta modulation," Electronics Letters, vol. 25, no. 23, pp. 1560-1561, November 9 1989.

### Conference Papers

- R. Schreier, N. Abaskharoun, H. Shibata, I. Mehr, S. Rose and D. Paterson, "A 375-mW quadrature bandpass DS ADC with 90-dB DR and 8.5-MHz BW at 44 MHz," International Solid-State Circuits Conference Digest of Technical Papers, pp. 64-65, Feb 2006.
- I. Mehr, S. Rose, S. Nesterenko, D. Paterson, R. Schreier, H. L'Bahy, S. Kidambi, M. Elliott and S. Puckett, "A dual-conversion tuner for multi-standard terrestrial and cable reception," Digest of Technical Papers, Symposium on VLSI Circuits, pp. 340-343, June 16-18, 2005.
- S. Luschas, R. Schreier and H.-S. Lee, "A 942-MHz output, 17.5-MHz bandwidth, -70dBc IMD3 SD DAC," Proceedings of the IEEE Custom Integrated Circuits Conference, pp. 131 -134, Sept. 21-24, 2003.
- R. Schreier, "Quadrature mismatch-shaping," Proceedings, IEEE International Symposium on Circuits and Systems, vol. 4, pp. 675-678, May 26-29 2002.
- R. Schreier, J. Lloyd, L. Singer, D. Paterson, M. Timko, M. Hensley, G. Patterson, K. Behel, J. Zhou and W. J, Martin, "A 50 mW Bandpass SD ADC with 333 kHz BW and 90 dB DR," International Solid-State Circuits Conference Digest of Technical Papers, pp. 216-217, Feb 2002.
- R. Schreier, J. Lloyd, L. Singer, F. Weiss, B. Sam, D. Paterson, C. Jacobs, J. Steinheider, M. Timko, J. Zhou and W. Martin, "A Flexible 10-300 MHz Receiver IC Employing A Bandpass Sigma-Delta ADC," Proceedings, IEEE Radio Frequency Integrated Circuits Symposium, pp. 71-74, May 2001.
- H. Lin and R. Schreier, "A bandpass mismatch-shaped multi-bit SD switched-capacitor DAC using butterfly shuffler" International Solid-State Circuits Conference Digest of Technical Papers, pp. 58-59, Feb 1999.
- T. Shui, R. Schreier and F. Hudson, "Mismatch-shaping DAC for lowpass and bandpass multi-bit delta-sigma modulators," Proceedings, IEEE International Symposium on Circuits and Systems, vol. 1, pp. 352-355, Monterey, CA May 31- June 3 1998.
- T. Shui, R. Schreier and F. Hudson, "Modified mismatch-shaping for continuous-time delta-sigma modulators," Proceedings, IEEE Custom Integraged Circuits Conference, pp. 225-228, May 1998.
- R. Schreier, "Mismatch-shaping digital-to-analog conversion," 103rd Convention of the Audio Engineering Society, preprint no. 4529, September 26-29 1997.
- H. Lin, J. da Silva, B. Zhang and R. Schreier, "Multi-bit DAC with noise-shaped element mismatch," Proceedings, IEEE International Symposium on Circuits and Systems, vol. 1, pp. 235-238, May 1996.
- M. Goodson, B. Zhang and R. Schreier, "Proving stability of delta-sigma modulators using invariant sets," Proceedings, IEEE International Symposium on Circuits and Systems, vol. 1, pp. 633-636, May 1995.
- C. Kuskie, B. Zhang and R. Schreier, "A decimation filter architecture for GHz delta-sigma modulators," Proceedings, IEEE International Symposium on Circuits and Systems, vol. 2, pp. 953-956, May 1995.
- M. Goodson, B. Zhang and R. Schreier, "Computational geometry finds invariant sets and proves the stability of high-order delta sigma modulators," presented at the Third SIAM Conference on Applications of Dynamical Systems, May 21-24 1995.
- B. Zhang, M. Goodson and R. Schreier, "Invariant sets for general second-order lowpass delta-sigma modulators with DC inputs," Proceedings, IEEE International Symposium on Circuits and Systems, vol. 6, pp. 1-4, May 30-June 2 1994.
- S. Pattamatta, P. Manapragada, V. Dalal and R. Schreier, "A switched-current bandpass delta-sigma modulator," Proceedings, IEEE International Symposium on Circuits and Systems, vol. 5, pp. 477-480, May 30-June 2 1994.
- R. Schreier, "Bandpass Delta-Sigma Modulation: SC, SI and Other Implementations," Proceedings, HP Leveraged Design System Digital Signal Processing Conference, Sept. 16-17 1993.
- R. Schreier, "Destabilizing limit cycles in delta-sigma modulators with chaos," Proceedings, IEEE International Symposium on Circuits and Systems, pp. 1369-1372, May 3-6 1993.
- R. Schreier, "Destabilizing limit-cycles in delta-sigma modulators with chaos," presented at the First SIAM Conference on Applications of Dynamical Systems, October 15-19 1992.
- R. Schreier, G. C. Temes, A. G. Yesilyurt, Z. X. Zhang, Z. Czarnul and A. Hairapetian, "Multibit bandpass delta-sigma modulators using N-path structures," Proceedings, IEEE International Symposium on Circuits and Systems, pp. 593-596, May 10-13 1992.
- X. Xu, G. C. Temes and R. Schreier, "The implementation of dual-truncation SD D/A converters," Proceedings, IEEE International Symposium on Circuits and Systems, pp. 597-600, May 10-13 1992.
- R. Schreier and Y. Yang, "Stability tests for single-bit sigma-delta modulators with second-order FIR noise transfer functions," Proceedings, IEEE International Symposium on Circuits and Systems, pp. 1316-1319, May 10-13 1992.
- S. A. Jantzi, R. Schreier, and M. Snelgrove, "A bandpass A/D convertor for a digital AM receiver," Proceedings, IEE International Conference on Analogue-to-Digital and Digital-to-Analogue Conversion, Swansea, UK, pp. 75-80, September 17-19 1991.
- R. Schreier and W. M. Snelgrove, "SD modulation is a mapping," Proceedings, IEEE International Symposium on Circuits and Systems, June 11-14 1991, vol. 5, pp. 2415-2418.
- R. Schreier and M. Snelgrove, "Stability in a general SD modulator," Proceedings, IEEE International Conference on Acoustics, Speech and Signal Processing, vol. 3, pp. 1769-1772, May 14-17 1991.
- R. Schreier and W. M. Snelgrove, "Decimation for bandpass sigma-delta analog-to-digital conversion," Proceedings, IEEE International Symposium on Circuits and Systems, vol. 3, pp. 1801-1804, May 1-3 1990.

**Invited Conference Presentations**

- R. Schreier and P. Ferguson, "Bandpass delta-sigma analog-to-digital conversion for wireless applications," presented at ISHM Advanced Technology Workshop on Wireless Communication, Aug. 1995.
- R. Schreier, "Bandpass delta-sigma converters," presented at Int. Symp. Signals, Systems and Electronics, Oct. 25 1995.
- R. Schreier, "Bandpass delta-sigma converters," presented at 29th Asilomar Conference on Signals, Systems and Computers, Oct. 30 1995.