Automated design of Switched Current Sigma-Delta Modulator with a new comparator structure

The paper presents a VHDL-AMS based approach to the Switched-Current (SI) Sigma-Delta Modulator design. EDA tools are presented, which translate the prototype VHDL-AMS description into SI realization. Another tool helps the designer to create the layout. The paper also describes a new proposed current mode comparator, which is used in the design. Postlayout simulation results are presented.

[1]  Hae-Seung Lee,et al.  Zero-Crossing-Based Ultra-Low-Power A/D Converters , 2010, Proceedings of the IEEE.

[2]  H. Traff,et al.  Novel approach to high speed CMOS current comparators , 1992 .

[3]  John B. Hughes,et al.  Switched currents-a new technique for analog sampled-data signal processing , 1989, IEEE International Symposium on Circuits and Systems,.

[4]  R. Rudnicki,et al.  Switched current filter design with the use of integrators composed of equal size transistors , 2005, Proceedings of the 2005 European Conference on Circuit Theory and Design, 2005..

[5]  P. Sniatala,et al.  Properties of bilinear SI intergrators composed of a complementary memory cell , 1999 .

[6]  Johann Hauer,et al.  Prospect of the future of switched-current circuits with regard to future CMOS technologies , 2008, Microelectron. J..

[7]  Pawel Sniatala,et al.  Automated design and layout generation for switched current circuits , 2006, 2006 IEEE International Symposium on Circuits and Systems.

[8]  Andrzej Handkiewicz,et al.  Mixed-Signal Systems: A Guide to Cmos Circuit Design , 2002 .

[9]  John B. Hughes,et al.  Second generation switched-current signal processing , 1990, IEEE International Symposium on Circuits and Systems.

[10]  Christofer Toumazou,et al.  Low-power high-speed current comparator design , 2008 .

[11]  Nianxiong Tan.  Switched-Current Design and Implementation of Oversampling A/D Converters , 1997 .

[12]  A. Handkiewicz,et al.  VHDL-AMS models for SI systems design , 2008, 2008 15th International Conference on Mixed Design of Integrated Circuits and Systems.

[13]  José Manuel de la Rosa,et al.  Sigma-Delta Modulators: Tutorial Overview, Design Guide, and State-of-the-Art Survey , 2011, IEEE Transactions on Circuits and Systems I: Regular Papers.