High Resolution Data Converters 

Description:
 

Delta-sigma modulators have become a popular means for the implementation of (monolithic)
        high-resolution analog-to-digital and digital-to-analog converters.
 
Our research in this field concentrates on the following topics:

Modulator behavior and mathematical modeling (--> DelSi simulator)

Alternative modulator architectures

Practical implementation issues

Publications:

G. Fischer, and A.J. Davis: DelSi - A Design and Simultation Tool for Delta-Sigma Modulators. Proc. of the XIV IMEKO World Congress, 'Workshop on ADC Modeling,' Tampere, Finland, June 1-6, 1997.

G. Fischer, and A.J. Davis: Alternative Topologies for Sigma-Delta Modulators - A Comparative Study.  IEEE Trans. on CAS II, pp.789-797, October 1997.

G. Fischer, and A.J. Davis: A Wide-Band Cascade Delta-Sigma Modulator with Digital Correction for Finite Amplifier Gain Effects.  IEE Electronics Letters, Vol. 34/06, pp.511-512, March 1998.
 

Pictures:
 
 
 

Photograph of Actual Chip (Click on Image for Larger View)

Magic Layout of Chip Design (Click on Image for Larger View)

Development Team:
 
 
 
 
 

Godi Fischer

Alan Davis

Chrisitian Weibel

Deokhwaan Hyun