Systematic Design Method for LC Bandpass Sigma-Delta Modulators with Feedback FIRDACs

Nicolas Beilleau; Abla Kammoun; Hassan Aboushady; IEEE

doi:10.1109/ISCAS.2006.1692980

Back

Conference proceeding

Systematic Design Method for LC Bandpass Sigma-Delta Modulators with Feedback FIRDACs

Nicolas Beilleau, Abla Kammoun, Hassan Aboushady and IEEE

ISCAS IEEE International Symposium on Circuits and Systems, pp.1896-1899

ISCAS IEEE International Symposium on Circuits and Systems

01/01/2006

DOI: https://doi.org/10.1109/ISCAS.2006.1692980

Abstract

Computer Science

In this paper, a generalized technique for the design automation of fs/4 bandpass SigmaDelta modulators using feedback FIRDACs is proposed. The FIRDACs are used to increase the degrees of freedom in order to perform an exact equivalence with high order discrete-time SigmaDelta modulators and also to allow a more efficient circuit implementation of the LC filter. The design technique is based on discrete time-continuous time equivalence simplified by using the method of partial fractions expansion. The excess loop delay is taken into account without making more difficult the calculations since we define how to get the orders of the FIRDACs. Several examples of design are simulated with different values of excess loop delay.

Metrics

1 Record Views

Details

Title: Systematic Design Method for LC Bandpass Sigma-Delta Modulators with Feedback FIRDACs
Creators - without role: Nicolas Beilleau - Circuits Intégrés Numériques et Analogiques
Abla Kammoun
Hassan Aboushady - Circuits Intégrés Numériques et Analogiques
IEEE
Publication Details: ISCAS IEEE International Symposium on Circuits and Systems, pp.1896-1899
Conference: ISCAS IEEE International Symposium on Circuits and Systems
Publisher: IEEE
Identifiers: 9944114008331
Academic Unit: King Abdullah University of Science & Technology
Language: English
Resource Type: Conference proceeding