Adaptive processing applied to the design of highly digital analog interfaces

Author

De Souza, Adão A., Jr. ; Carro, Luigi ; Tousaad, Jawad

Author_Institution

Inst. de Informatica, Univ. Fed. do Rio Grande do Sul, Porto Alegre, Brazil

fYear

2005

fDate

23-26 May 2005

Firstpage

5597

Abstract

The paper proposes the use of complex adaptive processing as a means to reduce the analog to digital design gap on mixed-signal systems. Linear and non-linear adaptive filters are used to compensate for the non-idealities on the analog acquisition path allowing the use of low cost analog blocks. Several different digital architectures are investigated to increase resolution and reduce non-linearities for a target two-tone acquisition application. A prototype board is designed and the theoretical and measured results are analyzed.

Keywords

adaptive filters; adaptive signal processing; integrated circuit design; integrated circuit modelling; mixed analogue-digital integrated circuits; nonlinear filters; signal detection; adaptive processing; analog acquisition path; analog signal acquisition; analog to digital design gap; digital architectures; digital modeling; highly digital analog interfaces; integration costs; linear adaptive filters; low cost analog blocks; mixed-signal systems; nonlinear adaptive filters; two-tone acquisition application; Adaptive filters; Costs; Digital systems; Modeling; Noise generators; Prototypes; Random sequences; Signal design; Signal generators; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on

Print_ISBN

0-7803-8834-8

Type

conf

DOI

10.1109/ISCAS.2005.1465906

Filename

1465906