A cascaded continuous-time ΣΔ modulator with 80 dB dynamic range

Author

Ortmanns, Maurits ; Kuderer, Markus ; Manoli, Yiannos ; Gerfers, Friedel

Author_Institution

Freiburg Univ., Germany

Volume

1

fYear

2004

fDate

23-26 May 2004

Abstract

This paper presents the implementation of the first 2-1-1, cascaded continuous-time (CT) sigma-delta (ΣΔ) modulator. The successful realization is shown by measurements and a dynamic range of 80 dB is achieved. Special attenuation has been paid to the gain-error mismatch and a previously reported digital correction. Therefore, the modulator has been implemented on a circuit board to be able to test this nonideal behavior and to compensate for it. It could be shown, that cascaded CT ΣΔ modulators have the potential to be integrated as high-speed, high-resolution circuits.

Keywords

cascade networks; circuit testing; continuous time systems; error correction; sigma-delta modulation; attenuation; cascaded circuits; circuit behavior compensation; circuit behavior testing; circuit board; circuit implementation; circuit integration; circuit realization; continuous-time ΣΔ modulator; digital correction; gain-error mismatch; high-resolution circuits; high-speed circuits; modulator implementation; nonideal circuit behavior; Delta modulation; Dynamic range;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on

Print_ISBN

0-7803-8251-X

Type

conf

DOI

10.1109/ISCAS.2004.1328217

Filename

1328217