A fourth-order single-bit switched-capacitor sigma-delta modulator for distributed sensor applications

Author

Brigati, Simona ; Francesconi, Fabrizio ; Malcovati, Piero ; Maloberti, Franco

Author_Institution

Acco Microelettronica, Pavia, Italy

Volume

1

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

253

Abstract

In this paper we present a switched-capacitor sigma-delta modulator for high resolution applications. In particular this sigma-delta modulator is well suited for distributed sensor networks. The circuit, implemented in a double-poly, double-metal 0.6 μm CMOS technology, is based on a 4th-order single-loop architecture with a sampling frequency of 256 kHz. The chip consumes 50 mW from a single 5 V supply and achieves a signal-to-noise ratio of 104.9 dB over a bandwidth of 400 Hz, corresponding to a resolution of 17.1 bits.

Keywords

CMOS integrated circuits; distributed sensors; sensor fusion; sigma-delta modulation; switched capacitor networks; 0.6 micron; 256 kHz; 400 Hz; 5 V; 50 mW; distributed sensor networks; double-poly double-metal CMOS; fourth-order single-bit sigma-delta modulator; high resolution applications; sampling frequency; signal-to-noise ratio; single-loop architecture; switched-capacitor modulator; Bandwidth; CMOS technology; Circuits; Delta-sigma modulation; Frequency; Linearity; Petroleum; Sampling methods; Signal resolution; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2002. IMTC/2002. Proceedings of the 19th IEEE

ISSN

1091-5281

Print_ISBN

0-7803-7218-2

Type

conf

DOI

10.1109/IMTC.2002.1006848

Filename

1006848