Title :
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
fDate :
6/24/1905 12:00:00 AM
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;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2002. IMTC/2002. Proceedings of the 19th IEEE
Print_ISBN :
0-7803-7218-2
DOI :
10.1109/IMTC.2002.1006848
