SC ΣΔ converter for vibration sensor processing system

Author

Pavlik, Marek ; Kledrowetz, Vilem ; Haze, J. ; Pristach, Marian ; Prokop, R. ; Fujcik, Lukas ; Khateb, Fabian

Author_Institution

Dept. of Microelectron., Brno Univ. of Technol., Brno, Czech Republic

fYear

2013

fDate

2-4 July 2013

Firstpage

392

Lastpage

396

Abstract

The paper deals with a design of the 12-bit sigma delta (ΣΔ) modulator using switched capacitor technique (SC). It is a part of the system for vibration sensor output processing. Processing system consists of pre-amplifier, delta-sigma modulator and decimation digital filter. Detailed description of design process of the ΣΔ modulator is described in article. The design process starts by parameter requirements determination, continuing by structure proposal, design method and coefficients selection, selecting of compensation methods and concluding by design on the chip. ONSemi I2T100 700 nm CMOS technology was used for design. The value of SNDR = 81.1 dB (ENOB = 13.2 bits) was achieved.

Keywords

CMOS integrated circuits; delta-sigma modulation; digital filters; operational amplifiers; sigma-delta modulation; signal processing equipment; switched capacitor networks; vibrations; CMOS technology; SC ΣΔ converter; compensation method; decimation digital filter; delta-sigma modulator; pre-amplifier; size 700 nm; switched capacitor sigma delta modulator; vibration sensor processing system; word length 12 bit; Bandwidth; Capacitors; Frequency modulation; Harmonic analysis; Noise; Vibrations; ΣΔ modulator; CDS technique; MATLAB; SC technique; operational amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications and Signal Processing (TSP), 2013 36th International Conference on

Conference_Location

Rome

Print_ISBN

978-1-4799-0402-0

Type

conf

DOI

10.1109/TSP.2013.6613960

Filename

6613960