Detail publikace

Modeling and design of novel architecture of multibit switched-capacitor sigma-delta converter with two-step quantization process

Lukas Fujcik, Thibault Mougel, Jiri Haze, Radimir Vrba

Originální název

Modeling and design of novel architecture of multibit switched-capacitor sigma-delta converter with two-step quantization process

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

This paper presents a novel architecture of high-order single-stage sigma-delta (ΣΔ) converter for sensor measurement. The two-step quantization technique was utilized to design of novel architecture of ΣΔ modulator. The time steps are interleaved to achieve resolution improvement without decreasing of conversion speed. This technique can be useful for low oversampling ratio. The novel architecture was designed to obtain high dynamic range of input signal, high signal-to-noise ratio and high reliability. This paper describes steps involved in a new VHDL design of a decimation filter for a ΣΔ modulator. Parameters of decimation filter are derived from the specifications of the overall ΣΔ modulator. The proposed architecture of switched-capacitor (SC) ΣΔ modulator was simulated with nonidealities blocks, such as sampling jitter, noise, and operational amplifier parameters (white noise, finite dc gain, finite bandwidth, slew rate and saturation voltages). The novel architecture of SC ΣΔ modulator with two-step quantization process was designed and simulated in MATLAB SIMULINK.

Klíčová slova

sigma-delta modulation, decimation filter, analog-to -digital conversion

Autoři

Lukas Fujcik, Thibault Mougel, Jiri Haze, Radimir Vrba

Rok RIV

2006

Vydáno

1. 1. 2006

Nakladatel

Morne, Mauritius

ISBN

0-7695-2540-7

Kniha

The International Conference on Systems, IEEE Computer Society

Strany od

130

Strany do

135

Strany počet

6

BibTex

@inproceedings{BUT18553,
  author="Lukáš {Fujcik} and Thibault {Mougel} and Radimír {Vrba} and Jiří {Háze}",
  title="Modeling and design of novel architecture of multibit switched-capacitor sigma-delta converter with two-step quantization process",
  booktitle="The International Conference on Systems, IEEE Computer Society",
  year="2006",
  pages="6",
  publisher="Morne, Mauritius",
  isbn="0-7695-2540-7"
}