Design And Research Of A High Precision Σ-Δ A/D Converter

DOI

10.2991/jimec-17.2017.43How to use a DOI?

Keywords

Σ-Δ A/D converter; Σ-Δ modulator; Multi-level digital decimation filter; over sampling; high-precision

Abstract

A high-precision Σ-Δ analog-to-digital converter is designed in this paper in order to meet the accuracy requirement of analog to digital signal conversion in the area of high-frequency and low-voltage seismic wave. In the analog part, a second-order Σ-Δ modulator is used to realize oversampling and noise shaping, which greatly weakens the quantization noise. And the digital part of the design was composed by multi-level digital decimation filters including multi-stage CIC extraction filter, FIR half-band filter and IIR high-pass filter to achieve filtering and down sampling function. The combination of two parts finally realizes a low-bit quantitative, high resolution, high signal-to-noise ratio Σ-Δ A/D converter which can output 1 KHz, 24 bit resolution data.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jingjin Fan
AU  - Wenjie Qiu
AU  - Zihao Li
AU  - Qisheng Zhang
PY  - 2017/10
DA  - 2017/10
TI  - Design And Research Of A High Precision Σ-Δ A/D Converter
BT  - Proceedings of the 2017 2nd Joint International Information Technology, Mechanical and Electronic Engineering Conference (JIMEC 2017)
PB  - Atlantis Press
SP  - 193
EP  - 198
SN  - 2352-538X
UR  - https://doi.org/10.2991/jimec-17.2017.43
DO  - 10.2991/jimec-17.2017.43
ID  - Fan2017/10
ER  -