Publication detail

A novel low order delta–sigma modulator without harmonic distortion

KLEDROWETZ, V. PRISTACH, M. HÁZE, J. PAVLÍK, M. FUJCIK, L. DVOŘÁK, V.

Original Title

A novel low order delta–sigma modulator without harmonic distortion

English Title

A novel low order delta–sigma modulator without harmonic distortion

Type

journal article in Web of Science

Language

en

Original Abstract

The paper discusses a novel delta–sigma (ΔΣ) modulator structure, which compensates for the influence of a higher harmonic distortion to achieve a high resolution of up to 16 bits for the OSR = 100. The proposed approach combines the advantages of single-bit quantizer ΔΣ modulators with those provided by multi-bit ΔΣ devices. In the initial part of the article, we present the novel second-order structure, verify its correct functioning via the MATLAB simulation environment, and examine the requirements for a partial block. The related sections of the paper then analyze the design of a ΔΣ converter comprising the novel modulator structure and utilizing both the switched capacitor technique and the ONSemi I3T25 (350 nm) technology. The advantages and disadvantages of the discussed solution are evaluated, and the structure is compared with common versions of the ΔΣ modulator. The value of SNDR = 86 dB (ENOB = 14 bits) was achieved in the entire bandwidth.

English abstract

The paper discusses a novel delta–sigma (ΔΣ) modulator structure, which compensates for the influence of a higher harmonic distortion to achieve a high resolution of up to 16 bits for the OSR = 100. The proposed approach combines the advantages of single-bit quantizer ΔΣ modulators with those provided by multi-bit ΔΣ devices. In the initial part of the article, we present the novel second-order structure, verify its correct functioning via the MATLAB simulation environment, and examine the requirements for a partial block. The related sections of the paper then analyze the design of a ΔΣ converter comprising the novel modulator structure and utilizing both the switched capacitor technique and the ONSemi I3T25 (350 nm) technology. The advantages and disadvantages of the discussed solution are evaluated, and the structure is compared with common versions of the ΔΣ modulator. The value of SNDR = 86 dB (ENOB = 14 bits) was achieved in the entire bandwidth.

Keywords

Delta–sigma modulator (ΔΣ); Switched capacitor (SC) technique; Higher harmonic distortion; CMOS technology; Novel ΔΣ modulator structure

Released

01.02.2017

Publisher

Springer US

Pages from

487

Pages to

497

Pages count

511

URL

Documents

BibTex


@article{BUT132168,
  author="Vilém {Kledrowetz} and Marián {Pristach} and Jiří {Háze} and Michal {Pavlík} and Lukáš {Fujcik} and Vojtěch {Dvořák}",
  title="A novel low order delta–sigma modulator without harmonic distortion",
  annote="The paper discusses a novel delta–sigma (ΔΣ) modulator structure, which compensates for the influence of a higher harmonic distortion to achieve a high resolution of up to 16 bits for the OSR = 100. The proposed approach combines the advantages of single-bit quantizer ΔΣ modulators with those provided by multi-bit ΔΣ devices. In the initial part of the article, we present the novel second-order structure, verify its correct functioning via the MATLAB simulation environment, and examine the requirements for a partial block. The related sections of the paper then analyze the design of a ΔΣ converter comprising the novel modulator structure and utilizing both the switched capacitor technique and the ONSemi I3T25 (350 nm) technology. The advantages and disadvantages of the discussed solution are evaluated, and the structure is compared with common versions of the ΔΣ modulator. The value of SNDR = 86 dB (ENOB = 14 bits) was achieved in the entire bandwidth.",
  address="Springer US",
  chapter="132168",
  doi="10.1007/s10470-016-0884-0",
  howpublished="print",
  institution="Springer US",
  number="Issue 2",
  volume="Volume 90",
  year="2017",
  month="february",
  pages="487--497",
  publisher="Springer US",
  type="journal article in Web of Science"
}