Stability Analysis for Frequency Tunable Bandpass Delta-Sigma ADC Architectures

Jesko Flemming; Bernhard Wicht; Pascal Witte

doi:10.1109/smacd58065.2023.10192145

Stability Analysis for Frequency Tunable Bandpass Delta-Sigma ADC Architectures

Jesko Flemming
, Bernhard Wicht
, Pascal Witte

Institute of Microelectronic Systems

University of Applied Sciences and Arts Hannover (HsH)

Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

Abstract

This paper presents bandpass delta-sigma modulator (BP-Δ∑M) structures, which are specifically suited for frequency tuning. The structures are identified through stability analyses and comparisons between chain of resonators feedforward (CRFF) and chain of resonators feedback (CRFB) delta-sigma modulator (Δ∑M) configurations. Frequency tuning is predominantly achieved through altering the resonator coefficients. Therefore, the paper guides designers though the analysis process for identifying suitable tunable BP-Δ∑M structures. When moderately changing the resonators the structures perform almost identical to a non-tunable modulator optimized for the same frequency. For large frequency shifts, the out-of-band gain (OOBG) of the signal transfer function (STF) and noise transfer function (NTF) in the CRFF structure, drastically increases and the control loop becomes unstable. It is shown how utilizing CRFB structures is advantageous for frequency tuning and that the OOBG in CRFF structures can be compensated through a unity STF (USTF) Δ∑M structure.

Original language	English
Title of host publication	Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798350332650
ISBN (Print)	979-8-3503-3284-1
DOIs	https://doi.org/10.1109/smacd58065.2023.10192145
Publication status	Published - 2023
Event	19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023 - Funchal, Portugal Duration: 3 Jul 2023 → 5 Jul 2023

Publication series

Name	Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023

Conference

Conference	19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023
Country/Territory	Portugal
City	Funchal
Period	3 Jul 2023 → 5 Jul 2023

Keywords

analog-to-digital converter (ADC)
bandpass
delta-sigma modulator
noise-shaping
resonator tuning

ASJC Scopus subject areas

Computer Graphics and Computer-Aided Design
Electrical and Electronic Engineering
Modelling and Simulation
Instrumentation

Access to Document

10.1109/smacd58065.2023.10192145

Cite this

Flemming, J., Wicht, B., & Witte, P. (2023). Stability Analysis for Frequency Tunable Bandpass Delta-Sigma ADC Architectures. In Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023 (Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/smacd58065.2023.10192145

Flemming, Jesko ; Wicht, Bernhard ; Witte, Pascal. / Stability Analysis for Frequency Tunable Bandpass Delta-Sigma ADC Architectures. Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023. Institute of Electrical and Electronics Engineers Inc., 2023. (Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023).

@inproceedings{4eba2f4569d6466ba4d5cc84166d325b,

title = "Stability Analysis for Frequency Tunable Bandpass Delta-Sigma ADC Architectures",

abstract = "This paper presents bandpass delta-sigma modulator (BP-Δ∑M) structures, which are specifically suited for frequency tuning. The structures are identified through stability analyses and comparisons between chain of resonators feedforward (CRFF) and chain of resonators feedback (CRFB) delta-sigma modulator (Δ∑M) configurations. Frequency tuning is predominantly achieved through altering the resonator coefficients. Therefore, the paper guides designers though the analysis process for identifying suitable tunable BP-Δ∑M structures. When moderately changing the resonators the structures perform almost identical to a non-tunable modulator optimized for the same frequency. For large frequency shifts, the out-of-band gain (OOBG) of the signal transfer function (STF) and noise transfer function (NTF) in the CRFF structure, drastically increases and the control loop becomes unstable. It is shown how utilizing CRFB structures is advantageous for frequency tuning and that the OOBG in CRFF structures can be compensated through a unity STF (USTF) Δ∑M structure.",

keywords = "analog-to-digital converter (ADC), bandpass, delta-sigma modulator, noise-shaping, resonator tuning",

author = "Jesko Flemming and Bernhard Wicht and Pascal Witte",

year = "2023",

doi = "10.1109/smacd58065.2023.10192145",

language = "English",

isbn = "979-8-3503-3284-1",

series = "Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

booktitle = "Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023",

address = "United States",

note = "19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023 ; Conference date: 03-07-2023 Through 05-07-2023",

}

Flemming, J, Wicht, B & Witte, P 2023, Stability Analysis for Frequency Tunable Bandpass Delta-Sigma ADC Architectures. in Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023. Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023, Institute of Electrical and Electronics Engineers Inc., 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023, Funchal, Portugal, 3 Jul 2023. https://doi.org/10.1109/smacd58065.2023.10192145

Stability Analysis for Frequency Tunable Bandpass Delta-Sigma ADC Architectures. / Flemming, Jesko; Wicht, Bernhard; Witte, Pascal.
Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023. Institute of Electrical and Electronics Engineers Inc., 2023. (Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023).

Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

TY - GEN

T1 - Stability Analysis for Frequency Tunable Bandpass Delta-Sigma ADC Architectures

AU - Flemming, Jesko

AU - Wicht, Bernhard

AU - Witte, Pascal

PY - 2023

Y1 - 2023

N2 - This paper presents bandpass delta-sigma modulator (BP-Δ∑M) structures, which are specifically suited for frequency tuning. The structures are identified through stability analyses and comparisons between chain of resonators feedforward (CRFF) and chain of resonators feedback (CRFB) delta-sigma modulator (Δ∑M) configurations. Frequency tuning is predominantly achieved through altering the resonator coefficients. Therefore, the paper guides designers though the analysis process for identifying suitable tunable BP-Δ∑M structures. When moderately changing the resonators the structures perform almost identical to a non-tunable modulator optimized for the same frequency. For large frequency shifts, the out-of-band gain (OOBG) of the signal transfer function (STF) and noise transfer function (NTF) in the CRFF structure, drastically increases and the control loop becomes unstable. It is shown how utilizing CRFB structures is advantageous for frequency tuning and that the OOBG in CRFF structures can be compensated through a unity STF (USTF) Δ∑M structure.

AB - This paper presents bandpass delta-sigma modulator (BP-Δ∑M) structures, which are specifically suited for frequency tuning. The structures are identified through stability analyses and comparisons between chain of resonators feedforward (CRFF) and chain of resonators feedback (CRFB) delta-sigma modulator (Δ∑M) configurations. Frequency tuning is predominantly achieved through altering the resonator coefficients. Therefore, the paper guides designers though the analysis process for identifying suitable tunable BP-Δ∑M structures. When moderately changing the resonators the structures perform almost identical to a non-tunable modulator optimized for the same frequency. For large frequency shifts, the out-of-band gain (OOBG) of the signal transfer function (STF) and noise transfer function (NTF) in the CRFF structure, drastically increases and the control loop becomes unstable. It is shown how utilizing CRFB structures is advantageous for frequency tuning and that the OOBG in CRFF structures can be compensated through a unity STF (USTF) Δ∑M structure.

KW - analog-to-digital converter (ADC)

KW - bandpass

KW - delta-sigma modulator

KW - noise-shaping

KW - resonator tuning

UR - https://www.scopus.com/pages/publications/85168670466

U2 - 10.1109/smacd58065.2023.10192145

DO - 10.1109/smacd58065.2023.10192145

M3 - Conference contribution

AN - SCOPUS:85168670466

SN - 979-8-3503-3284-1

T3 - Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023

BT - Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023

Y2 - 3 July 2023 through 5 July 2023

ER -

Flemming J, Wicht B, Witte P. Stability Analysis for Frequency Tunable Bandpass Delta-Sigma ADC Architectures. In Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023. Institute of Electrical and Electronics Engineers Inc. 2023. (Proceedings - 2023 19th International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design, SMACD 2023). doi: 10.1109/smacd58065.2023.10192145

Stability Analysis for Frequency Tunable Bandpass Delta-Sigma ADC Architectures

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Cite this