DT Modeling of Clock Phase Noise Effects in LP CT Delta-Sigma ADCs with RZ Feedback
(2009) In IEEE Transactions on Circuits and Systems II: Express Briefs 56(7). p.530-534- Abstract
- The performance of continuous-time (CT) Delta Sigma modulators is limited by their sensitivity to clock phase noise (PN). The clock PN-induced in-band noise (IBN) is dependent on the magnitude and frequency of both the desired in-band signals and the out-of-band signals, as well as the shape of the clock PN spectrum. This brief presents a discrete-time (DT) model of the dominant clock PN-induced errors. It enables fast and accurate simulations of the clock PN effects with arbitrary input signals, PN spectra, and noise-transfer functions. The model has been verified by CT simulations and measurements on a second-order low-pass CT Delta Sigma modulator with return-to-zero feedback. The flexibility and usefulness of the DT model are... (More)
- The performance of continuous-time (CT) Delta Sigma modulators is limited by their sensitivity to clock phase noise (PN). The clock PN-induced in-band noise (IBN) is dependent on the magnitude and frequency of both the desired in-band signals and the out-of-band signals, as well as the shape of the clock PN spectrum. This brief presents a discrete-time (DT) model of the dominant clock PN-induced errors. It enables fast and accurate simulations of the clock PN effects with arbitrary input signals, PN spectra, and noise-transfer functions. The model has been verified by CT simulations and measurements on a second-order low-pass CT Delta Sigma modulator with return-to-zero feedback. The flexibility and usefulness of the DT model are demonstrated, and the two dominant clock PN effects are compared by means of simulations with orthogonal frequency-division multiplexing input signals and various PN specifications. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1037991
- author
- Andersson, Martin LU and Sundström, Lars LU
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- in
- IEEE Transactions on Circuits and Systems II: Express Briefs
- volume
- 56
- issue
- 7
- pages
- 530 - 534
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- wos:000268171700002
- scopus:68249146449
- ISSN
- 1549-7747
- DOI
- 10.1109/TCSII.2009.2020950
- language
- English
- LU publication?
- yes
- id
- 71e8860a-a7f6-47eb-a663-44cf761f62c6 (old id 1037991)
- date added to LUP
- 2016-04-01 11:37:02
- date last changed
- 2022-01-26 07:43:02
@article{71e8860a-a7f6-47eb-a663-44cf761f62c6, abstract = {{The performance of continuous-time (CT) Delta Sigma modulators is limited by their sensitivity to clock phase noise (PN). The clock PN-induced in-band noise (IBN) is dependent on the magnitude and frequency of both the desired in-band signals and the out-of-band signals, as well as the shape of the clock PN spectrum. This brief presents a discrete-time (DT) model of the dominant clock PN-induced errors. It enables fast and accurate simulations of the clock PN effects with arbitrary input signals, PN spectra, and noise-transfer functions. The model has been verified by CT simulations and measurements on a second-order low-pass CT Delta Sigma modulator with return-to-zero feedback. The flexibility and usefulness of the DT model are demonstrated, and the two dominant clock PN effects are compared by means of simulations with orthogonal frequency-division multiplexing input signals and various PN specifications.}}, author = {{Andersson, Martin and Sundström, Lars}}, issn = {{1549-7747}}, language = {{eng}}, number = {{7}}, pages = {{530--534}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Transactions on Circuits and Systems II: Express Briefs}}, title = {{DT Modeling of Clock Phase Noise Effects in LP CT Delta-Sigma ADCs with RZ Feedback}}, url = {{http://dx.doi.org/10.1109/TCSII.2009.2020950}}, doi = {{10.1109/TCSII.2009.2020950}}, volume = {{56}}, year = {{2009}}, }