A low power RC time constant auto-tuning circuit for RC-integrators in high linearity continuous-time delta sigma modulators

Cyrius Ouffoue; Van Tam Nguyen; Chadi Jabbour; Hussein Fakhoury; Patrick Loumeau

doi:10.1109/NEWCAS.2012.6329011

A low power RC time constant auto-tuning circuit for RC-integrators in high linearity continuous-time delta sigma modulators

Cyrius Ouffoue
, Van Tam Nguyen
, Chadi Jabbour
, Hussein Fakhoury
, Patrick Loumeau

CNRS LTCI

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

This paper presents the design of a low power RC time constant tuning circuit for high linearity 5 ^th order continuous time Delta Sigma modulator used in LTE-A application with 40MHz bandwidth. This auto-tuning system contains an analog integrator, a voltage comparator, and a digital tuning engine performed by a clock generator, a register and a counter which generate a control word that sets a programmable capacitors bank to obtain an RC time constant accuracy better than ±2%. It resolves process variations issues which could result in up to ±30% of RC time constant uncertainty and degrade the Delta Sigma modulators SNDR. The system has been designed in a 65nm CMOS technology with 1.2 V supply voltage and power consumption is less than 200μW.

Original language	English
Title of host publication	2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012
Pages	281-284
Number of pages	4
DOIs	https://doi.org/10.1109/NEWCAS.2012.6329011
Publication status	Published - 7 Nov 2012
Externally published	Yes
Event	2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012 - Montreal, QC, Canada Duration: 17 Jun 2012 → 20 Jun 2012

Publication series

Name	2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012

Conference

Conference	2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012
Country/Territory	Canada
City	Montreal, QC
Period	17/06/12 → 20/06/12

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10.1109/NEWCAS.2012.6329011

Cite this

Ouffoue, C., Nguyen, V. T., Jabbour, C., Fakhoury, H., & Loumeau, P. (2012). A low power RC time constant auto-tuning circuit for RC-integrators in high linearity continuous-time delta sigma modulators. In 2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012 (pp. 281-284). Article 6329011 (2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012). https://doi.org/10.1109/NEWCAS.2012.6329011

@inproceedings{965a12a7f7f7450393f267c1c42f468b,

title = "A low power RC time constant auto-tuning circuit for RC-integrators in high linearity continuous-time delta sigma modulators",

abstract = "This paper presents the design of a low power RC time constant tuning circuit for high linearity 5 th order continuous time Delta Sigma modulator used in LTE-A application with 40MHz bandwidth. This auto-tuning system contains an analog integrator, a voltage comparator, and a digital tuning engine performed by a clock generator, a register and a counter which generate a control word that sets a programmable capacitors bank to obtain an RC time constant accuracy better than ±2\%. It resolves process variations issues which could result in up to ±30\% of RC time constant uncertainty and degrade the Delta Sigma modulators SNDR. The system has been designed in a 65nm CMOS technology with 1.2 V supply voltage and power consumption is less than 200μW.",

author = "Cyrius Ouffoue and Nguyen, \{Van Tam\} and Chadi Jabbour and Hussein Fakhoury and Patrick Loumeau",

year = "2012",

month = nov,

day = "7",

doi = "10.1109/NEWCAS.2012.6329011",

language = "English",

isbn = "9781467308595",

series = "2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012",

pages = "281--284",

booktitle = "2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012",

note = "2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012 ; Conference date: 17-06-2012 Through 20-06-2012",

}

Ouffoue, C, Nguyen, VT, Jabbour, C, Fakhoury, H & Loumeau, P 2012, A low power RC time constant auto-tuning circuit for RC-integrators in high linearity continuous-time delta sigma modulators. in 2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012., 6329011, 2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012, pp. 281-284, 2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012, Montreal, QC, Canada, 17/06/12. https://doi.org/10.1109/NEWCAS.2012.6329011

A low power RC time constant auto-tuning circuit for RC-integrators in high linearity continuous-time delta sigma modulators. / Ouffoue, Cyrius; Nguyen, Van Tam; Jabbour, Chadi et al.
2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012. 2012. p. 281-284 6329011 (2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Loumeau, Patrick

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N2 - This paper presents the design of a low power RC time constant tuning circuit for high linearity 5 th order continuous time Delta Sigma modulator used in LTE-A application with 40MHz bandwidth. This auto-tuning system contains an analog integrator, a voltage comparator, and a digital tuning engine performed by a clock generator, a register and a counter which generate a control word that sets a programmable capacitors bank to obtain an RC time constant accuracy better than ±2%. It resolves process variations issues which could result in up to ±30% of RC time constant uncertainty and degrade the Delta Sigma modulators SNDR. The system has been designed in a 65nm CMOS technology with 1.2 V supply voltage and power consumption is less than 200μW.

AB - This paper presents the design of a low power RC time constant tuning circuit for high linearity 5 th order continuous time Delta Sigma modulator used in LTE-A application with 40MHz bandwidth. This auto-tuning system contains an analog integrator, a voltage comparator, and a digital tuning engine performed by a clock generator, a register and a counter which generate a control word that sets a programmable capacitors bank to obtain an RC time constant accuracy better than ±2%. It resolves process variations issues which could result in up to ±30% of RC time constant uncertainty and degrade the Delta Sigma modulators SNDR. The system has been designed in a 65nm CMOS technology with 1.2 V supply voltage and power consumption is less than 200μW.

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Ouffoue C, Nguyen VT, Jabbour C, Fakhoury H, Loumeau P. A low power RC time constant auto-tuning circuit for RC-integrators in high linearity continuous-time delta sigma modulators. In 2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012. 2012. p. 281-284. 6329011. (2012 IEEE 10th International New Circuits and Systems Conference, NEWCAS 2012). doi: 10.1109/NEWCAS.2012.6329011

A low power RC time constant auto-tuning circuit for RC-integrators in high linearity continuous-time delta sigma modulators

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