Nauta OTA in a second-order continuous-time delta-sigma modulator

Astria Nur Irfansyah; Long Pham; Andrew Nicholson; Torsten Lehmann; Julian Jenkins; Tara Julia Hamilton

doi:10.1109/MWSCAS.2014.6908548

Nauta OTA in a second-order continuous-time delta-sigma modulator

Astria Nur Irfansyah^*, Long Pham, Andrew Nicholson, Torsten Lehmann, Julian Jenkins, Tara Julia Hamilton

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

This paper discusses and shows the use of Nauta operational transconductance amplifiers as integrator elements in a second-order continuous-time delta-sigma ADC. The structure is studied in order to take advantage of its potentially high bandwidth operation and simple inverter-based structure for wide output voltage range in current and future CMOS process. The second-order continuous-time delta sigma modulator circuit is implemented in CMOS 65nm, with simulation results showing that 63.29-dB SFDR, and an SNDR of 58.11-dB or 9.36 effective number of bits are achieved, with a signal bandwidth of 8 MHz and sampling frequency of 1.024 GHz. Challenges related to implementation issues and their trade-off are discussed.

Original language	English
Title of host publication	2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	849-852
Number of pages	4
ISBN (Electronic)	9781479941346, 9781479941346
DOIs	https://doi.org/10.1109/MWSCAS.2014.6908548
Publication status	Published - 23 Sept 2014
Event	2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014 - College Station, United States Duration: 3 Aug 2014 → 6 Aug 2014

Publication series

Name	Midwest Symposium on Circuits and Systems
ISSN (Print)	1548-3746

Conference

Conference	2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014
Country/Territory	United States
City	College Station
Period	3/08/14 → 6/08/14

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10.1109/MWSCAS.2014.6908548

Cite this

Irfansyah, A. N., Pham, L., Nicholson, A., Lehmann, T., Jenkins, J., & Hamilton, T. J. (2014). Nauta OTA in a second-order continuous-time delta-sigma modulator. In 2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014 (pp. 849-852). Article 6908548 (Midwest Symposium on Circuits and Systems). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSCAS.2014.6908548

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title = "Nauta OTA in a second-order continuous-time delta-sigma modulator",

abstract = "This paper discusses and shows the use of Nauta operational transconductance amplifiers as integrator elements in a second-order continuous-time delta-sigma ADC. The structure is studied in order to take advantage of its potentially high bandwidth operation and simple inverter-based structure for wide output voltage range in current and future CMOS process. The second-order continuous-time delta sigma modulator circuit is implemented in CMOS 65nm, with simulation results showing that 63.29-dB SFDR, and an SNDR of 58.11-dB or 9.36 effective number of bits are achieved, with a signal bandwidth of 8 MHz and sampling frequency of 1.024 GHz. Challenges related to implementation issues and their trade-off are discussed.",

author = "Irfansyah, {Astria Nur} and Long Pham and Andrew Nicholson and Torsten Lehmann and Julian Jenkins and Hamilton, {Tara Julia}",

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Irfansyah, AN, Pham, L, Nicholson, A, Lehmann, T, Jenkins, J & Hamilton, TJ 2014, Nauta OTA in a second-order continuous-time delta-sigma modulator. in 2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014., 6908548, Midwest Symposium on Circuits and Systems, Institute of Electrical and Electronics Engineers Inc., pp. 849-852, 2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014, College Station, United States, 3/08/14. https://doi.org/10.1109/MWSCAS.2014.6908548

Nauta OTA in a second-order continuous-time delta-sigma modulator. / Irfansyah, Astria Nur; Pham, Long; Nicholson, Andrew et al.
2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014. Institute of Electrical and Electronics Engineers Inc., 2014. p. 849-852 6908548 (Midwest Symposium on Circuits and Systems).

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

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AU - Irfansyah, Astria Nur

AU - Pham, Long

AU - Nicholson, Andrew

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AU - Jenkins, Julian

AU - Hamilton, Tara Julia

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N2 - This paper discusses and shows the use of Nauta operational transconductance amplifiers as integrator elements in a second-order continuous-time delta-sigma ADC. The structure is studied in order to take advantage of its potentially high bandwidth operation and simple inverter-based structure for wide output voltage range in current and future CMOS process. The second-order continuous-time delta sigma modulator circuit is implemented in CMOS 65nm, with simulation results showing that 63.29-dB SFDR, and an SNDR of 58.11-dB or 9.36 effective number of bits are achieved, with a signal bandwidth of 8 MHz and sampling frequency of 1.024 GHz. Challenges related to implementation issues and their trade-off are discussed.

AB - This paper discusses and shows the use of Nauta operational transconductance amplifiers as integrator elements in a second-order continuous-time delta-sigma ADC. The structure is studied in order to take advantage of its potentially high bandwidth operation and simple inverter-based structure for wide output voltage range in current and future CMOS process. The second-order continuous-time delta sigma modulator circuit is implemented in CMOS 65nm, with simulation results showing that 63.29-dB SFDR, and an SNDR of 58.11-dB or 9.36 effective number of bits are achieved, with a signal bandwidth of 8 MHz and sampling frequency of 1.024 GHz. Challenges related to implementation issues and their trade-off are discussed.

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Irfansyah AN, Pham L, Nicholson A, Lehmann T, Jenkins J, Hamilton TJ. Nauta OTA in a second-order continuous-time delta-sigma modulator. In 2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014. Institute of Electrical and Electronics Engineers Inc. 2014. p. 849-852. 6908548. (Midwest Symposium on Circuits and Systems). doi: 10.1109/MWSCAS.2014.6908548

Nauta OTA in a second-order continuous-time delta-sigma modulator

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