Low frequency CMOS two-integrator oscillator for IoT applications

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this work a quasi-linear quadrature two-integrator RC oscillator is used for impedance meter. This topology has the advantage of having low distortion at low frequencies and it allows to tune the frequency of oscillation in a wide range of frequencies, while providing two differential quadrature outputs. In order to have the smallest possible area the capacitors are implemented with two parallel MOS transistors. It is intended that the transistors have low transconductance, thus, low current, and consequently the circuit will have the lowest possible power consumption, which is required for IoT (Internet of Things) applications. A circuit design is done in a 130 nm standard CMOS technology. The circuit power consumption is 3.18 μW, and a THD of -49 dB is obtained for a frequency of 20 kHz.

Original languageEnglish
Title of host publicationProceedings of the 24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages281-284
Number of pages4
ISBN (Electronic)9788363578114
DOIs
Publication statusPublished - 8 Aug 2017
Event24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017 - Bydgoszcz, Poland
Duration: 22 Jun 201724 Jun 2017

Conference

Conference24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017
CountryPoland
CityBydgoszcz
Period22/06/1724/06/17

Fingerprint

Networks (circuits)
Electric power utilization
Transconductance
MOSFET devices
Transistors
Capacitors
Topology
Internet of things

Keywords

  • impedance measurement techniques
  • Impedance Spectroscopy
  • linear oscillator
  • MOSFET-only
  • Quadrature oscillators
  • Two-Integrator

Cite this

Mendes, E., Oliveira, L. B., & Oliveira, J. P. (2017). Low frequency CMOS two-integrator oscillator for IoT applications. In Proceedings of the 24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017 (pp. 281-284). [8005216] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/MIXDES.2017.8005216
Mendes, Elvio ; Oliveira, Luis Bica ; Oliveira, Joao P. / Low frequency CMOS two-integrator oscillator for IoT applications. Proceedings of the 24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017. Institute of Electrical and Electronics Engineers Inc., 2017. pp. 281-284
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Mendes, E, Oliveira, LB & Oliveira, JP 2017, Low frequency CMOS two-integrator oscillator for IoT applications. in Proceedings of the 24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017., 8005216, Institute of Electrical and Electronics Engineers Inc., pp. 281-284, 24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017, Bydgoszcz, Poland, 22/06/17. https://doi.org/10.23919/MIXDES.2017.8005216

Low frequency CMOS two-integrator oscillator for IoT applications. / Mendes, Elvio; Oliveira, Luis Bica; Oliveira, Joao P.

Proceedings of the 24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017. Institute of Electrical and Electronics Engineers Inc., 2017. p. 281-284 8005216.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - In this work a quasi-linear quadrature two-integrator RC oscillator is used for impedance meter. This topology has the advantage of having low distortion at low frequencies and it allows to tune the frequency of oscillation in a wide range of frequencies, while providing two differential quadrature outputs. In order to have the smallest possible area the capacitors are implemented with two parallel MOS transistors. It is intended that the transistors have low transconductance, thus, low current, and consequently the circuit will have the lowest possible power consumption, which is required for IoT (Internet of Things) applications. A circuit design is done in a 130 nm standard CMOS technology. The circuit power consumption is 3.18 μW, and a THD of -49 dB is obtained for a frequency of 20 kHz.

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Mendes E, Oliveira LB, Oliveira JP. Low frequency CMOS two-integrator oscillator for IoT applications. In Proceedings of the 24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017. Institute of Electrical and Electronics Engineers Inc. 2017. p. 281-284. 8005216 https://doi.org/10.23919/MIXDES.2017.8005216