Low frequency CMOS two-integrator oscillator for IoT applications

Elvio Mendes; Luis Bica Oliveira; Joao P. Oliveira

doi:10.23919/MIXDES.2017.8005216

Low frequency CMOS two-integrator oscillator for IoT applications

Elvio Mendes, Luis Bica Oliveira, Joao P. Oliveira

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

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 language	English
Title of host publication	Proceedings of the 24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	281-284
Number of pages	4
ISBN (Electronic)	9788363578114
DOIs	https://doi.org/10.23919/MIXDES.2017.8005216
Publication status	Published - 8 Aug 2017
Event	24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017 - Bydgoszcz, Poland Duration: 22 Jun 2017 → 24 Jun 2017

Conference

Conference	24th International Conference on Mixed Design of Integrated Circuits and Systems, MIXDES 2017
Country/Territory	Poland
City	Bydgoszcz
Period	22/06/17 → 24/06/17

Keywords

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

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10.23919/MIXDES.2017.8005216Licence: Unspecified

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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). Article 8005216 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.23919/MIXDES.2017.8005216

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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.",

keywords = "impedance measurement techniques, Impedance Spectroscopy, linear oscillator, MOSFET-only, Quadrature oscillators, Two-Integrator",

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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 (IEEE), 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 (IEEE), 2017. p. 281-284 8005216.

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

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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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Low frequency CMOS two-integrator oscillator for IoT applications

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