Ultra-Low Power High Sensitivity Photoplethysmography Sensor Based on Inverted Cascode Transimpedance Amplifier Using Quasi-Floating Gate

Hesham Ibrahem; Mohamed Atef; Elsayed Esam M. Khaled

doi:10.1109/NRSC.2019.8734533

Ultra-Low Power High Sensitivity Photoplethysmography Sensor Based on Inverted Cascode Transimpedance Amplifier Using Quasi-Floating Gate

Hesham Ibrahem, Mohamed Atef, Elsayed Esam M. Khaled

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

3 Citations (Scopus)

Abstract

This paper presents a design and simulation results for a Photoplethysmography (PPG) sensor front-end circuitry. An ultra-low power consumption is achieved since proposed integrated inverted cascode Transimpedance Amplifier (TIA) is incorporating a quasi-floating gate (QFG) topology. The proposed TIA has 0.3 Hz high-pass frequency that is less than the lowest frequency of PPG signal. The designed transimpedance gain of the proposed TIA is 119.9 dBΩ using a large area photodiode having a 20 pF capacitance. The TIA is followed by a Post Amplifier (PA) to increase the gain to 148.5 dBΩ. A buffer amplifier is desired as a last stage to drive the load capacitance of the next stage analog to digital converter (ADC). This proposed sensor system bandwidth is 4.5 kHz with an integrated input referred noise of 94 pA that is the average valued from Monte-carlo simulation. The total power consumption by the sensor front-end is approximately 30 μW.

Original language	English
Title of host publication	Proceedings of 2019 36th National Radio Science Conference, NRSC 2019
Editors	Rowayda Sadek, Ahmad Abdullatif Goudah, Sherif ElDiasty
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	360-367
Number of pages	8
ISBN (Electronic)	9781728107530
DOIs	https://doi.org/10.1109/NRSC.2019.8734533
Publication status	Published - Apr 2019
Externally published	Yes
Event	36th National Radio Science Conference, NRSC 2019 - Port Said, Egypt Duration: Apr 16 2019 → Apr 18 2019

Publication series

Name	National Radio Science Conference, NRSC, Proceedings
Volume	2019-April

Conference

Conference	36th National Radio Science Conference, NRSC 2019
Country/Territory	Egypt
City	Port Said
Period	4/16/19 → 4/18/19

Keywords

Oxygen saturation
Photoplethysmography
Pulse oximetry
Transimpedance Amplifier

ASJC Scopus subject areas

Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1109/NRSC.2019.8734533

Cite this

Ibrahem, H., Atef, M., & Khaled, E. E. M. (2019). Ultra-Low Power High Sensitivity Photoplethysmography Sensor Based on Inverted Cascode Transimpedance Amplifier Using Quasi-Floating Gate. In R. Sadek, A. A. Goudah, & S. ElDiasty (Eds.), Proceedings of 2019 36th National Radio Science Conference, NRSC 2019 (pp. 360-367). Article 8734533 (National Radio Science Conference, NRSC, Proceedings; Vol. 2019-April). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NRSC.2019.8734533

Ultra-Low Power High Sensitivity Photoplethysmography Sensor Based on Inverted Cascode Transimpedance Amplifier Using Quasi-Floating Gate. / Ibrahem, Hesham; Atef, Mohamed; Khaled, Elsayed Esam M.
Proceedings of 2019 36th National Radio Science Conference, NRSC 2019. ed. / Rowayda Sadek; Ahmad Abdullatif Goudah; Sherif ElDiasty. Institute of Electrical and Electronics Engineers Inc., 2019. p. 360-367 8734533 (National Radio Science Conference, NRSC, Proceedings; Vol. 2019-April).

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

Ibrahem, H, Atef, M & Khaled, EEM 2019, Ultra-Low Power High Sensitivity Photoplethysmography Sensor Based on Inverted Cascode Transimpedance Amplifier Using Quasi-Floating Gate. in R Sadek, AA Goudah & S ElDiasty (eds), Proceedings of 2019 36th National Radio Science Conference, NRSC 2019., 8734533, National Radio Science Conference, NRSC, Proceedings, vol. 2019-April, Institute of Electrical and Electronics Engineers Inc., pp. 360-367, 36th National Radio Science Conference, NRSC 2019, Port Said, Egypt, 4/16/19. https://doi.org/10.1109/NRSC.2019.8734533

Ibrahem H, Atef M, Khaled EEM. Ultra-Low Power High Sensitivity Photoplethysmography Sensor Based on Inverted Cascode Transimpedance Amplifier Using Quasi-Floating Gate. In Sadek R, Goudah AA, ElDiasty S, editors, Proceedings of 2019 36th National Radio Science Conference, NRSC 2019. Institute of Electrical and Electronics Engineers Inc. 2019. p. 360-367. 8734533. (National Radio Science Conference, NRSC, Proceedings). doi: 10.1109/NRSC.2019.8734533

Ibrahem, Hesham ; Atef, Mohamed ; Khaled, Elsayed Esam M. / Ultra-Low Power High Sensitivity Photoplethysmography Sensor Based on Inverted Cascode Transimpedance Amplifier Using Quasi-Floating Gate. Proceedings of 2019 36th National Radio Science Conference, NRSC 2019. editor / Rowayda Sadek ; Ahmad Abdullatif Goudah ; Sherif ElDiasty. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 360-367 (National Radio Science Conference, NRSC, Proceedings).

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abstract = "This paper presents a design and simulation results for a Photoplethysmography (PPG) sensor front-end circuitry. An ultra-low power consumption is achieved since proposed integrated inverted cascode Transimpedance Amplifier (TIA) is incorporating a quasi-floating gate (QFG) topology. The proposed TIA has 0.3 Hz high-pass frequency that is less than the lowest frequency of PPG signal. The designed transimpedance gain of the proposed TIA is 119.9 dBΩ using a large area photodiode having a 20 pF capacitance. The TIA is followed by a Post Amplifier (PA) to increase the gain to 148.5 dBΩ. A buffer amplifier is desired as a last stage to drive the load capacitance of the next stage analog to digital converter (ADC). This proposed sensor system bandwidth is 4.5 kHz with an integrated input referred noise of 94 pA that is the average valued from Monte-carlo simulation. The total power consumption by the sensor front-end is approximately 30 μW.",

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AB - This paper presents a design and simulation results for a Photoplethysmography (PPG) sensor front-end circuitry. An ultra-low power consumption is achieved since proposed integrated inverted cascode Transimpedance Amplifier (TIA) is incorporating a quasi-floating gate (QFG) topology. The proposed TIA has 0.3 Hz high-pass frequency that is less than the lowest frequency of PPG signal. The designed transimpedance gain of the proposed TIA is 119.9 dBΩ using a large area photodiode having a 20 pF capacitance. The TIA is followed by a Post Amplifier (PA) to increase the gain to 148.5 dBΩ. A buffer amplifier is desired as a last stage to drive the load capacitance of the next stage analog to digital converter (ADC). This proposed sensor system bandwidth is 4.5 kHz with an integrated input referred noise of 94 pA that is the average valued from Monte-carlo simulation. The total power consumption by the sensor front-end is approximately 30 μW.

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Ultra-Low Power High Sensitivity Photoplethysmography Sensor Based on Inverted Cascode Transimpedance Amplifier Using Quasi-Floating Gate

Abstract

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Conference

Keywords

ASJC Scopus subject areas

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