An Energy-Efficient Readout Method for Piezoresistive Differential Pressure Sensors

Hui Jiang; Kofi A.A. Makinwa; Stoyan Nihitanov

doi:10.1109/IECON.2017.8216736

An Energy-Efficient Readout Method for Piezoresistive Differential Pressure Sensors

Hui Jiang, Kofi A.A. Makinwa, Stoyan Nihitanov

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

2 Citations (Scopus)

Abstract

This paper describes a low power and low noise circuit for resistive Wheatstone bridge sensor readout. The proposed readout exploits the bridge configuration of the sensor by embedding it into a second-order continuous-time sigma delta modulator (RC CTΔΣM). By directly digitizing the output signal of a Wheatstone bridge in the current mode, the noise performance is dominated by the operational transconductance amplifier (OTA) in the first integrator. The proposed readout is designed in a 0.35 μm CMOS technology. Simulation results show that it achieves an input referred noise power spectral density (PSD) of 4.2 nV/√Hz with a current consumption of 860 μA from a 5 V voltage supply. This represents a noise efficiency factor (NEF) of 4.7.

Original language	English
Title of host publication	Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society
Place of Publication	Piscataway, NJ
Publisher	IEEE
Pages	4287-4291
Number of pages	5
ISBN (Electronic)	978-1-5386-1127-2
DOIs	https://doi.org/10.1109/IECON.2017.8216736
Publication status	Published - 2017
Event	IECON 2017: 43rd Annual Conference of the IEEE Industrial Electronics Society - China National Convention Center, Beijing, China Duration: 29 Oct 2017 → 1 Nov 2017 Conference number: 43 http://iecon2017.csp.escience.cn/dct/page/1

Conference

Conference	IECON 2017
Country/Territory	China
City	Beijing
Period	29/10/17 → 1/11/17
Internet address	http://iecon2017.csp.escience.cn/dct/page/1

Keywords

Wheatstone bridge
Energy-efficient
Low noise power density
Continuous time sigma delta modulator

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10.1109/IECON.2017.8216736

Cite this

@inproceedings{a9a4efa3e7a045e184d0b8e90e469f5a,

title = "An Energy-Efficient Readout Method for Piezoresistive Differential Pressure Sensors",

abstract = "This paper describes a low power and low noise circuit for resistive Wheatstone bridge sensor readout. The proposed readout exploits the bridge configuration of the sensor by embedding it into a second-order continuous-time sigma delta modulator (RC CTΔΣM). By directly digitizing the output signal of a Wheatstone bridge in the current mode, the noise performance is dominated by the operational transconductance amplifier (OTA) in the first integrator. The proposed readout is designed in a 0.35 μm CMOS technology. Simulation results show that it achieves an input referred noise power spectral density (PSD) of 4.2 nV/√Hz with a current consumption of 860 μA from a 5 V voltage supply. This represents a noise efficiency factor (NEF) of 4.7.",

keywords = "Wheatstone bridge, Energy-efficient, Low noise power density, Continuous time sigma delta modulator",

author = "Hui Jiang and Makinwa, {Kofi A.A.} and Stoyan Nihitanov",

year = "2017",

doi = "10.1109/IECON.2017.8216736",

language = "English",

pages = "4287--4291",

booktitle = "Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society",

publisher = "IEEE",

address = "United States",

note = "IECON 2017 : 43rd Annual Conference of the IEEE Industrial Electronics Society ; Conference date: 29-10-2017 Through 01-11-2017",

url = "http://iecon2017.csp.escience.cn/dct/page/1",

}

An Energy-Efficient Readout Method for Piezoresistive Differential Pressure Sensors. / Jiang, Hui; Makinwa, Kofi A.A.; Nihitanov, Stoyan.
Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society. Piscataway, NJ: IEEE, 2017. p. 4287-4291.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - An Energy-Efficient Readout Method for Piezoresistive Differential Pressure Sensors

AU - Jiang, Hui

AU - Makinwa, Kofi A.A.

AU - Nihitanov, Stoyan

N1 - Conference code: 43

PY - 2017

Y1 - 2017

N2 - This paper describes a low power and low noise circuit for resistive Wheatstone bridge sensor readout. The proposed readout exploits the bridge configuration of the sensor by embedding it into a second-order continuous-time sigma delta modulator (RC CTΔΣM). By directly digitizing the output signal of a Wheatstone bridge in the current mode, the noise performance is dominated by the operational transconductance amplifier (OTA) in the first integrator. The proposed readout is designed in a 0.35 μm CMOS technology. Simulation results show that it achieves an input referred noise power spectral density (PSD) of 4.2 nV/√Hz with a current consumption of 860 μA from a 5 V voltage supply. This represents a noise efficiency factor (NEF) of 4.7.

AB - This paper describes a low power and low noise circuit for resistive Wheatstone bridge sensor readout. The proposed readout exploits the bridge configuration of the sensor by embedding it into a second-order continuous-time sigma delta modulator (RC CTΔΣM). By directly digitizing the output signal of a Wheatstone bridge in the current mode, the noise performance is dominated by the operational transconductance amplifier (OTA) in the first integrator. The proposed readout is designed in a 0.35 μm CMOS technology. Simulation results show that it achieves an input referred noise power spectral density (PSD) of 4.2 nV/√Hz with a current consumption of 860 μA from a 5 V voltage supply. This represents a noise efficiency factor (NEF) of 4.7.

KW - Wheatstone bridge

KW - Energy-efficient

KW - Low noise power density

KW - Continuous time sigma delta modulator

U2 - 10.1109/IECON.2017.8216736

DO - 10.1109/IECON.2017.8216736

M3 - Conference contribution

SP - 4287

EP - 4291

BT - Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society

PB - IEEE

CY - Piscataway, NJ

T2 - IECON 2017

Y2 - 29 October 2017 through 1 November 2017

ER -

An Energy-Efficient Readout Method for Piezoresistive Differential Pressure Sensors

Abstract

Conference

Keywords

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