A 1V low power second-order delta-sigma modulator for biomedical signal applicaion

Author

Chih-han Hsu ; Kea-Tiong Tang

Author_Institution

Nat. Tsing-Hua Univ., Hsinchu, Taiwan

fYear

2013

fDate

3-7 July 2013

Firstpage

2008

Lastpage

2011

Abstract

This paper presents the design and implementation of a low-power delta-sigma modulator for biomedical application with a standard 90nm CMOS technology. The delta-sigma architecture is implemented as 2nd order feedforward architecture. A low quiescent current operational transconductance amplifier (OTA) is utilized to reduce power consumption. This delta-sigma modulator operated in 1V power supply, and achieved 64.87 dB signal to noise distortion ratio (SNDR) at 10 KHz bandwidth with an oversampling ratio (OSR) of 64. The power consumption is 17.14 μW, and the figure-of-merit (FOM) is 0.60 pJ/conv.

Keywords

CMOS integrated circuits; delta-sigma modulation; medical signal processing; operational amplifiers; power consumption; signal denoising; 2nd order feedforward architecture; OTA; bandwidth 10 kHz; biomedical signal applicaion; delta-sigma architecture; figure-of-merit; low power second-order delta-sigma modulator; low quiescent current operational transconductance amplifier; oversampling ratio; power 17.14 muW; power consumption; power supply; signal-noise distortion ratio; standard CMOS technology; voltage 1 V; Band-pass filters; Digital filters; Feedforward neural networks; Modulation; Noise; Passive filters; Power demand;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2013 35th Annual International Conference of the IEEE

Conference_Location

Osaka

ISSN

1557-170X

Type

conf

DOI

10.1109/EMBC.2013.6609924

Filename

6609924