A low-power asynchronous ECG acquisition system in CMOS technology

Author

Hwang, Sungkil ; Trakimas, Michael ; Sonkusale, Sameer

Author_Institution

Nanoscale Integrated Sensors & Circuits Lab., Tufts Univ., Medford, MA, USA

fYear

2010

fDate

Aug. 31 2010-Sept. 4 2010

Firstpage

5262

Lastpage

5265

Abstract

An asynchronous electrocardiogram (ECG) acquisition system is presented for wearable ambulatory monitoring. The proposed system consists of a low noise front-end amplifier (AFE) with tunable bandwidth, an asynchronous analog-to-digital converter (ADC), and digital signal processing (DSP). Data compression is achieved by the inherent signal dependent sampling rate of the asynchronous architecture. This makes the system attractive for compact wearable ECG monitoring applications. The AFE and ADC were fabricated in a 0.18μm CMOS technology and consume a total of 79μW. Measured results demonstrating ECG monitoring are presented.

Keywords

CMOS integrated circuits; amplifiers; analogue-digital conversion; biomedical equipment; data acquisition; data compression; digital signal processing chips; electrocardiography; medical signal processing; CMOS technology; asynchronous ADC; asynchronous analog-digital converter; compact wearable ECG monitoring; data compression; digital signal processing; low noise front end amplifier; low power asynchronous ECG acquisition system; power 79 muW; signal dependent sampling rate; tunable bandwidth front end amplifier; wearable ambulatory monitoring; Bandwidth; Cutoff frequency; Digital signal processing; Electrocardiography; Monitoring; Noise; Signal resolution; Amplifiers, Electronic; Analog-Digital Conversion; Electric Power Supplies; Electrocardiography; Electronics, Medical; Humans; Metals; Oxides; Semiconductors; Signal Processing, Computer-Assisted;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2010 Annual International Conference of the IEEE

Conference_Location

Buenos Aires

ISSN

1557-170X

Print_ISBN

978-1-4244-4123-5

Type

conf

DOI

10.1109/IEMBS.2010.5626292

Filename

5626292