title: A low-power asynchronous ECG acquisition system in CMOS technology.
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 0.18 microm CMOS technology and consume a total of 79 microW. Measured results demonstrating ECG monitoring are presented.
authors.affiliation: Nanoscale Integrated Sensors and Circuits Laboratory, Tufts University, Medford, MA 02155, USA.
authors.forename: Sungkil
authors.initials: S
authors.lastname: Hwang
authors.forename: Michael
authors.initials: M
authors.lastname: Trakimas
authors.forename: Sameer
authors.initials: S
authors.lastname: Sonkusale
mesh_terms: D000669:Amplifiers, Electronic; D000703:Analog-Digital Conversion; D011211:Electric Power Supplies; D004562:Electrocardiography / Q000295:instrumentation*; D004582:Electronics, Medical / Q000379:methods*; D006801:Humans; D008670:Metals / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D012666:Semiconductors / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted
chemical_list: D008670:Metals; D010087:Oxides