Title :
A multi-parameter bio-electric ASIC sensor with integrated 2-wire data transmission protocol for wearable healthcare system
Author :
Yang, Geng ; Chen, Jian ; Jonsson, Fredrik ; Tenhunen, Hannu ; Zheng, Li-Rong
Author_Institution :
iPack Center, R. Inst. of Technol. (KTH), Stockholm, Sweden
Abstract :
This paper presents a fully integrated application specific integrated circuit (ASIC) sensor for the recording of multiple bio-electric signals. It consists of an analog front-end circuit with tunable bandwidth and programmable gain, a 6-input 8-bit successive approximation register analog to digital converter (SAR ADC), and a reconfigurable digital core. The ASIC is fabricated in a 0.18-μm 1P6M CMOS technology, occupies an area of 1.5 × 3.0 mm2, and totally consumes a current of 16.7 μA from a 1.2 V supply. Incorporated with the ASIC, an Intelligent Electrode can be dynamically configured for on-site measurement of different bio-signals. A 2-wire data transmission protocol is also integrated on chip. It enables the serial connection over a group of Intelligent Electrodes, thus minimizes the number of connecting cables. A wearable healthcare system is built upon a printed Active Cable and a scalable number of Intelligent Electrodes. The system allows synchronous processing of maximum 14-channel bio-signals. The ASIC performance has been successfully verified in in-vivo bio-electric recording experiments.
Keywords :
CMOS analogue integrated circuits; CMOS digital integrated circuits; analogue integrated circuits; application specific integrated circuits; bioelectric potentials; biomedical electrodes; biomedical electronics; biosensors; data communication equipment; health care; intelligent sensors; lab-on-a-chip; wearable computers; 1P6M CMOS technology; 6-input 8-bit successive approximation register analog; analog front-end circuit; chip; current 16.7 muA; digital converter; fully integrated application specific integrated circuit sensor; integrated 2-wire data transmission protocol; intelligent electrode; maximum 14-channel biosignal synchronous processing; multiparameter bioelectric ASIC sensor; multiple bioelectric signal recording; printed active cable; programmable gain; reconfigurable digital core; serial connection; tunable bandwidth; voltage 1.2 V; wearable healthcare system; Application specific integrated circuits; Bandwidth; Capacitors; Electrodes; Electroencephalography; Gain; Noise; Active Cable; Bio-electric ASIC; Intelligent Electrode; multi-parameter biosensor; wearable healthcare system;
Conference_Titel :
Design, Automation & Test in Europe Conference & Exhibition (DATE), 2012
Conference_Location :
Dresden
Print_ISBN :
978-1-4577-2145-8
DOI :
10.1109/DATE.2012.6176512
