Title :
A 1-V 450-nW fully integrated biomedical sensor interface system
Author :
Xu, Xiaoyuan ; Zou, Xiaodan ; Yao, Libin ; Lian, Yong
Author_Institution :
Dept. of ECE, Nat. Univ. of Singapore, Singapore
Abstract :
This paper presents a 1 V 450 nW fully integrated bio-signal acquisition IC in 0.35 mum CMOS technology which includes a tunable band-pass filter, a variable gain amplifier, and a 12-bit ADC. The ultra-low power is achieved by using an energy-efficient system architecture and a novel tunable band-pass filter. The measurement shows that the overall system draws only 445 nA current from a 1 V supply in the detection mode and 895 nA in the diagnosis mode for electrocardiogram (ECG) applications.
Keywords :
CMOS integrated circuits; amplifiers; analogue-digital conversion; band-pass filters; biosensors; electrocardiography; medical signal detection; CMOS technology; analogue-digital conversion; bio-signal acquisition; diagnosis mode; electrocardiogram; integrated biomedical sensor; power 450 nW; size 0.35 mum; tunable band-pass filter; ultra-low power; variable gain amplifier; voltage 1 V; word length 12 bit; Band pass filters; Bandwidth; Biosensors; Gain; Integrated circuit noise; Low-noise amplifiers; Operational amplifiers; Switches; Tunable circuits and devices; Voltage control;
Conference_Titel :
VLSI Circuits, 2008 IEEE Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-1804-6
Electronic_ISBN :
978-1-4244-1805-3
DOI :
10.1109/VLSIC.2008.4585959
