Title :
A fully integrated physical activity sensing circuit for implantable pacemakers
Author :
Arnaud, Alfredo ; Galup-Montoro, Carlos
Author_Institution :
GME-IIE, Univ. de la Republica, Montevideo, Uruguay
Abstract :
This paper shows the implementation of a fully integrated Gm-C 0.5-7 Hz bandpass filter-amplifier with gain G=400, for a piezoelectric accelerometer which is part of a rate adaptive pacemaker. The fabricated circuit operates up to 2 V power supply, consumes only 230 nA current, and achieves 2.1 μVrms input noise. Detailed circuit specifications, measurements, and a comparative analysis of the system performance are presented.
Keywords :
CMOS integrated circuits; accelerometers; amplifiers; analogue integrated circuits; band-pass filters; integrated circuit design; low-power electronics; medical signal processing; pacemakers; piezoelectric transducers; 2 V; 230 nA; CMOS; analogue integrated circuit; bandpass filter amplifier; implantable pacemakers; integrated physical activity sensing circuit; piezoelectric accelerometer; rate adaptive pacemaker; signal conditioning; Accelerometers; Band pass filters; Battery charge measurement; Biomedical measurements; Energy consumption; Heart; Integrated circuit measurements; Integrated circuit reliability; Pacemakers; Permission;
Conference_Titel :
Integrated Circuits and Systems Design, 2004. SBCCI 2004. 17th Symposium on
Print_ISBN :
1-58113-947-0
DOI :
10.1109/SBCCI.2004.240770
