Title :
Design of a micropower signal conditioning circuit for a piezoresistive acceleration sensor
Author :
Arnaud, Alfredo ; Barú, Marcelo ; Picún, Gonzalo ; Silveira, Fernando
Author_Institution :
Inst. de Ingenieria Electr., Univ. de la Republica, Montevideo, Uruguay
Abstract :
The design and test of a micropower signal conditioning circuit for a piezoresistive accelerometer is presented. The circuit is intended for sensing human body motion in rate-adaptive cardiac pacemakers. A strategy is proposed to allow handling of the piezoresistive sensor with the desired level of consumption. Experimental results show the fabricated circuit is able to measure accelerations in the range from 0.04 g to 0.34 g with a total consumption of less than 3 μA with supply voltages down to 2 V
Keywords :
CMOS analogue integrated circuits; accelerometers; pacemakers; piezoresistive devices; signal processing equipment; 2 V; 3 muA; acceleration sensor; human body motion; micropower signal conditioning circuit; piezoresistive accelerometer; rate-adaptive cardiac pacemakers; Acceleration; Circuit testing; Humans; Integrated circuit measurements; Life estimation; Microelectronics; Pacemakers; Piezoresistance; Signal design; Threshold voltage;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.704364
