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Applications of SPICE for modeling miniaturized biomedical sensor systems

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2 Author(s)
Mundt, C.W. ; NASA Ames Res. Center, Moffett Field, CA, USA ; Nagle, H.T.

This paper proposes a model for a miniaturized signal conditioning system for biopotential and ion-selective electrode arrays. The system consists of three main components: sensors, interconnections, and signal conditioning chip. The model for this system is based on SPICE. Transmission-line based equivalent circuits are used to represent the sensors, lumped resistance-capacitance circuits describe the interconnections, and a model for the signal conditioning chip is extracted from its layout. In conclusion, a system for measurements of biopotentials and ionic activities can be miniaturized and optimized for cardiovascular applications based on the development of an integrated SPICE system model of its electrochemical, interconnection, and electronic components.

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Biomedical Engineering, IEEE Transactions on  (Volume:47 ,  Issue: 2 )