Title :
Design and implementation of microsensor system
Author :
Lin, Chii-Wann ; Shao-Cheng Wang ; Chen, Oscal T C ; Wang, Shao-Cheng
Author_Institution :
Center for Biomed. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
The design, implementation and characterization of a microsensor system for electrochemical measurements are introduced. This microsensor system consists of an electrochemical cell, amplifier, switches for miniature applications. Currently, we use a single chip microprocessor (80C51), an ADC (ADC0804) and seven-segment display for portable instrument prototype. The proposed microsensor is implemented by using the UMC 0.5 μm CMOS technology with a die size of 1.0 mm×1.0 mm. The electrode area is 600 μm×800 μm. The unique design of a feedback voltage controlled resistor allows a flexible dynamic range for linear conversion of the induced current in various applications
Keywords :
CMOS integrated circuits; biomedical electrodes; biomedical electronics; biosensors; electrochemical electrodes; electrochemical sensors; microelectrodes; microsensors; 0.5 micron; ADC; CMOS technology; amperometric sensor; blood glucose detection; design; electrochemical cell; electrochemical measurements; feedback voltage controlled resistor; flexible dynamic range; implementation; induced current; linear conversion; microelectrode; microsensor system; miniature applications; op amp; portable instrument; seven-segment display; single chip microprocessor; CMOS technology; Displays; Electrodes; Feedback; Instruments; Microprocessors; Microsensors; Prototypes; Semiconductor device measurement; Switches;
Conference_Titel :
Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-4262-3
DOI :
10.1109/IEMBS.1997.758813
