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IEICE TRANSACTIONS on Electronics

Watch-Dog Circuit for Quality Guarantee with Subthreshold MOSFET Current

Tetsuya HIROSE, Ryuji YOSHIMURA, Toru IDO, Toshimasa MATSUOKA, Kenji TANIGUCHI

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Summary :

We propose an ultra low power watch-dog circuit with the use of MOSFETs operation under subthreshold characteristics. The circuit monitors the amount of the product degradation because the subthreshold current of MOSFET emulates the rate of the general chemical reaction. Its operation was verified with both SPICE simulation and the measurement of the prototype chip. The new circuit embedded in a tag attached to any product could dynamically monitor the degradation regardless of storage conditions.

Publication
IEICE TRANSACTIONS on Electronics Vol.E87-C No.11 pp.1910-1914
Publication Date
2004/11/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Section on New System Paradigms for Integrated Electronics)
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