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Author

Bien, Franklin
Bien’s Integrated Circuit Design Lab (BICDL)
Research Interests
  • Wireless Power Transfer(WPT), touch screen, finger print, RADAR, RF IC.

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A Multi-Purpose Fingerprint Readout Circuit Embedding Physiological Signal Detection

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Title
A Multi-Purpose Fingerprint Readout Circuit Embedding Physiological Signal Detection
Author
Eom, Won-JinKim, Sung-WooPark, KyeonghwanBien, FranklinKim, Jae Joon
Keywords
Multi-sensor interface; fingerprint sensor; physiological sensor; readout integrated circuit, dual-mode operation
Issue Date
201612
Publisher
IEEK PUBLICATION CENTER
Citation
JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, v.16, no.6, pp.793 - 799
Abstract
A multi-purpose sensor interface that provides dual-mode operation of fingerprint sensing and physiological signal detection is presented. The dual-mode sensing capability is achieved by utilizing inter-pixel shielding patterns as capacitive amplifier’s input electrodes. A prototype readout circuit including a fingerprint panel for feasibility verification was fabricated in a 0.18 mm CMOS process. A single-channel readout circuit was implemented and multiplexed to scan two- dimensional fingerprint pixels, where adaptive calibration capability against pixel-capacitance variations was also implemented. Feasibility of the proposed multi-purpose interface was experimentally verified keeping low-power consumption less than 1.9 mW under a 3.3 V supply.
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ISSN
1598-1657
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ECE_Journal Papers

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