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Metrology and Measurement Systems

Tytuł artykułu

Excitation-independent constant conductance ISFET driver

Autorzy Kokot, M.  Ossowski, T. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN A new constant conductance driver for ISFETs sensors has been developed. The proposed circuit maintains the sensor operating point at constant drain-source conductance. The combination of a simple, self-balancing resistance bridge and the subtraction of half (or similar fraction) of source-drain voltage from the gate-source voltage provides independence of the output signal from current and voltage drivers instability. The use of precision current sources or high class operating amplifiers is not required. The operating point depends on precision bridge resistors only. The driver presented here simplifies applications of ISFET sensors in battery-powered handheld devices without the accuracy trade-off which the second part of the paper shows.
Słowa kluczowe
EN ISFET   constant conductance driver   self-balancing resistance bridge   operating point stability  
Wydawca Komitet Metrologii i Aparatury Naukowej PAN
Czasopismo Metrology and Measurement Systems
Rocznik 2009
Tom Vol. 16, nr 4
Strony 631--639
Opis fizyczny Bibliogr. 17 poz., rys., tab., wykr.
autor Kokot, M.
autor Ossowski, T.
  • Gdansk University of Technology, Faculty of Electronics, Telecommunication and Informatics, G. Narutowicza 11/12, 80-952 Gdańsk, Poland,
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