Drain Current Zero-Temperature-Coefficient Point for CMOS Temperature-Voltage Converter Operating in Strong Inversion

Hidetoshi IKEDA  Kawori TAKAKUBO  Hajime TAKAKUBO  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E87-A   No.2   pp.370-375
Publication Date: 2004/02/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
zero-temperature-coefficient point of drain current,  temperature-voltage converter,  voltage reference,  temperature sensor,  

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Summary: 
Temperature dependence of drain current is analyzed in detail in terms of mobility and threshold voltage. From the analyses, it is proved that a point exists that the drain current is fixed without depending on temperature when the MOSFET operates in strong inversion. Applying this characteristic, a CMOS temperature-voltage converter operating in strong inversion with high linearity is proposed. SPICE simulation and experimental results are shown, and the corresponding performances are discussed.