NDLI: Widlar-Widlar total-current-reading temperature sensor

Content Provider	IEEE Xplore Digital Library
Author	Marinca, B.V.
Copyright Year	2011
Description	Author affiliation: Faculty of Electronics and Telecommunications, Applied Electronics Department, “Politehnica” University of Timişoara, Bd. Vasile Pârvan, Nr. 2, 300223, Timişoara (Marinca, B.V.)
Abstract	The paper presents the design of a CMOS integrated circuit whose total-current varies linearly with temperature. This temperature sensor uses two classical cross-connected current mirrors. The circuit has a simple load serial interconnection and low current consumption (25.5μA, measured at 20ºC). The design of the sensor was done using resistors with negative (NTC), null (ZTC) or positive (PTC) temperature coefficient values. We examined how the total output current varies with temperature, the maximum slope condition was estimated by analytical means and the maximum slope was computed. The schematic was designed to fit a maximum slope, thus resulting in a 4.46% error between the analytical and the simulated slope. The sensor's performance is showed by: the optimized total-current slope of 0.1085μA/ºC; the total-current percentage slope of $0.33443·10^{−6}%/ºC;$ minimum voltage supply of 2.3V; nonlinearity of 0.78% and the area occupied on the chip is also small: $1.646μm^{2}.$
Starting Page	1
Ending Page	6
File Size	1260201
Page Count	6
File Format	PDF
ISBN	9781457703157
ISSN	18037232
e-ISBN	9788070439302
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-07
Publisher Place	Czech Republic
Access Restriction	Subscribed
Rights Holder	University of West Bohemi
Subject Keyword	Temperature sensors Resistors Temperature measurement Strontium Simulation Mirrors Transistors
Content Type	Text
Resource Type	Article

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