PRECISING COMPLEX-COMPENSATED CURRENT REFERENCE BASED ON DIFFERENTIAL MODE OF CURRENTS

2012 ◽  
Vol 21 (07) ◽  
pp. 1250059 ◽  
Author(s):  
L. F. SHI ◽  
Y. ZHAO ◽  
W. G. JIA ◽  
L. Y. CHENG ◽  
X. Q. LAI
Keyword(s):  
Temperature Coefficient ◽  
Temperature Compensation ◽  
Negative Temperature Coefficient ◽  
Supply Voltage ◽  
Negative Temperature ◽  
Differential Mode ◽  
Temperature Coefficients ◽  
Current Reference ◽  
Nonlinear Temperature ◽  
A Current

A current reference with complex compensation using negative temperature coefficient of multiple currents is proposed. The principle of compensation is introduced in detail. This work generates two different compensated currents in the whole temperature range, which is different from the traditional curvature-compensated circuit. The compensation is achieved by using difference of the negative temperature coefficients. Piecewise curvature-compensation and higher order nonlinear temperature compensation are applied at the same time. The proposed circuit is simple and easy to implement. Results of simulation with HSPICE show that the achieved temperature coefficient is only 34.2 ppm/°C compared with 364 ppm/°C under 1 μm BCD process, which is unnecessary to compensate in the range of -25°C ∼ 125°C at 5 V supply voltage.

The Master Equation for the Dissociation of a Dilute Diatomic Gas. X. How Rotation Causes Low Arrhenius Temperature Coefficients

1973 ◽  
Vol 51 (18) ◽  
pp. 3152-3155 ◽  
Author(s):  
Huw O. Pritchard
Keyword(s):  
Low Temperature ◽  
Temperature Coefficient ◽  
Rate Constants ◽  
Recombination Rate ◽  
Negative Temperature Coefficient ◽  
Negative Temperature ◽  
Equilibrium Form ◽  
Temperature Coefficients ◽  
Recombination Rate Constant ◽  
Arrhenius Temperature

It is shown that previously calculated nonequilibrium rate constants for the dissociation of H2 and D2 appear to approach a rotationally averaged equilibrium expression at low temperature. This equilibrium form of the rate expression itself has an Arrhenius temperature coefficient for dissociation which is significantly less than the dissociation energy, and the corresponding recombination rate constant has a negative temperature coefficient. The reasons for this are explained.

Suppressing the negative temperature coefficient effect of resistance in polymer composites with positive temperature coefficients of resistance by coating with parylene

2020 ◽  
Vol 8 (22) ◽  
pp. 7304-7308 ◽  
Author(s):  
Chihiro Okutani ◽  
Tomoyuki Yokota ◽  
Ryotaro Matsukawa ◽  
Takao Someya
Keyword(s):  
Temperature Coefficient ◽  
Polymer Composites ◽  
Negative Temperature Coefficient ◽  
Negative Temperature ◽  
Positive Temperature Coefficient ◽  
Positive Temperature ◽  
Temperature Coefficients ◽  
Ntc Effect

Thin parylene coating suppressed the negative temperature coefficient (NTC) effect of polymer thermistors with a positive temperature coefficient (PTC) while maintaining the PTC characteristics.

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