A unified high accuracy behavioral SPICE macromodel of operational amplifiers featuring the frequency, temperature and power supply influences and the Monte Carlo simulation

Author(s):  
A. Maxim ◽  
D. Andreu
2018 ◽  
Vol 108 (05) ◽  
pp. 339-344
Author(s):  
T. Kuhlmann ◽  
A. Sauer

Industrieunternehmen müssen sich auf die anstehenden Turbulenzen des Energiemarktes sowie weitreichende Entwicklungen wie etwa die Elektromobilität einstellen. Die Bewertung möglicher Maßnahmen zur Begegnung dieser Wandlungstreiber ist eine große Herausforderung für Fabrikplaner. Die vorgestellte Bewertungsmethode basiert auf der Regressionsanalyse in Verbindung mit einer Monte-Carlo Simulation und ist geeignet wandlungsbefähigende Maßnahmen trotz Planungsunsicherheit zu bewerten.   Industrial power supply systems must adapt to impending turbulence on the energy market as well as to influencing developments such as e-mobility. Assessing possible measures to cope with these changes is a big challenge for planners of industrial facilities. The presented assessment method is based on regression analysis in combination with Monte Carlo simulation and is suitable for evaluating measures that promote agility despite planning uncertainties.


2019 ◽  
Vol 28 (03) ◽  
pp. 1950047 ◽  
Author(s):  
Guo-Cheng Huang ◽  
Hai-Gang Yang ◽  
Tao Yin ◽  
Xiao-Dong Xu ◽  
Yuan-Ming Zhu

This paper presents a novel low-voltage bandgap reference with improved power supply rejection (PSR). The proposed circuit adopts a complementary loop locking approach for stabilizing the drain-source voltages of the current mirrors, which gives rise to a boost of the PSR performance by more than 30[Formula: see text]dB over [Formula: see text]–110∘C and at 1-V supply. An analysis shows that the PSR of the proposed bandgap reference is typically characterized with its insensitivity to temperature variations. The circuit is designed with a commercial 0.18-[Formula: see text]m CMOS process. The experiment results of Monte Carlo simulation demonstrate that the average PSR with 1-V supply is [Formula: see text][Formula: see text]dB at DC and is [Formula: see text][Formula: see text]dB at 1[Formula: see text]kHz (attained under a room temperature condition of 27∘C). And the temperature coefficient of the DC-based PSR is about 0.83%/∘C at 1-V supply, significantly decreased by three–six folds compared to other conventional designs. The quiescent current consumed is only about 13.5[Formula: see text][Formula: see text]A.


2021 ◽  
Vol 11 (11) ◽  
pp. 4931
Author(s):  
Phong H. Nguyen ◽  
Massimo Boninsegni

We present results of large-scale Monte Carlo simulations of the 2D classical x-y model on the square lattice. We obtain high accuracy results for the superfluid fraction and for the specific heat as a function of temperature, for systems of size L×L with L up to 212. Our estimate for the superfluid transition temperature is consistent with those furnished in all previous studies. The specific heat displays a well-defined peak, whose shape and position are independent of the size of the lattice for L>28, within the statistical uncertainties of our calculations. The implications of these results on the interpretation of experiments on adsorbed thin films of 4He are discussed.


2014 ◽  
Vol 960-961 ◽  
pp. 1512-1515 ◽  
Author(s):  
Vladislav Petrovich Oboskalov ◽  
Irina Lvovna Kirpikova ◽  
Stanislava Matugova ◽  
Sergey Aleksandrovich Gusev

This paper presents an iterative power system balance reliability calculating technique ensuring better convergence and faster calculations. The technique is called "supplied demand". Nodal power imbalance is considered as the primary stochastic value under analysis. An analytical solution does not contain probability density functions. It results in faster calculations. Results were verified by Monte Carlo Simulation and showed high accuracy of the technique.


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