MONITORING OF FREQUENCY PARAMETERS OF OPERATIONAL AMPLIFIERS WHEN OPERATING
IN NON-STATIONARY THERMAL MODES 

Artamonov Dmitry Vladimirovich, doctor of technical sciences, first vice-rector, Penza State University (40 Krasnaya street, Penza, Russia), rtech@pnzgu.ru
Knyazkov Aleksandr Vladimirovich, engineer, Penza State University (40 Krasnaya street, Penza, Russia), rtech@pnzgu.ru
Parshukov Maksim Yur'evich, candidate of technical sciences, engineer, Penza State University (40 Krasnaya street, Penza, Russia), rtech@pnzgu.ru
Sapunov Evgeniy Vladimirovich, engineer, Penza State University (40 Krasnaya street, Penza, Russia), rtech@pnzgu.ru
Svetlov Anatoliy Vil'evich, doctor of engineering sciences, professor, head of sub-department of radio engineering and radio electronic systems, Penza State University (40 Krasnaya street, Penza, Russia), rtech@pnzgu.ru

621.317.3

10.21685/2307-5538-2017-4-5

Background. The necessity of monitoring the frequency parameters of operational amplifiers when operating in non-stationary thermal modes is substantiated with the aim of predicting the time of setting the operation mode of operational amplifiers after power-up and with the purpose of creating their macromodels for different temperatures within the operating temperature range.
Materials and methods. The research was carried out using the veloped meter of frequency parameters of operational amplifiers and a system for determining the calibration characteristics of the converter of the ratio of the amplitudes and phase difference of the signals.
Results. The structural diagrams of the meter of the frequency parameters of operational amplifiers, the technique of measuring the unity gain bandwidth of operational amplifiers, the method of predicting the settling time of operational amplifiers after power-up are given.
Conclusions. The possibility of using the developed frequency meter of the unity gain bandwidth of operational amplifiers for monitoring their parameters when operating in nonstationary thermal modes has been confirmed.

frequency parameters of operational amplifiers, non-stationary thermal mode, monitoring, measuring instrument, technique