V.V. Maslennikov − Ph.D (Eng.), Professor, 

Department of «Electronic measuring systems», 

National Research Nuclear University «MEPhI» (Moscow)

E-mail: vmaslennikov@mail.ru

G.M. Orzumamadov − Post-graduate Student,  Department of «Electronic measuring systems», 

National Research Nuclear University «MEPhI» (Moscow)

E-mail: orzumamadov.gm@gmail.com

The purpose of this study is to develop active filters with extended dynamic and frequency ranges performed on a single operational amplifier. The article discusses the problems of expanding the dynamic ranges of potentially stable and potentially unstable networks, and the problems of expanding the frequency ranges of potentially unstable networks. 

Scientific novelty of this study lies in a new method for the analysis of characteristic equations, which allows one to obtain corrective elements that, when used, expand the frequency and dynamic ranges of active networks. 

As a result of the study, conditions were obtained for the selection of feedback elements of potentially stable and potentially unstable networks, which lead to an expansion of the dynamic range. Methods for introducing corrective capacitors and resistors are described, which lead to the expansion of the frequency range of potentially unstable networks made on the chips of operational  amplifiers.

Practical significance. Using the recommendations of the article will allow one to design active filters with maximum dynamic and  frequency ranges.

1. Rentjuk V. Proektirovanie aktivnyh fil'trov v sisteme Webench Designer Center. Komponenty i tehnologii. 2014. № 2. S. 109-114 (In Russian).
2. Maslennikov V.V., Dovgopolaja E.A. Chastotnyj diapazon aktivnyh fil'trov vtorogo porjadka na mikroshemah operacionnyh usilitelej. Radiotehnika. 2014. № 12. S. 57-63 (In Russian).
3. Kiruthiga S., Venkateshkumar U., Navinkumar M., Gokul M. Design of FGMOS based op-amp and its implementation in low pass filter and bandpass filter. Test Engineering and Management. 2020. V. 83. Р. 3708-3713.
4. Titce U. Shenk K. Poluprovodnikovaja shemotehnika: Spravoch. rukovodstvo. Per. s nem. Izd. 12-e. M.: Dodjeka XXI. 2015. 827 s. (In Russian).
5. Aktivnye izbiratel'nye ustrojstva radioapparatury. Pod red. V.V. Maslennikova. M.: Mir. 1984. 320 s. (In Russian).
6. Maslennikov V.V., Orzumamadov G.M. Rasshirenie chastotnogo diapazona aktivnyh zven'ev vtorogo porjadka, vypolnennyh na mikroshemah operacionnyh usilitelej. Vestnik NIJaU «MIFI». 2017. T. 6. № 5. S. 473-478 (In Russian).
7. Maslennikov V.V. Metod priblizhennogo opredelenija kornej kubicheskogo uravnenija s polozhitel'nymi kojefficientami i kompleksnosoprjazhennymi kornjami. Vestnik NIJaU «MIFI». 2015. T. 4. № 2. S. 173-183 (In Russian).