DEVELOPMENT OF AN INTEGRATING ANALOG-DIGITAL CONVERTER WITH OVERSAMPLING WITH INTERMEDIATE
WIDTH-PULSE MODULATION IN THE COMPOSITION OF INFORMATION-MEASURING SYSTEMS 

Korotkov Aleksey Aleksandrovich, postgraduate student, Penza State University (40 Krasnayа street, Penza, Russia); design engineer of the 2nd category, Research Institute of Electronic and Mechanical Devices (4 Karakozova street, Penza, Russia), E-mail: lexifer@mail.ru 

681.325.3 

10.21685/2307-5538-2020-3-7 

Background. The article discusses the issues associated with the selection of a technical analogue from the subclass ΣΔ-ADC, which satisfies the technical requirements for IMS and solving the design problem of Σ-ADC, which implements one of the options for pulse modulation, as close as possible to the characteristics of the technical analogue.
Materials and methods. To select a technical analogue, a ΣΔ-ADC was systematized and an expert system was formed with an integrated database. To develop a simulation model that matches the parameters of a technical analog, the NI Multisim 12.0 software environment was used.
Results. A simulation model of an integrating analog-to-digital converter with signal oversampling with intermediate pulse-width modulation as part of information-measuring systems is developed. The main parameters of the developed model coincide with the parameters of a foreign technical analogue.
Conclusions. According to the dichotomous systematization, the developed Multisim-model ΣТ-ADC belongs to the class 1-1-1, i.e. with correction, with circuit elements close to real, realizable. 

integrating analog-to-digital converter, pulse-width modulation of the signal, error from edge effects, technical analogue, simulation model