MULTI-CHANNEL DIGITAL-ANALOG SYSTEM BASED ON CURRENT-CURRENT CONVERTERS


Abstract

An approach to building a multi-channel digital-analog system is proposed, in which, unlike the known ones, a code-current converter, a controlled current generator, and also a current communication block are used. For a given accuracy, this saves on the analog system equipment. It has been shown that the proposed principle of building a controlled current source in the form of a highly linear push-pull amplifier – current scalar on bipolar transistors with a grounded load – has a high output resistance and wide bandwidth, which allows the use of current switching to implement the multi-channel system mode.


Keywords

DAC; frequency response; phase response; linearity error of the transfer characteristic

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Published : 2020-12-19


Azarov, O., Heneralnytskyi, Y., & Rybko, N. (2020). MULTI-CHANNEL DIGITAL-ANALOG SYSTEM BASED ON CURRENT-CURRENT CONVERTERS. Informatyka, Automatyka, Pomiary W Gospodarce I Ochronie Środowiska, 10(4), 43-46. https://doi.org/10.35784/iapgos.2082

Olexiy Azarov  azarov2@vntu.edu.ua
Vinnitsa National Technical University  Ukraine
http://orcid.org/0000-0002-8501-1379
Yevhenii Heneralnytskyi 
Vinnitsa National Technical University  Ukraine
http://orcid.org/0000-0003-0205-382X
Nataliia Rybko 
Vinnitsa National Technical University  Ukraine
http://orcid.org/0000-0002-6968-3044