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The main parameters and equations of basic configurations multidifferential operational amplifiers with high impedance node

Authors
 Prokopenko N.N.
 Butyrlagin N.V.
 Pakhomov I.V.
Date of publication
 2014

Abstract
 Researched multidifferential operational amplifier (m-OpAmp) with a single high-impedance node. Obtained the basic equations that simplify calculation parameters of analog-digital interfaces based on it. Consider properties the basic circuits incorporating m-OpAmp with the influence of the loop gain. Determined the coefficients of transmission and the input resistance of these circuits under identical and non-identical conductivities transmission input transducers "voltage-current" m-OpAmp.
It is shown that a single chip m-OpAmp allows without feedback resistors to provide a high input impedance and wide enough spectrum identical characteristics for inverting and noninverting inclusionsand different transfer ratio (1, -1, 2, -2, 1.5; 3, 0.5, -0.5). Designates way improving speed performance m-OpAmp, reduce offset voltage, and increasing the loop gain.
Keywords
 multidifferential operational amplifiers, different differential amplifiers, analog inverters and adders signal, zero level, speed performance, loop gain
Library reference
 Prokopenko N.N., Butyrlagin N.V., Pakhomov I.V. The main parameters and equations of basic configurations multidifferential operational amplifiers with high impedance node // Problems of Perspective Micro- and Nanoelectronic Systems Development - 2014. Proceedings / edited by A. Stempkovsky, Moscow, IPPM RAS, 2014. Part 3. P. 111-116.
URL of paper
 http://www.mes-conference.ru/data/year2014/pdf/D126.pdf

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