Precision analog interfaces based on two multi-differential operational amplifier

Abstract

Precision analog interfaces based on two multi-differential operational amplifier

S.G. Krutchinsky, A.E. Titov, A.I. Serebryakov A.I. Gavlitsky, E.A. Semenishchev, I.V. Pakhomov

Incoming article date: 07.09.2013

The methods and results of designing instrumentation amplifiers multidifferential on two operational amplifiers that significantly reduce the voltage of zero drift circuit and its transfer efficiency of the common-mode voltage. In practical terms, these methods can solve the important task of building a precision analog interface for resistive bridge sensors, which operate over a wide temperature range. Also, it is possible to use multi-bit ADC with a significantly lower reference voltage. Keywords: mixed systems on a chip, instrumentation amplifiers, common-mode signal, multidifferential DU, voltage zero drift, temperature range, multibit ADC.

Keywords: mixed systems on a chip, instrumentation amplifiers, common-mode signal, multidifferential OA, voltage zero drift, temperature range, multibit ADC.