A temperature-insensitive instrumentation amplifier using CCTA-based voltage to current converter

Abstract

This article describes an instrumentation amplifier (IA), which is temperature-insensitive using principle of voltage to current converter based on current conveyor transconductance amplifier (CCTA). It comprises 2 CCTAs and 3 resistors. The voltage gain can be electronically adjusted via input bias current of the CCTA and/or resistor. Additionally, the presented circuit behavior is ideally temperature-insensitive, suitable to apply in a temperature control/measurement work. The PSpice simulation results insist that the proposed IA offers power consumption of 1.16mW at ±1.5V power supplies. Performances of the proposed circuit are investigated, they are in accordant to theoretical expectations.