On the effectiveness of EMIRR to qualify OpAmps

Abstract

This paper discusses the pros and cons of the EMIRR, a parameter used to indicate the susceptibility of Operational Amplifiers to ElectroMagnetic Interference. Such a parameter is defined assuming a quadratic relationship between the interference amplitude and the EMI-induced offset. This work shows through analyses and experimental tests that such an assumption is valid only in particular cases, meaning that the application of the EMIRR is limited.