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Evaluation of operational amplifier immunity by means of Weibull distribution
Fernández García, Raúl; Gil Galí, Ignacio
Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. TIEG - Grup d'Electrònica Industrial Terrassa
The immunity of operational amplifiers is a trend topic for electromagnetic compatibility EMC community. Radiofrequency interference is usually applied to the operation amplifier and the voltage offset is monitored as a parameter to evaluate the EMC degradation. However, this method does not provide enough information to know the probability of failure to electromagnetic interference of the devices. In this paper, an alternative statistical analysis based on the Weibull distribution is used to analyze the electromagnetic immunity performance of operational amplifiers under different frequency interferences and modulation index. The results confirm the feasibility of the Weibull distribution to evaluate the radiofrequency interference RFI behavior.
Peer Reviewed
Audio Amplifiers
Power amplifiers
Radio frequency
Operational amplifier
Weibull distribution
electromagnetic interference
Ràdio--Freqüència modulada
Amplificadors de potència
Weibull distribution
immunity testing
operational amplifiers
radiofrequency interference
Institute of Electrical and Electronics Engineers (IEEE)

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