Title :
Efficient reduction of electromagnetic interference effects in operational amplifiers
Author :
Walravens, C. ; van Winckel, S. ; Redouté, J.M. ; Steyaert, M.
Author_Institution :
Dept. of Electr. Eng., KU Leuven
Abstract :
When subjected to electromagnetic interference, an operational amplifier will generate a DC offset. A thorough comparison between two approaches to reduce this offset is presented. Through mathematical deduction and simulations, it is shown that placing a lowpass filter at the input differential pair is superior to a double differential pair compensation topology
Keywords :
electromagnetic interference; low-pass filters; network topology; operational amplifiers; DC offset; EMI effects; differential pair compensation topology; electromagnetic interference; input differential pair; lowpass filter; operational amplifiers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20073026
