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An instrumentation amplifier input circuit with a high immunity to EMI

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2 Author(s)
Redoute, J.-M. ; Dept. ESAT-MICAS, Katholieke Univ. Leuven, Leuven ; Steyaert, M.

This paper presents an instrumentation amplifier input circuit exhibiting a high degree of immunity against conducted common-mode electromagnetic interferences (EMI) which are injected into its inputs. The proposed input circuit achieves a high common-mode EMI rejection by minimizing the impact of mismatch. A case study illustrates the theoretical analyses, and evaluates the superior performances of the proposed input structure by comparing these to the results which are obtained using a classic approach.

Published in:

Electromagnetic Compatibility - EMC Europe, 2008 International Symposium on

Date of Conference:

8-12 Sept. 2008