Keywords :
Common-mode rejection ratio; Electromagnetic interference; Instrumentation amplifier; Common modes; Electric inverters; Electric network analysis; Electromagnetic pulse; Electromagnetic wave interference; Electromagnetism; Instruments; Plastic molds; Signal interference; Electromagnetic compatibility
Abstract :
[en] 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. © 2008 IEEE.
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