Metting van Rijn A C, Peper A, Grimbergen C A
Laboratory of Medical Physics, University of Amsterdam, The Netherlands.
IEEE Trans Biomed Eng. 1991 Nov;38(11):1154-7. doi: 10.1109/10.99079.
Galvanic isolation of a patient during a bioelectric recording is necessary to ensure the safety of the patient. In a typical measurement situation high interference voltages may be present across the isolation barrier. In this paper the necessity of a very high isolation mode rejection ratio--the ability of the amplifier to suppress feed-through from voltages across the isolation barrier to the output--is argued and a design of a multichannel amplifier with an isolation mode rejection ratio of 160 dB is described.
