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Current-feedback operational amplifier with high CMRR

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4 Author(s)
A. A. Tammam ; Sch. of Technol., Oxford Brookes Univ., UK ; K. Hayatleh ; B. Hart ; F. J. Lidgey

A novel current-feedback operational amplifier, the input stage of which is based on the design and use in a repeated pattern of a current-transfer cell, exhibits performance characteristics superior to those obtained with an established input architecture: in particular, the common-mode rejection ratio (CMRR) is 105 dB, and the DC offset voltage less than 200 μV.

Published in:

Electronics Letters  (Volume:39 ,  Issue: 21 )