Title :
Current-feedback operational amplifier with high CMRR
Author :
Tammam, A.A. ; Hayatleh, K. ; Hart, B. ; Lidgey, F.J.
Author_Institution :
Sch. of Technol., Oxford Brookes Univ., UK
Abstract :
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.
Keywords :
bipolar analogue integrated circuits; differential amplifiers; feedback amplifiers; operational amplifiers; 200 muV; DC offset voltage; common-mode rejection ratio; current feedback operational amplifier; current transfer cell; current-feedback op amp; high CMRR; input stage;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030995
