Title :
Differential current input cell with common mode feedback
Author :
Payne, A. ; Toumazou, C. ; Ryan, P.
Author_Institution :
Dept. of Electr. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK
Abstract :
A bipolar fully-differential current cell which employs a novel common mode feedback technique to achieve DC stability and a good rejection of common mode signals is described. These properties make the cell extremely suitable for use as the differential input stage to a current mode operational amplifier, as well as finding application in numerous other current mode circuits and systems.
Keywords :
bipolar integrated circuits; differential amplifiers; feedback; operational amplifiers; DC stability; bipolar fully-differential current cell; common mode feedback; common mode signals; current mode operational amplifier; differential input stage;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19901097
