Title :
Drift cancellation in a d.c.-coupled computing amplifier
Author :
Barnes, R.N. ; Hart, B.L.
Author_Institution :
Thames Polytechnic, Department of Electrical Engineering, London, UK
Abstract :
The technique of employing one operational amplifier merely to cancel, or partially cancel, the voltage offsets and drift effects of its twin on the same semiconductor wafer makes possible, at low cost, a d.c. computing amplifier with a drift performance an order of magnitude better than that of a single amplifier used by itself.
Keywords :
coupled circuits; integrated circuits; operational amplifiers; computing amplifier; d.c. coupling; drift cancellation; integrated circuits; operational amplifier; semiconductor wafers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19710017
