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High-performance and simple CMOS unity-gain amplifier

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3 Author(s)
G. Palmisano ; Dipt. Elettrico, Elettronico e Sistemistico, Catania Univ., Italy ; G. Palumbo ; S. Pennisi

A high performance CMOS unity-gain amplifier is proposed, which provides very low gain error and low output resistance. The circuit uses a simple topology which is based on a closed-loop gain stage. The gain error can be set as low as 0.2%, which is more than ten times lower than that of the traditional circuit under the same operating conditions. Experimental results of a 1.2 μm CMOS design, in very close agreement with theoretical ones, are also given

Published in:

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications  (Volume:47 ,  Issue: 3 )