Title :
1 V CMOS output stage with excellent linearity
Author :
Aloisi, W. ; Giustolisi, G. ; Palumbo, G.
Author_Institution :
Dipt. Elettrico, Elettronico e Sistemistico, Catania Univ., Italy
fDate :
10/24/2002 12:00:00 AM
Abstract :
A CMOS low-voltage output stage based on a push-pull topology is proposed. It is driven by a differential signal and its symmetric topology provides excellent intrinsic linearity. It can work with a power supply as low as 1 V and when loaded with a 500 Ω resistor it exhibits negligible even harmonic components whilst odd components are maintained well below -20 dB up to 900 mVpp of the output signal. Moreover, the output stage includes a simple current control which accurately sets the bias condition.
Keywords :
CMOS analogue integrated circuits; feedback amplifiers; low-power electronics; operational amplifiers; power amplifiers; 1 V; CMOS output stage; SPECTRE; bias current control; circuit simulations; common-mode feedback circuit; differential signal; driver circuit; harmonic components; high-drive capability; high-swing capability; low power supply; low-voltage output stage; power operational amplifier; push-pull topology; symmetric topology;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020927
