Title :
Design of a high-gain, single-stage operational amplifier for GaAs switched-capacitor filters
Author :
Toumazou, Christofer ; Haigh, D.G.
Author_Institution :
Imperial College, Department of Electrical Engineering, London, UK
Abstract :
The letter describes the design of a single-stage, double cascode amplifier for GaAs switch-capacitor filters. The amplifier achieves a voltage gain of 60 dB assuming a realistic low-gain model for the N-channel GaAs DFETs employed. The need for compensation is avoided using a single-stage architecture, and a push-pull output stage minimises power consumption and chip area.
Keywords :
III-V semiconductors; field effect integrated circuits; gallium arsenide; linear integrated circuits; operational amplifiers; switched capacitor filters; 60 dB; DFETs; GaAs switched capacitor filters; double cascode amplifier; power consumption; push-pull output stage; single-stage operational amplifier; voltage gain;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870533
