Title :
An investigation of log domain current feedback amplifiers
Author :
Despotopoulos, S. ; Drakakis, E. ; Toumazou, C.
Author_Institution :
Dept. of Electron. & Electr. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK
Abstract :
In this paper the idea of using a log domain integrator within a current feedback op amp is investigated. The log domain current feedback amplifier is then studied in order to gain better understanding of the way it works focusing on stability issues. A comparison with the classical CFA is performed in terms of resistive and capacitive feedback proving that the circuit can work with capacitive feedback under certain conditions
Keywords :
circuit stability; feedback amplifiers; integrating circuits; operational amplifiers; capacitive feedback; feedback op amp; log domain current feedback amplifiers; log domain integrator; resistive feedback; stability issues; Educational institutions; Feedback amplifiers; Feedback circuits; Frequency; Impedance; Mirrors; Operational amplifiers; Output feedback; Parasitic capacitance; Voltage;
Conference_Titel :
Electronics, Circuits and Systems, 1998 IEEE International Conference on
Conference_Location :
Lisboa
Print_ISBN :
0-7803-5008-1
DOI :
10.1109/ICECS.1998.814907
