Title :
Simple compensation techniques for current feedback op-amps
Author :
Celma, S. ; Pérez, F. ; Martìnez, P.A.
Author_Institution :
Grupo de Diseno Electronico, Zaragoza Univ., Spain
Abstract :
In this paper we present an analytical model and a detailed stability analysis for current feedback operational amplifiers (CFOAs). Consequently, this permits us to obtain mathematically the components of the feedback loop. Besides, this model could be considered as the kernel of a SPICE macromodel. Different high frequency compensation techniques are introduced depending on the operation conditions. Problems to high frequency CFOAs are addressed covering feedback loop and both load and input capacitances
Keywords :
HF amplifiers; SPICE; circuit stability; compensation; feedback amplifiers; operational amplifiers; SPICE macromodel; analytical model; capacitance; current feedback operational amplifier; high frequency compensation; stability analysis; Bandwidth; Circuits; Electronic mail; Feedback loop; Impedance; Operational amplifiers; Radio frequency; SPICE; Stability; 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.1998.814901
