Title :
On the new design of CMOS current feedback amplifiers
Author :
Sarkar, Ataur R. ; Maundy, Brent J. ; Gift, Stephan J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Calgary Univ., Alta.
Abstract :
A new design for low-voltage CMOS current feedback amplifiers (CFAs) is introduced. This unconventionally implemented CFA exhibits near gain independent bandwidth. An important feature of the design is that the input resistance looking into the X terminal of the current conveyor is reduced by using an extra opamp. This new architecture results in an amplifier whose bandwidth is potentially constant unlike that of conventional design. Complete analysis and simulation results confirm the design topology
Keywords :
CMOS analogue integrated circuits; current conveyors; feedback amplifiers; CMOS current feedback amplifier; constant independent bandwidth; current conveyor; input resistance; Analytical models; Bandwidth; Circuit analysis; Circuit simulation; Circuit topology; Feedback amplifiers; Negative feedback; Resistors; Signal design; Voltage; CMOS; Low-voltage; current conveyor; currentfeedback amplifier;
Conference_Titel :
Circuits and Systems, 2003 IEEE 46th Midwest Symposium on
Conference_Location :
Cairo
Print_ISBN :
0-7803-8294-3
DOI :
10.1109/MWSCAS.2003.1562215
