Title :
Avoiding the Gain-Bandwidth Trade Off in Feedback Amplifiers
Author :
Pennisi, Salvatore ; Scotti, Giuseppe ; Trifiletti, Alessandro
Author_Institution :
DIEES (Dipt. di Ing. Elettr. Elettron. e dei Sist.), Univ. of Catania, Catania, Italy
Abstract :
The gain-bandwidth conflict is one the most important limitations of high gain feedback amplifiers. In this tutorial paper we will discuss in a unified manner the most important approaches aimed to design amplifiers with a constant closed-loop bandwidth. Advantages and drawbacks are evidenced and new potential solutions are also formulated.
Keywords :
feedback amplifiers; constant closed-loop bandwidth; gain-bandwidth trade off avoidance; high gain feedback amplifiers; Bandwidth; Capacitors; Equations; Mathematical model; Resistance; Resistors; Transfer functions; Constant bandwidth; Operational amplifiers; feedback amplifiers; gain bandwidth product;
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
DOI :
10.1109/TCSI.2011.2107211
