Bipolar current feedback amplifier: Compensation guidelines

The aim of the paper is to discuss in detail the compensation of the curren t feedback amplifier (CFOA). The approach is suitable for a pencil-and-pape r compensation and takes into account both resistive and capacitive feedbac k. The frequency limitation inside the CFOA and due to a load capacitor are also considered. The feature of the CFOA which can be simply compensated f or when it is configured as a differentiator is also exploited. To validate the proposed strategies, Spice simulations were performed on th e fundamental CFOA topologies, and some of them are included and discussed in the paper.