CFB and Transimpedance circuits
Ian Hegglun send me two historical articles on the properties of so-called Current Feedback Amplifiers and Transconductance Circuits in general.
Insight into the gain-bandwidth product of amplifiers by Hayatleh, Hart and Lidgey. This is a 2005 article from Electronics World. The other document is from Erik Bruun, Feedback Analysis of Transimpedance Operational Amplifier ciruits, from a 1993 IEEE journal. Please note that these are meant for personal study and education - for professional use you should request copies from the publishers.