STRUCTURAL METHODS FOR INCREASING THE SPEED OF OPERATIONAL AMPLIFIERS
Andrey A. Danilov, Dmitry E. Polonnikov
Structural methods for improving the speed-of-response of operation
amplifiers (OA) are discussed along with ways to reduce the settling
time of an OA with a parallel negative feedback loop. Promising block
diagrams for high-speed OA's are analyzed, specifically for OA
current-to-voltage converters, and their maximal potentialities are
estimated with regard to increasing the cutoff frequency and reducing
the settling time of their output voltage.
A. Danilov's commentary, 2013
article first introduced the Dynamic Linearity Criteria of the
operational amplifier (OA) with a total negative feedback (NFB). This Criteria
is especially important for precision audio amplifiers, because it
guarantees the preservation of linearity for any pulsed signals (read more).
the article mentions the work of russian inventor Igor G. Ptahovskii
(1975), which describes a current feedback amplifier (CFA), long before
US patent, issued to Nelson and Saller in 1983.