LINEAR WIDE-RANGE VARIABLE GAIN AMPLIFIER FOR BROADBAND APPLICATIONS

摘要

A variable gain amplifier (1) serves the purpose of amplifying an input signal (13) with a variable gain. The variable gain amplifier (1) comprises a first variable gain amplification stage (11) and a second variable gain amplification state (10). The first variable gain amplification stage (11) is adapted to amplify the input signal (13) within a first gain range of the variable gain. The second variable gain amplification stage (10) is adapted to amplify the input signal (13) within a second gain range of the variable gain. The first gain range extends from a minimum gain of the variable gain amplifier (1) to a boundary gain. The second gain range extends from the boundary gain to a maximum gain of the variable gain amplifier (1).