Variable-gain amplifiers (VGAs) are important components in many receiver systems. A VGA design is described intended for lightwave transmission systems operating at gigabit-per-second rates. The design is based on two cascaded monolithic amplifiers that provide 40-dB gain, 2.5-GHz bandwidth, and 34-dB dynamic range in a ceramic hybrid package. The VGA architecture is described and its performance is summarized. The topics discussed are the variable-gain stage, the variable gain control translator, noise reduction, and device stability.
|Pages (from-to)||87, 88, 90, 92, 94|
|Number of pages||5|
|Journal||Microwaves & RF|
|State||Published - 1 Feb 1992|