What are VGAs? Variable gain amplifiers (VGAs) are signal-conditioning amplifiers with electronically settable voltage gain. There are analog VGAs and digital VGAs, or DVGAs. An analog voltage ...

Variable Gain Amplifiers (VGAs) implemented in Complementary Metal-Oxide Semiconductor (CMOS) technology have emerged as a critical component in modern analog and mixed-signal systems. These ...

The Miller effect, first reported a century ago, causes impedances connected between input and output of a voltage amplifier to be reflected in the amplifier input impedance, proportionately scaled by ...

VGAs are available with continuously variable gains or, in simpler topologies, with gain in discrete steps. Discrete steps are preferable in measurement circuits or in applications that can tolerate ...

This file type includes high-resolution graphics and schematics when applicable. Most data-acquisition systems with wide dynamic range need a method of adjusting the input-signal level to the ...