Take the analog high road

The characteristic features of op amps and instrumentation amps, which function as excellent subtractors, are described. Fully differential amps have differential inputs and outputs, thus they perform input subtraction, and their differential outputs bring increased voltage swing, noise immunity, and reduced even-order harmonic distortion. The output of these amps is differential and hence its wiring can be controlled between the fully differential amp and the next stage to enable noise rejection at the input of the next stage. Manufacturers make fully differential amps with high-speed analog-signal transmission in mind and hence they have high bandwidth.