The concept of connecting devices in a differential manner

The concept of connecting devices in a differential manner has found a lot of use in circuit configurations that have a wide range of applications. The wide variety of circuit functions is contributed by a number of factors such as the signal input, the output port location and the amplitude of the signal. Some of the examples of circuit functions that employ a differential connection of devices include amplification, multiplication, logic, frequency shifting, phase detection, signal ended conversion and comparison. One of the commonly used devices that employ the principle of differential connection is the differential amplifier. In differential amplifiers, a liner part of the transfer characteristic is used in the first stage of signal conditioning. Signal conditioning follows a signal source sensor or output as a preliminary signal conditioning circuit. An example of this special type of amplifiers is the universal operational amplifiers that are multi-stage amplifiers associated with high gain.