22-11-2017, 09:04 AM
A linear integrated circuit (linear IC) is a solid state analog device that is characterized by a theoretically infinite number of possible operating states. Operates in a continuous range of input levels. In contrast, a digital IC has a finite number of discrete input and output states.
Within a certain input range, the amplification curve of a linear IC is a straight line; the input and output voltages are directly proportional. The best-known and most common linear IC is the operational amplifier or operational amplifier, which consists of resistors, diodes and transistors in a conventional analog circuit. There are two entries, called investment and no investment. A signal applied to the inverting input results in an opposite phase signal in the output. A signal applied to the non-inverting input produces an identical phase signal at the output. A connection, through a variable resistor, between the output and the inverting input is used to control the amplification factor.
Linear ICs are used in audio amplifiers, A / D converters (analog to digital), averaged amplifiers, differentiators, DC amplifiers (DC), integrators, multivibrators, oscillators, audio filters and sweep generators. Linear ICs are available at most large electronics stores. Some devices contain several amplifiers within a single housing.