There are two main types of Integrated circuit are:
1.Analog IC2. Digital IC
Analog ic
An analog integrated circuit are those circuit that deals with signals which is free to vary from zero to power supply. It is known as "Analog IC"
Examples of analog integrated circuits are operational amplifiers, differential amplifiers, voltage regulators etc.
digital ic
Digital circuit is a circuit which is embedded with many other logic circuits programmed to perform some logical operations. It is known as "Digital IC"
Examples of Digital logic IC are Half adder, full adder, multiplexer, demultiplexer etc.