What are integrated circuits?
An integrated circuit (IC), sometimes called a Chip, microchip or microelectronic circuit, is a semiconductor wafer on which thousands or millions of tiny resistors, capacitors, diodes and transistors are fabricated. An IC can function as an amplifier, oscillator, timer, counter, logic gate, computer memory, microcontroller or microprocessor.
An IC is the fundamental building block of all modern electronic devices. As the name suggests, it's an integrated system of multiple miniaturized and interconnected components embedded into a thin substrate of semiconductor material (usually silicon crystal).
A single IC or Single Chip could contain thousands or millions of transistors, resistors, capacitors and diodes.
Additional components may also reside on it, all interconnected through a complex web of semiconductor wafers, silicon, copper and other materials. Size-wise, each component is small, usually microscopic. The resulting circuit, a monolithic chip, is also tiny -- often just enough to occupy a few square millimeters or centimeters of space.
One common example of a modern-day IC is the computer processor, which typically contains millions or billions of transistors, capacitors, logic gates, etc., connected together to form a complex digital circuit. Although the processor is an IC, not all ICs are processors.
Except for ICs like supervisor and reset ICs, some other device like Programmable Logic Device, DC DC Power Chip, Linear and LOD Regulators, Amplifier and so on are needed for a electronics. Among all these, you may also need a great amplifier for sure.
What Is an Amplifier?
An electronic amplifier is a device that is used to increase the power, current, or voltage of a signal. Amplifiers are used in music equipment, electronic devices such as television and radio receivers, audio equipment, and computers to increase the amplitude of a signal.
How Does an Amplifier Work?
Amplifiers work by increasing a small input signal to deliver a larger output signal. Amps in audio equipment take tiny electrical signals that contain musical frequencies and amplitudes and increase their strength. When talking about power amps, this increases the power enough to drive speakers back and forth to generate air pressure variations, also called waves.
It does this by taking power from a power supply and increasing the output to match the (relatively low-power) input signal. This process invariably introduces some noise and distortion into the signal; and the process cannot be 100% efficient at increasing the gain without loss — amplifiers inherently will lose some energy in the form of heat. The ideal amplifier can be described as "a straight wire with gain," as the output would be identical to the input, just greater.
There are many types of amplifiers in the market, such as comparators amplifier, precision op amp, operational amplifiers, etc.