What do video amplifiers do?

A Video Distribution Amplifier (also known as a distribution amp or VDA) takes a video signal as an input, amplifies it, and outputs the amplified video signal to two or more outputs. It is primarily used to supply a single video signal to multiple pieces of video equipment.

What is an amplifier chip?

Audio amplifier chips are used in circuits used to process audio signals.

Where is the video amplifier used?

Typical applications are in television receivers, cathode-ray-tube computer terminals, and pulse amplifiers. The function of a video amplifier is to amplify a signal containing high-frequency components without introducing distortion.

Do splitter amplifiers work?

Cable modems will generally work with a splitter or a bi-directional amplifier. Depending on the signal strength, a bi-directional amplifier may improve or degrade your cable modem performance. Cable amplifiers not only amplify the signal, but also any noise on the line, and introduce some return loss.

Why are class A amplifiers inefficient?

Class-A amplifiers are inefficient. If high output power is needed from a class-A circuit, the power supply and accompanying heat becomes significant. For every watt delivered to the load, the amplifier itself, at best, uses an extra watt.

What to look for in an amplifier chip?

Features are an important consideration when selecting audio amplifier chips. Some products have an embedded reference voltage or on-chip protection against electrostatic discharge (ESD). Others feature rail-to-rail output or rail-to-rail input. Single supply devices can operate with only one power supply.

What does TDH stand for in amplifier chips?

With audio amplifier chips, TDH is a measure of the purity of a signal. This value is defined as the ratio of the sum of the powers of harmonic components to the power of the fundamental.

When to shut down an audio amplifier chip?

Audio amplifier chips with an embedded control circuit shut down the device when the temperature exceeds a predefined limit. Audio amplifier chips with embedded current limiters are also commonly available. In Europe, ICs must meet the requirements of the Restriction of Hazardous Substances (RoHS) directive.

What are the specifications of an audio amplifier?

Audio amplifiers carry performance specifications such as operating temperature, output power, supply voltage, and supply current. Total harmonic distortion (THD) is also an important consideration. With audio amplifier chips, TDH is a measure of the purity of a signal.

What do video amplifiers do? A Video Distribution Amplifier (also known as a distribution amp or VDA) takes a video signal as an input, amplifies it, and outputs the amplified video signal to two or more outputs. It is primarily used to supply a single video signal to multiple pieces of video equipment. What is…