The TDA2822M is a dual audio power amplifier IC developed by STMicroelectronics. This IC uses IC technology composed of various components like transistors, resistors, capacitors, etc. As the name suggests, this IC includes two independent amplifier channels that work as a stereo amplifier to power two separate speakers. This dual nature gives flexibility by allowing for stereo applications or a more powerful mono output within bridge mode, wherever both channels are merged to drive a single … [Read more...]

Tone control is an equalization procedure of adjusting different frequency bands' volume within audio, images, or other signals. It makes particular frequencies or pitches within an audio signal louder or softer. So, it allows a listener to regulate the sound tone generated by an audio system. It can also allow them to balance recording shortages, room acoustics, hearing impairments, and shortcomings through playback equipment. Generally, audio engineers use tone controls to regulate an audio … [Read more...]

Generally, a Class D audio amplifier is a PWM amplifier or a switching amplifier. The amplifying devices in this amplifier, like transistors and generally MOSFETs, work as electronic switches but not as linear gain devices like in other amplifiers. So the switches in this type of amplifier are either completely ON or OFF to reduce the power losses within the output devices. They work by quickly switching backward and forward in between the supply rails with a PWM technique to generate a pulse … [Read more...]

LM3875 IC is a 56-watt amplifier designed by Texas Instruments so this amplifier chip was very famous in DIY audio devices for its low parts count & its high-performance audio abilities. It was the significant chip in several gain clone amplifiers which depend on the Gaincard amplifier. The Gaincard from 47 Labs is a solid-state audio amplifier launched in 1999. Thus, has a simple design with fewer parts and capacitance than other amplifiers. This article elaborates on the LM3875 IC, pinout, … [Read more...]

An audio power amplifier is used to amplify low-power-based audio signals like a radio receiver (or) an electric guitar pickup signal to a high range sufficient to drive a loudspeaker or headphone. These are found in all types of sound systems, including musical instrument amplifiers, sound reinforcement, home audio systems, etc. The inputs of low-power audio amplifiers can be any number of audio sources such as CD players, record players, cassette players & digital audio players. There are … [Read more...]

An instrumentation amplifier or in-amp is a differential amplifier that includes a differential input & an output where these devices are used for amplifying the difference between two input voltage signals while refusing any signals that are very common to two inputs. These devices are used in test & measurement equipment of industrial, data acquisition, medical & measurement applications. There are different instrument amplifier ICs are there like INA33, AD623, INA128, LT1167, … [Read more...]