The Philips Semiconductors TDA8551 is a small audio amplifier with an integrated volume control. When operated from +5 V, it delivers a nominal output power of more than one watt into 8 ohms. It can ...

Although the ubiquitous LM386 IC was designed to be used as an audio amplifier, it has a number of undocumented characteristics that can be exploited to create simple radio receiver circuits that ...

Every smartphone has both a built-in amplifier and digital-to-analog converter (DAC). The amplifier cranks the audio signal to a level so that your headphones (or the smartphone’s speakers) can ...