Several trends shape today’s audio reproduction needs—more channels per unit, more integrated sound processing features, and the continual drive towards increased efficiency. These trends affect the choice of amplifier and how the circuit is designed.
In response, our portfolio of audio amplification technologies enables the latest portable equipment and audio component designs. This includes miniaturized devices that maximize the effect of small form factor speakers to generate a big, high-quality sound. Our audio amplifier solutions provide excellent EMC performance (especially in noisy environments) to ensure distortion-free listening.
|Amplifier Class||Typical Efficiency||Pros||Cons|
|A||~15-35%||No possibility of crossover distortion||Inefficiency = heat
Single-ended designs prone to hum and higher levels of distortion.
|B||~70%||Relatively high-efficiency||Potential for significant amounts of crossover distortion and compromised fidelity|
|AB||~50-70%||More efficient than Class-A
|Crossover distortion can be rendered moot.
Efficiency is good, but not great.
|G & H||~50-70%||Improved efficiency over Class-AB||Costlier than Class-AB but higher power levels are achievable in a smaller form factor.|
|D||>90%||Most possible efficiency Lightweight||Pulse width modulators operating at relatively low frequencies can compromise high-frequency audio reproduction.
Some designs produce varying sound quality depending on speaker load.
Whether it’s home theater, sound bars or the entertainment system in your vehicle, audio reproduction is being influenced by several trends. More channels are used per unit, more integrated sound processing features, and there is the continual drive towards increased efficiency.
These trends affect the choice of amplifier and how the circuit is designed. Through our deep understanding, we have evolved our innovative audio amplification technologies so your systems can meet these increasing needs.