Here’s class D audio amplifier pumping remedy from MAXIM Integrated, power-supply pumping is a problem that occurs when playing low-frequency audio signals through a single-ended output. Link here (PDF) This application note explains what power-supply pumping is and how it occurs in designs that employ a Class D audio amplifier with single-ended output loads. The […]
Technical note from STMicroelectronics about popping noise usually heard on audio amplifiers and how to minimize it. Link here (PDF) Pop and click, or rather, the absence of it, is a characteristic that makes a lot of impact in the world of audio amplifiers. This is especially true for those destined for headphone-equipped applications (such […]
A teardown of a TDA7375 audio amplifier IC from Electronupdate: The TDA7375 audio power amplifier. Another example of a long-lived integrated circuit. 1st introduced in 1998… looks like it’s still being made. Check out the video after the break.
rsdio writes: This is a strange one. It claims to prevent clipping, but still appears to introduce distortion. Perhaps the idea is that soft clipping is preferred to hard clipping? If there were a voltage-controlled gain input, then true peak limiting would be possible, but this seems to trade one form of distortion for another. […]