As more and more portable audio devices hit the market such as DVD
players, MP3 players and even cell phones with audio features such as
FM radio and MP3, board space is getting more and more scarce. Thus
solution size for a particular function is very important. Design
engineers are trying to find ways to optimize the amount of components
needed to complete the desired functions. Driving audio signals into
headphones has always been one area where DC-blocking capacitors have
been needed, the replacement solution has its limitation, or is simply
not practical nor wanted.
This article weighs headphone amplifier architectures, explains their
pros and cons, and introduces a novel solution that solves issues
created by some headphone amplifier architectures. Read the
full article here.
