Resumo:
Class D amplifiers have been widely used in high performance devices, mainly
those powered by batteries. Class D amplifiers are the mostly used power amplifier in hearing
aid devices, which is the focus of this work.
Due to its popularity, the class D amplifier has been widely studied;
nevertheless, in order to take its advantages, it must be properly design.
Unlike the traditional amplifiers, the class D amplifiers makes use of modern
modulation techniques in order to obtain the desired amplifications, main in the form of
current gain.
The objectives of this work were the study of different implementation
techniques, and the proposal, design, implementation and verification of a class D amplifier
topology.
It was designed a high efficiency high fidelity integrated class D amplifier in
CMOS for the TSMC 0.35 μm process.
