Title :
Design Considerations of Class D Amplifier Suitable Hearing Aid Devices
Author :
Ruiz, Daniel N. ; Moreno, Robson L. ; Pimenta, Tales Cleber
Author_Institution :
Univ. Fed. de Itajuba, Itajuba
Abstract :
This paper describes the design of a class D amplifier for hearing aid devices using PWM modulation technique. The new topology used to overcome offset problems promotes low power consumption and low harmonic distortion. The amplifier presents an efficiency of 93% with just 1.9% of THD, indicating a good compromise between efficiency and linearity.
Keywords :
amplifiers; harmonic distortion; hearing aids; network topology; pulse width modulation; PWM modulation technique; THD; class D amplifier; harmonic distortion; hearing aid devices; offset problems; Auditory system; Gain control; Low pass filters; Operational amplifiers; Power amplifiers; Power harmonic filters; Pulse width modulation; Pulse width modulation inverters; Switches; Topology;
Conference_Titel :
Electronics, Robotics and Automotive Mechanics Conference, 2007. CERMA 2007
Conference_Location :
Morelos
Print_ISBN :
978-0-7695-2974-5
DOI :
10.1109/CERMA.2007.4367764
