Abstract:
In many integrated class-D audio amplifiers large linear capacitors are used to create the triangular reference signals for generation of PWM signals. In this paper, an i...Show MoreMetadata
Abstract:
In many integrated class-D audio amplifiers large linear capacitors are used to create the triangular reference signals for generation of PWM signals. In this paper, an integrated class-D amplifier is presented that uses a control loop with area efficient nonlinear gate oxide capacitors. A model is used to show that the nonlinearity does not degrade the THD performance. A comparison with a similar control loop using linear capacitors is made. Measurements and simulations on two amplifiers with linear and nonlinear capacitors confirm that nonlinear capacitors do not introduce additional distortion.
Published in: 2009 Proceedings of ESSCIRC
Date of Conference: 14-18 September 2009
Date Added to IEEE Xplore: 10 November 2009
ISBN Information:
Print ISSN: 1930-8833