Method and apparatus for high performance class D audio...

Details Method and apparatus for high performance class D audio... Method and apparatus for high performance class D audio...

2008-10-31

2010-11-30

Mottola, Steven J (Department: 2817)

Amplifiers

Modulator-demodulator-type amplifier

C330S251000

Reexamination Certificate

active

07843260

ABSTRACT:
The present disclosure provides a method and apparatus for high performance class D audio amplifier circuit that includes: a modulator circuit for receiving a PWM input signal and generating a control signal, a driver control circuit, a switching circuit, and a feedback circuit. The driver control circuit is adapted to generate a drive signal for the switching circuit. The driving signal provides compensation for noise and distortions in a PWM output signal at each cycle by selecting either a first pulse signal or a second pulse signal based on the information of the control signal.

REFERENCES:
patent: 7262658 (2007-08-01), Ramaswamy et al.
patent: 2006/0044057 (2006-03-01), Hezar et al.

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