Patent ID: 8861749
Filing Date: 2014-10-14
Classification: G06F,G10L,H04B,H04H

Abstract:
1. An audio output channel, comprising: an on-chip audio channel amplifier that amplifies an audio signal suitable for an audio output device; a channel output IC pin operably coupled to an output of the on-chip audio channel amplifier; a channel feedback IC pin operably coupled to an input of the on-chip audio channel amplifier to provide a feedback loop; a jack return connection coupled to the channel feedback IC pin; an inductor having a first end coupled to the jack return connection and having a second end coupled to the channel output IC pin; and wherein the inductor is operative to pass audio frequencies of the amplified audio signal at the channel output IC pin to the jack return connection while suppressing electromagnetic interference frequencies at the channel output IC pin from the jack return connection, in which the electromagnetic interference frequencies are higher than the audio frequencies.