Invention Grant
US08014533B2 Audio output driver for reducing electromagnetic interference and improving audio channel performance
有权
音频输出驱动器，用于减少电磁干扰，提高音频通道性能
- Patent Title: Audio output driver for reducing electromagnetic interference and improving audio channel performance
- Patent Title (中): 音频输出驱动器，用于减少电磁干扰，提高音频通道性能
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Application No.: US11300236Application Date: 2005-12-14
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Publication No.: US08014533B2Publication Date: 2011-09-06
- Inventor: Matthew D. Felder
- Applicant: Matthew D. Felder
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- Agent Gary R. Stanford
- Main IPC: H04R5/00
- IPC: H04R5/00
Abstract:
An audio output circuit includes an on-chip left channel amplifier module, an on-chip center channel amplifier module, and an on-chip right channel amplifier module. A left channel IC pin is operably coupled to an output of the on-chip left channel amplifier module. A right channel IC pin is operably coupled to an output of the on-chip right channel amplifier module. A center channel IC pin is operably coupled to an output of the on-chip center channel amplifier module. A center channel feedback IC pin is operably coupled to an input of the on-chip center channel amplifier module to provide a feedback loop. A left jack connection is operably coupled to the left channel IC pin. A right jack connection is operably coupled to the right channel IC pin. A jack return connection coupled to the center feedback IC pin. An inductor has a first node coupled to the jack return connection and a second node coupled to the center channel IC pin.
Public/Granted literature
- US20070133809A1 Audio output driver for reducing electromagnetic interference and improving audio channel performance Public/Granted day:2007-06-14
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