Output stage layout for minimum cross coupling between channels
AssigneeTexas Instruments Incorporated
InventorClaus Neesgaard
Life of this patent
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Abstract
An audio amplifier output stage layout technique achieves minimum cross coupling between audio amplifier channels. Regarding TDAA output stages, the typical TDAA includes two demodulation inductors per audio channel. The two pair of demodulation inductors associated with the TDAA are arranged to form an X-pattern to simultaneously minimize cross coupling between audio amplifier channels and reduce PCB layout size.
Claims20
A printed circuit board (PCB) output stage comprising:
- a PCB having a first output stage and a second output stage, wherein each output stage comprises a plurality of PCB tracks, and further wherein the plurality of PCB tracks associated with the first output stage are placed at a 90° angle with respect to the plurality of PCB tracks associated with the second output stage.
A printed circuit board (PCB) output stage comprising:
- a PCB having a first audio channel and a second audio channel, wherein each audio channel comprises a plurality of PCB tracks, and further wherein the plurality of PCB tracks associated with the first audio channel are placed at a 90° angle with respect to the plurality of PCB tracks associated with the second audio channel.
A printed circuit board (PCB) output stage comprising:
- a PCB having a first output stage and a second output stage, wherein each output stage comprises an identical pair of inductors, and further wherein the inductors are placed in an ‘X’ pattern such that the pair of inductors associated with the first output stage forms one leg of the ‘X’ pattern, while the pair of inductors associated with the second output stage forms the other leg of the ‘X’ pattern.
A printed circuit board (PCB) output stage comprising:
- a PCB having a first audio channel and a second audio channel, wherein each audio channel comprises an identical pair of inductors, and further wherein the inductors are placed in an ‘X’ pattern such that the pair of inductors associated with the first audio channel forms one leg of the ‘X’ pattern, while the pair of inductors associated with the second audio channel forms the other leg of the ‘X’ pattern.
Dependencies are inferred from the claim text.