Audio amplifier circuitry
AssigneeCirrus Logic International Semiconductor Ltd.
InventorsDavid P. SINGLETON, Andrew J. HOWLETT, John B. BOWLERWELL
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Abstract
The present disclosure relates to circuitry comprising audio amplifier circuitry for receiving an audio signal to be amplified; and first and second output nodes for outputting first and second differential output signals. The circuitry further comprises common mode buffer circuitry configured to receive a common mode voltage and to selectively output the common mode voltage to the first and second output nodes.
Claims26
Circuitry comprising:
- audio amplifier circuitry for receiving an audio signal to be amplified;
- and
- first and second output nodes for outputting first and second differential output signals,
- wherein the circuitry further comprises common mode buffer circuitry configured to receive a common mode voltage and to selectively output the common mode voltage to the first and second output nodes.
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-21. (canceled)
Amplifier circuitry for receiving a signal to be amplified, the amplifier circuitry comprising:
- first and second output nodes for outputting first and second differential output signals;
- a dummy output stage;
- a dummy feedback path for selectively coupling an output of the dummy output stage to an input of the amplifier circuitry;
- a real output stage;
- and
- a real feedback path for selectively coupling an output of the real output stage to the input of the amplifier circuitry.
Circuitry comprising:
- first signal processing circuitry comprising first and second output signal paths for outputting a differential output signal;
- and
- second circuitry configured to output a common mode voltage to said first and second output signal paths.
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Dependencies are inferred from the claim text.