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US 6,714,069 B1Granted
Self-configurable amplifier circuit
AssigneeKoninklijke Philips Electronics N.V.
InventorGilles Chevallier
Life of this patent
Estimating the term…
Abstract
An amplifier circuit is disclosed which receives signals that cause the amplifier to be configured in an asymmetrical mode or symmetrical mode, so that performance may be optimized in each mode.
Claims9
An amplifier circuit comprising:
- a preamplifying stage;
- an amplifying stage, and
- identification means for identifying the configuration of the amplifying stage, which circuit is characterized in that it additionally comprises adaptation means to configure the pre-amplifying stage in such a manner that it supplies the amplifying stage with:
- either two signals which are in phase opposition if the amplifying stage is configured so as to be in the symmetrical mode,
- or two signals which are in phase if the amplifying stage is configured so as to be in the asymmetrical mode wherein said pre-amplifying stage comprises two pre-amplifiers, which are both arranged between two inputs of the amplifier circuit and two inputs of the amplify stage, the adaptation means alternately activating one of the two pre-amplifiers and deactivating the other.
2 more elements
A method of optimizing the operation of an amplifier circuit comprising
- a preamplifying stage, and
- an amplifying stage, which method comprises an identification step for identifying the amplifying stage configuration, characterized in that the method additionally includes a configuration step to configure the pre-amplifying stage in such a manner that it supplies the amplifying stage with:
- either two signals which are in phase opposition if the amplifying stage is configured so as to be in the symmetrical mode,
- or two signals which are in phase if the amplifying stage is configured so as to be in the asymmetrical mode the configuration step including alternately activating one of two pre-amplifiers and deactivating another of said two pre-amplifiers.
1 more element
Dependencies are inferred from the claim text.