Amplifier
AssigneeRealtek Semiconductor Corp.
InventorsMing-Hui Tung, Shawn Min
Life of this patent
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Abstract
An amplifier includes an amplifier circuit and a gain adjusting circuit. The amplifier circuit has a design gain and a real gain and is configured to output an output signal according to an input signal and the real gain. The gain adjusting circuit is coupled to the amplifier circuit and is configured to receive the input signal to compare a voltage of the input signal with a first reference voltage, wherein when the voltage of the input signal exceeds the first reference voltage, the gain adjusting circuit increases the real gain of the amplifier circuit, so that the real gain approach the design gain.
Claims20
An amplifier, comprising:
- an amplifier circuit having a design gain and a real gain and configured to output an output signal according to an input signal and the real gain;
- and
- a gain adjusting circuit coupled to the amplifier circuit and configured to receive the input signal to compare a voltage of the input signal with a first reference voltage;
- wherein when the voltage of the input signal exceeds the first reference voltage, the gain adjusting circuit increases the real gain of the amplifier circuit, so that the real gain approach the design gain.
Dependencies are inferred from the claim text.