Performance of off-chip connection for power amplifier
First Claim
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1. An amplifier arrangement provided on an integrated circuit comprising:
- a main push-pull amplifier connected to receive an input signal and generate an amplified version of the input signal; and
an additional amplifier connected to receive the input signal and generate an amplified version thereof; and
wherein the outputs of the main amplifier and the additional amplifier are combined to provide an amplified output; and
wherein during operation when the bandwidth of the main amplifier is reduced, the bandwidth of the additional amplifier is maintained at a level corresponding to the bandwidth of the main amplifier before the bandwidth of the main amplifier was reduced.
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Abstract
There is provided an integrated circuit comprising a main push-pull amplifier (108, 110) with balanced outputs and an additional push-pull amplifier (862, 863) with balanced outputs. Each of these balanced outputs is connected to an off-chip load (822) via respective bonding wires (818, 828, 830, 880) to provide a combined amplified signal to the load. The additional amplifier serves to compensate for crossover distortions generated by the main amplifier.
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Citations
20 Claims
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1. An amplifier arrangement provided on an integrated circuit comprising:
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a main push-pull amplifier connected to receive an input signal and generate an amplified version of the input signal; and an additional amplifier connected to receive the input signal and generate an amplified version thereof; and wherein the outputs of the main amplifier and the additional amplifier are combined to provide an amplified output; and wherein during operation when the bandwidth of the main amplifier is reduced, the bandwidth of the additional amplifier is maintained at a level corresponding to the bandwidth of the main amplifier before the bandwidth of the main amplifier was reduced. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 20)
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13. A method of amplifying an input signal comprising:
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amplifying, on an integrated circuit, the input signal in a main amplifier to generate an amplified version of the input signal; amplifying, on the integrated circuit, the input signal in an additional amplifier to generate an amplified version thereof, wherein during operation when the bandwidth of the main amplifier is reduced, the bandwidth of the additional amplifier is maintained at a level corresponding to the bandwidth of the main amplifier before the bandwidth of the main amplifier was reduced; and combining the amplified versions of the input signal off-chip to provide an amplified output. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification