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Amplifier circuit with amplitude and phase correction and method of operation

  • US 6,150,881 A
  • Filed: 05/25/1999
  • Issued: 11/21/2000
  • Est. Priority Date: 05/25/1999
  • Status: Expired due to Term
First Claim
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1. An amplifier circuit, comprising:

  • a differential transistor pair that provides first and second output signals;

    a first load having a first terminal coupled for receiving the first output signal;

    a second load having a first terminal coupled for receiving the second output signal;

    a feedback transistor having a control terminal coupled to second terminals of the first and second loads and a first conduction terminal coupled to a first power conductor;

    a signal-inverting transistor having a control terminal coupled to a second conduction terminal of the feedback transistor, a first conduction terminal coupled to a second power conductor, and a second conduction terminal coupled to commonly coupled terminals of the differential transistor pair;

    a first current source having a first terminal coupled to the second conduction terminal of the feedback transistor and a second terminal coupled to the second power conductor; and

    a second current source having a first terminal coupled to the first conduction terminal of the signal-inverting transistor and a second terminal coupled to the second power conductor.

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