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METHOD AND APPARATUS FOR OPTIMIZING POWER DISSIPATION IN A LOW NOISE AMPLIFIER

  • US 20080211579A1
  • Filed: 01/11/2007
  • Published: 09/04/2008
  • Est. Priority Date: 01/11/2006
  • Status: Active Grant
First Claim
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1. A low noise amplifier, comprising:

  • first, second and third differential amplifiers connected in series each having a terminal for receiving a power supply current; and

    first and second switches responsive to a control signal, the first and second switches configured such that, (a) when the control signal is in a first state, the first switch and the second switch enable independent currents to flow in the terminals for receiving a power supply current; and

    (b) otherwise, the first switch and the second switch enable the terminal for receiving a power supply current of the second differential amplifier to reuse a current provided to the terminal for receiving a power supply current of the third differential amplifier.

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