| 摘要 |
Methods and systems for gain control and power saving in broadband feedback low-noise amplifiers are disclosed and may include selectively enabling one or more of a subset and all of plurality of gain stages in the low noise amplifier. A feedback resistance coupled across the plurality of gain stages may be adjusted. A gain of each of the plurality of gain stages may be binary weighted. One or more pairs of switching transistors may selectively enable the one or more of the plurality of gain stages. The feedback resistance may include a plurality of individually addressable resistors. The adjustment of the feedback resistance may include switching one or more of a plurality of switching transistors, where one of the plurality of transistors may be connected in parallel with each of the individually addressable resistors. The gain stages may be controlled in parallel, and/or may be digitally controlled.
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