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Signaling system with low-power automatic gain control

  • US 7,498,882 B2
  • Filed: 04/18/2006
  • Issued: 03/03/2009
  • Est. Priority Date: 04/18/2006
  • Status: Active Grant
First Claim
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1. An integrated circuit device comprising:

  • a variable-gain amplifier to generate an amplified signal having an amplitude according to a gain control value;

    a memory circuit to store the gain control value and provide the gain control value to the variable-gain amplifier during a first interval;

    an update circuit to generate an updated gain control value based on the amplified signal during the first interval, and to output the updated gain control value to the memory circuit; and

    wherein the update circuit comprises an input to receive an inhibit signal, and wherein the update circuit is enabled to generate the updated gain control value when the inhibit signal is in a first state and inhibited from generating the updated gain control value when the inhibit signal is in the second state.

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