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Integrated switchless programmable attenuator and low noise amplifier

  • US 7,199,664 B2
  • Filed: 12/27/2004
  • Issued: 04/03/2007
  • Est. Priority Date: 11/12/1998
  • Status: Expired due to Term
First Claim
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1. A circuit comprising:

  • a) a variable potentiometer having a plurality of tap points; and

    b) a plurality of differential amplifiers;

    wherein each differential amplifier includes a pair of transistors with a first gate directly connected to ground, a second gate coupled to a tap point of said variable potentiometer and sources coupled to each other.

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  • 6 Assignments
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