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Continuous time linear equalizer with two adaptive zero frequency locations

  • US 10,075,141 B1
  • Filed: 03/08/2017
  • Issued: 09/11/2018
  • Est. Priority Date: 03/08/2017
  • Status: Active Grant
First Claim
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1. A continuous-time linear equalizer device comprising:

  • a first input terminal;

    a second input terminal;

    a first input transistor comprising a first gate terminal a first drain terminal and a first source terminal, the first gate terminal being coupled to the first input signal;

    a second input transistor comprising a second gate terminal a second drain terminal and a second source terminal, the second gate terminal being coupled to the second input signal;

    a first source resistor coupled to the first source terminal;

    a second source resistor coupled to the first source resistor and the second source terminal;

    a first terminal positioned between the first source resistor and the second source resistor;

    a first source capacitor coupled to the first source terminal;

    a second source capacitor coupled to the second source terminal;

    a second terminal positioned between the first source capacitor and the second source capacitor and coupled to the first terminal;

    a first compensation circuit coupled to the first drain terminal, the first compensation circuit comprising a first load capacitor and a first load resistor, the first load capacitor and the first load resistor being associated with a predetermined low-frequency zero; and

    a first gain tuning circuit coupled to the first compensation circuit.

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