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Data rate programming using source degenerated CTLE

  • US 9,225,560 B1
  • Filed: 04/08/2015
  • Issued: 12/29/2015
  • Est. Priority Date: 04/08/2015
  • Status: Active Grant
First Claim
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1. A continuous time linear equalizer device comprising:

  • a first input and a second input for receiving data;

    a first transistor comprising a first gate and a first output terminal and a first source terminal, the first gate being electrically coupled to the first input;

    a second transistor comprising a second gate and a second output terminal and a second source terminal, the second gate being electrically coupled to the second input;

    a first resistor module comprising a first plurality of resistors, the first resistor module being coupled to the first output terminal, the first resistor module being characterized by a first variable resistance value;

    a second resistor module comprising a second plurality of resistors, the second resistor module being coupled to the second output terminal, the second resistor module being characterized by a second variable resistance value, the second variable resistance value being substantially equal to the first variable resistance value;

    a third resistor module comprising a third plurality of resistors, the third resistor module being coupled to the first source terminal and the second source terminal, the third resistor module being characterized by a third variable resistance value;

    a third transistor module comprising a third gate and a first drain terminal, the first drain terminal being electrically coupled to the first source terminal; and

    a comparator being configured to generate a bias voltage based on at least a common output voltage and a reference voltage, the bias voltage being electrical coupled to the third gate.

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