Passive equalizer capable of use in high-speed data communication
AssigneeFreescale Semiconductor, Inc.
InventorKEVIN YI CHENG CHANG
Life of this patent
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Abstract
A passive equalizer is provided. The passive equalizer includes a first resistive element, a first inductive element, a second resistive element, and a first variable capacitor. The first resistive element is coupled between an input node and an output node. The first inductive element and the second resistive element are coupled in series between the output node and a first voltage supply node. The first variable capacitor is coupled between the input node and a first node located between the first inductive element and the second resistive element.
Claims20
A passive equalizer comprising:
- a first resistive element coupled between an input node and an output node;
- a first inductive element and a second resistive element coupled in series between the output node and a first voltage supply node;
- and
- a first variable capacitor coupled between the input node and a first node located between the first inductive element and the second resistive element.
A passive equalizer comprising:
- a first input node;
- a first output node;
- a first resistive element coupled between the first input node and the first output node;
- a first inductive element having a first terminal coupled to the first output node;
- a first variable capacitor having a first terminal coupled to the first input node and a second terminal coupled to a second terminal of the first inductive element;
- and
- a first variable resistor having a first terminal coupled to a second terminal of the first inductive element and to the second terminal of the first variable capacitor, and a second terminal coupled to a first voltage supply node.
A receiver, comprising:
- an active equalizer;
- and
- a passive equalizer coupled to the active equalizer, the passive equalizer including:
- a first resistive element coupled between an input node and an output node;
- a first inductive element having a first terminal coupled to the output node;
- a first variable capacitor having a first terminal coupled to the input node and a second terminal coupled to a second terminal of the first inductive element;
- and
- a second resistive element having a first terminal coupled to a second terminal of the first inductive element and to the second terminal of the first variable capacitor, and a second terminal coupled to a first voltage supply node.
Dependencies are inferred from the claim text.