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US 2026/0189187 A1Published application
Dc coupled amplifier and equalizer circuit
AssigneeMACOM Technology Solutions Holdings, Inc.
InventorsWayne Kennan, Stefano D'Agostino, Trong Phan
Life of this patent
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Abstract
Systems, circuits, and methods for amplifying signals are provided. An illustrative circuit may include a pre-driver stage having a first current mirror that sets a fixed Direct Current (DC) current within the pre-driver stage and an output stage coupled with the pre-driver stage. The output stage may receive a bias voltage from the pre-driver stage to set an input gate voltage of the output stage, where the output stage further includes a second current mirror to set a bias current of the output stage.
Claims20
A circuit, comprising:
- a pre-driver stage comprising a first current mirror that sets a fixed Direct Current (DC) current within the pre-driver stage;
- and
- an output stage coupled with the pre-driver stage and receiving a bias voltage from the pre-driver stage to set an input gate voltage of the output stage, wherein the output stage further comprises a second current mirror to set a bias current of the output stage.
A system, comprising:
- a receiver circuit connected between a communication channel and a deserializer, wherein the receiver circuit comprises:
- an amplifier having a pre-driver stage and an output stage, wherein the pre-driver stage comprises a first current mirror that sets a fixed Direct Current (DC) current within the pre-driver stage, wherein the output stage is coupled with the pre-driver stage, wherein the output stage receives a bias voltage from the pre-driver stage to set an input gate voltage of the output stage, and wherein the output stage further comprises a second current mirror to set a bias current of the output stage.
A method, comprising:
- providing a Direct Current (DC)-coupled amplifier with an output stage;
- injecting bias for the output stage of the DC-coupled amplifier through a termination resistor;
- utilizing a pre-driver stage to set an input gate voltage of the output stage;
- and
- providing a current mirror in the output stage to set a bias current of the output stage.
2 more elements
Dependencies are inferred from the claim text.