公开(公告)号：US20250007516A1

公开(公告)日：2025-01-02

申请号：US18763572

申请日：2024-07-03

Applicant: Advanced Micro Devices, Inc.

Inventor： Rajesh Kumar ,  Edoardo Prete ,  Gerald R. Talbot ,  Ethan Crain ,  Tracy J. Feist ,  Jeffrey Cooper

IPC: H03K19/0175 ,  H03F3/45

Abstract: Systems, apparatuses, and methods for implementing a combo scheme for direct current (DC) level shifting of signals are disclosed. A receiver circuit receives an input signal on a first interface. The first interface is coupled to a resistor in parallel with a capacitor which passes the input signal to a second interface. Also, the first interface is coupled to a first pair of current sources between ground and a voltage source, and the second interface is coupled to a second pair of current sources between ground and the voltage source. An op-amp drives the current sources based on a difference between a sensed common mode voltage and a reference voltage. Based on this circuit configuration, the receiver circuit is able to prevent baseline wander, perform a DC level shift of the input signal, and achieve linear equalization of the input signal.

公开(公告)号：US20230134926A1

公开(公告)日：2023-05-04

申请号：US17566199

申请日：2021-12-30

Applicant: Advanced Micro Devices, Inc.

Inventor： Rajesh Kumar ,  Edoardo Prete ,  Gerald R. Talbot ,  Ethan Crain ,  Tracy J. Feist ,  Jeffrey Cooper

IPC: H03K19/0175 ,  H03F3/45

Abstract: Systems, apparatuses, and methods for implementing a combo scheme for direct current (DC) level shifting of signals are disclosed. A receiver circuit receives an input signal on a first interface. The first interface is coupled to a resistor in parallel with a capacitor which passes the input signal to a second interface. Also, the first interface is coupled to a first pair of current sources between ground and a voltage source, and the second interface is coupled to a second pair of current sources between ground and the voltage source. An op-amp drives the current sources based on a difference between a sensed common mode voltage and a reference voltage. Based on this circuit configuration, the receiver circuit is able to prevent baseline wander, perform a DC level shift of the input signal, and achieve linear equalization of the input signal.

公开(公告)号：US12034440B2

公开(公告)日：2024-07-09

申请号：US17566199

申请日：2021-12-30

Applicant: Advanced Micro Devices, Inc.

Inventor： Rajesh Kumar ,  Edoardo Prete ,  Gerald R. Talbot ,  Ethan Crain ,  Tracy J. Feist ,  Jeffrey Cooper

IPC: H03K19/01 ,  H03K19/0175 ,  H03F3/45

CPC classification number: H03K19/017509 ,  H03F3/45475

Abstract: Systems, apparatuses, and methods for implementing a combo scheme for direct current (DC) level shifting of signals are disclosed. A receiver circuit receives an input signal on a first interface. The first interface is coupled to a resistor in parallel with a capacitor which passes the input signal to a second interface. Also, the first interface is coupled to a first pair of current sources between ground and a voltage source, and the second interface is coupled to a second pair of current sources between ground and the voltage source. An op-amp drives the current sources based on a difference between a sensed common mode voltage and a reference voltage. Based on this circuit configuration, the receiver circuit is able to prevent baseline wander, perform a DC level shift of the input signal, and achieve linear equalization of the input signal.