公开(公告)号：US20220158637A1

公开(公告)日：2022-05-19

申请号：US17526830

申请日：2021-11-15

Applicant: Rambus Inc.

Inventor： Alain Rousson ,  Hui Song ,  Ravi Shivnaraine ,  Christopher Holdenried ,  Hector Villacorta

IPC: H03K19/00 ,  H03K19/0185

Abstract: The embodiments herein describe technologies for back-gate biasing of clock trees using a reference generator. A circuit includes a set of clock buffers and a programmable voltage reference generator to apply a voltage to a back gate of a transistor of the set of clock buffers.

公开(公告)号：US11742874B2

公开(公告)日：2023-08-29

申请号：US18070694

申请日：2022-11-29

Applicant: Rambus Inc.

Inventor： Ravi Shivnaraine ,  Marcus Van Ierssel

IPC: H03M1/66 ,  H03M1/68

CPC classification number: H03M1/68

Abstract: A voltage ladder is used to generate reference voltages. The voltage ladder is used by multiple digital-to-analog converters (DACs). In particular, the voltage ladder is used by multiple pulse-width modulation (PWM) DACs. Having multiple DACs utilize a common voltage ladder for their reference voltages reduces mismatched output voltages between DACs. Having multiple DACs utilize the common voltage ladder helps ensure that the reference voltages used by different DACs are not affected by process, voltage, and/or temperature variations in the reference voltages that would occur when using different voltage ladders for each DAC.

公开(公告)号：US11705903B2

公开(公告)日：2023-07-18

申请号：US17526830

申请日：2021-11-15

Applicant: Rambus Inc.

Inventor： Alain Rousson ,  Hui Song ,  Ravi Shivnaraine ,  Christopher Holdenried ,  Hector Villacorta

IPC: H03K19/003 ,  H03K19/00 ,  H03K19/0185

CPC classification number: H03K19/0027 ,  H03K19/01855 ,  H03K19/018521

Abstract: The embodiments herein describe technologies for back-gate biasing of clock trees using a reference generator. A circuit includes a set of clock buffers and a programmable voltage reference generator to apply a voltage to a back gate of a transistor of the set of clock buffers.

公开(公告)号：US11539374B2

公开(公告)日：2022-12-27

申请号：US17461008

申请日：2021-08-30

Applicant: Rambus Inc.

Inventor： Ravi Shivnaraine ,  Marcus Van Ierssel

IPC: H03M1/66 ,  H03M1/68

Abstract: A voltage ladder is used to generate reference voltages. The voltage ladder is used by multiple digital-to-analog converters (DACs). In particular, the voltage ladder is used by multiple pulse-width modulation (PWM) DACs. Having multiple DACs utilize a common voltage ladder for their reference voltages reduces mismatched output voltages between DACs. Having multiple DACs utilize the common voltage ladder helps ensure that the reference voltages used by different DACs are not affected by process, voltage, and/or temperature variations in the reference voltages that would occur when using different voltage ladders for each DAC.