公开(公告)号：US08923492B2

公开(公告)日：2014-12-30

申请号：US13850355

申请日：2013-03-26

Applicant: Broadcom Corporation

Inventor： Hui Zheng ,  Sasi Kumar Arunachalam ,  Alex Jianzhong Chen ,  Aravind Kumar Padyana ,  I-Ning Ku ,  Jungwoo Song ,  Xicheng Jiang

IPC: H04M11/00

CPC classification number: H04M11/00 ,  H04M11/062

Abstract: A multi-mode line driver circuit designed to be fabricated in a CMOS process and capable of supporting a plurality of operating modes corresponding, for example, to different profiles of communication standards such as xDSL standards. The line driver circuit incorporates integrated mode switches with a two-stage amplifier architecture to relax amplifier requirements by distributing the signal gain into two amplifier stages. Reconfigurable feedback loops are provided to permit design optimization for particular modes of operation (e.g., ADSL and VDSL compliant modes). In one embodiment implemented as a Class-H amplifier, lift amplifier(s) are provided between a first amplifier stage and a second amplifier stage for controlling voltage supply levels of the second amplifier stage. The lift amplifiers may be enabled by voltage threshold detection circuitry that monitors either the input or the output signals of the first amplifier stage depending on the operable transmission mode.

Abstract translation: 设计为以CMOS工艺制造并能够支持多个操作模式的多模式线路驱动器电路，其例如对应于诸如xDSL标准的通信标准的不同简档。 线路驱动器电路集成了具有两级放大器架构的集成模式开关，通过将信号增益分配到两个放大器级来放大放大器要求。 提供可重构的反馈回路以允许针对特定操作模式（例如，ADSL和VDSL兼容模式）的设计优化。 在实现为H类放大器的一个实施例中，提升放大器设置在第一放大器级和第二放大级之间，用于控制第二放大级的电压电平。 升压放大器可以由电压阈值检测电路使能，电压阈值检测电路根据可操作的传输模式来监视第一放大器级的输入或输出信号。

公开(公告)号：US20140254779A1

公开(公告)日：2014-09-11

申请号：US13850355

申请日：2013-03-26

Applicant: BROADCOM CORPORATION

Inventor： Hui Zheng ,  Sasi Kumar Arunachalam ,  Alex Jianzhong Chen ,  Aravind Kumar Padyana ,  I-Ning Ku ,  Jungwoo Song ,  Xicheng Jiang

IPC: H04M11/00

CPC classification number: H04M11/00 ,  H04M11/062

Abstract: A multi-mode line driver circuit designed to be fabricated in a CMOS process and capable of supporting a plurality of operating modes corresponding, for example, to different profiles of communication standards such as xDSL standards. The line driver circuit incorporates integrated mode switches with a two-stage amplifier architecture to relax amplifier requirements by distributing the signal gain into two amplifier stages. Reconfigurable feedback loops are provided to permit design optimization for particular modes of operation (e.g., ADSL and VDSL compliant modes). In one embodiment implemented as a Class-H amplifier, lift amplifier(s) are provided between a first amplifier stage and a second amplifier stage for controlling voltage supply levels of the second amplifier stage. The lift amplifiers may be enabled by voltage threshold detection circuitry that monitors either the input or the output signals of the first amplifier stage depending on the operable transmission mode.

Abstract translation: 设计为以CMOS工艺制造并能够支持多个操作模式的多模式线路驱动器电路，其例如对应于诸如xDSL标准的通信标准的不同简档。 线路驱动器电路集成了具有两级放大器架构的集成模式开关，通过将信号增益分配到两个放大器级来放大放大器要求。 提供可重构的反馈回路以允许针对特定操作模式（例如，ADSL和VDSL兼容模式）的设计优化。 在实现为H类放大器的一个实施例中，提升放大器设置在第一放大器级和第二放大级之间，用于控制第二放大级的电压电平。 升压放大器可以由电压阈值检测电路使能，电压阈值检测电路根据可操作的传输模式来监视第一放大器级的输入或输出信号。