公开(公告)号：US20150311913A1

公开(公告)日：2015-10-29

申请号：US14266465

申请日：2014-04-30

Applicant: Broadcom Corporation

Inventor： Hui Pan ,  Karim Abdelhalim

IPC: H03M1/44 ,  H03K17/08

CPC classification number: H03K17/08 ,  H03M1/1245 ,  H03M1/168 ,  H03M1/38 ,  H03M1/468

Abstract: Systems, apparatuses, and methods are provided for analog-to-digital converters (ADCs), such as successive-approximation-register (SAR) ADCs and pipelined ADCs that utilize distributed virtual-ground switching (DVS). DVS circuits and systems receive reference signal inputs that are provided to input signal buffers at the input side of the buffers via reference switches. The input signal buffers and corresponding switches are distributed into scaled replicas that each receive an analog input signal via input signal switches during a first operational phase and are connected to top plates of corresponding distributed capacitors. The bottom plates of the capacitors are sampled to provide analog input signal representations. Based on the value of the signal representations, a state machine controls each of the switches to apply reference signals to the input buffers, during a second operation phase, and to iteratively generate additional signal representations and provide a digital signal that corresponds to the analog input signal.

Abstract translation: 为模数转换器（ADC）提供系统，装置和方法，例如逐次逼近寄存器（SAR）ADC和利用分布式虚拟地交换（DVS）的流水线ADC。 DVS电路和系统接收通过参考开关提供给缓冲器输入端的输入信号缓冲器的参考信号输入。 输入信号缓冲器和相应的开关分配到缩放副本中，每个复本在第一操作阶段通过输入信号开关接收模拟输入信号，并连接到相应的分布式电容器的顶板。 电容器的底板被采样以提供模拟输入信号表示。 基于信号表示的值，状态机控制每个开关以在第二操作阶段期间将参考信号施加到输入缓冲器，并且迭代地产生附加的信号表示并提供对应于模拟输入的数字信号 信号。

公开(公告)号：US20140333380A1

公开(公告)日：2014-11-13

申请号：US13909387

申请日：2013-06-04

Applicant: Broadcom Corporation

Inventor： Junhua Tan ,  Hui Pan ,  Karim Vincent Abdelhalim ,  Mostafa Mohammad Hany Ali Hammad ,  Yuan Yao

IPC: H03F3/45

CPC classification number: H03F3/45183 ,  H03F3/45941 ,  H03F3/45959 ,  H03F2203/45466 ,  H03F2203/45641 ,  H03F2203/45642

Abstract: An output stage of a differential line driver generates a differential output signal. A common-mode component of the differential output signal is decoupled from the differential output signal using a common-mode voltage sense. The common-mode component of the differential output signal is provided to a capacitor that is coupled between the output stage and the common-mode voltage sense.

Abstract translation: 差分线路驱动器的输出级产生差分输出信号。 使用共模电压感测，差分输出信号的共模分量与差分输出信号去耦。 差分输出信号的共模分量被提供给耦合在输出级和共模电压检测之间的电容器。

公开(公告)号：US20140167851A1

公开(公告)日：2014-06-19

申请号：US13721786

申请日：2012-12-20

Applicant: BROADCOM CORPORATION

Inventor： Hui Pan ,  Yuan Yao ,  Mostafa Hammad ,  Karim Vincent Abdelhalim ,  Junhua Tan ,  Ichiro Fujimori

IPC: H03F3/45 ,  H03F3/68

CPC classification number: H03F3/45179 ,  H03F3/45183 ,  H03F3/45632 ,  H03F3/68 ,  H03F2203/45418 ,  H03F2203/45424 ,  H03F2203/45648

Abstract: Disclosed are various embodiments of a current-mode line driver that may facilitate transmitting signals to a load. The current-mode line driver may comprise a common-mode current sense element that provides a signal corresponding to the common-mode output current of the line driver. A transconductance element receives the signal from the common-mode current sense element and provides a compensating current that is based at least in part on the signal. The compensating current may reduce the common-mode output current of the line driver.

Abstract translation: 公开了可以有助于将信号发送到负载的电流模式线路驱动器的各种实施例。 电流模式线路驱动器可以包括提供对应于线路驱动器的共模输出电流的信号的共模电流检测元件。 跨导元件从共模电流检测元件接收信号，并提供至少部分地基于该信号的补偿电流。 补偿电流可能会降低线路驱动器的共模输出电流。