公开(公告)号：US20130033291A1

公开(公告)日：2013-02-07

申请号：US13204505

申请日：2011-08-05

Applicant: Hajime SHIBATA ,  Wenhua YANG ,  David Nelson ALLDRED

Inventor： Hajime SHIBATA ,  Wenhua YANG ,  David Nelson ALLDRED

IPC: H03K3/00 ,  H03K17/687

CPC classification number: H03K3/356104

Abstract: A switch circuit can include an impedance selection switch and a multi-output-resistance switch driver. The impedance selection switch can electrically connect an impedance to an input of an amplifier in response to a driver output signal, and include at least one transistor. The multi-output-impedance switch driver may provide the driver output signal to the switch, and have a first, relatively higher output resistance when providing a first logic state of the driver output signal to turn on the switch, and a second, relatively lower output resistance when providing a second logic state of the driver output signal to turn off the switch. The ratio of the first output resistance to the second output resistance can be greater than a selected predetermined ratio value.

Abstract translation: 开关电路可以包括阻抗选择开关和多输出电阻开关驱动器。 阻抗选择开关可以响应于驱动器输出信号将阻抗电连接到放大器的输入，并且包括至少一个晶体管。 多输出阻抗开关驱动器可以向开关提供驱动器输出信号，并且当提供驱动器输出信号的第一逻辑状态以导通开关时具有第一相对较高的输出电阻，以及第二相对较低的 当提供驱动器输出信号的第二逻辑状态以关闭开关时的输出电阻。 第一输出电阻与第二输出电阻的比可以大于所选择的预定比值。