公开(公告)号：US20140253213A1

公开(公告)日：2014-09-11

申请号：US14280807

申请日：2014-05-19

Applicant: STMicroelectronics International N.V.

Inventor： Adeel Ahmad ,  Chandrajit Debnath

IPC: H03L5/00

CPC classification number: H03L5/00 ,  H03F3/45179 ,  H03K19/018528

Abstract: An amplifier has a first pull-up path coupled between a voltage supply node and an output node, and a pull-down path coupled between the output node and a ground supply node. A second pull-up path is coupled between the voltage supply node and the output node. The second pull-up path is actuated by a feedback signal and biased by a biasing signal. An inverter circuit is operable to invert the signal at the amplifier output node to generate the feedback signal. A biasing circuit is configured to generate the biasing signal. The biasing circuit is configured to control a relative strength of the pull-down path to the second pull-up path, wherein the pull-down path is stronger than the second pull-up path in a manner that is consistently present over all PVT corners.

Abstract translation: 放大器具有耦合在电压供应节点和输出节点之间的第一上拉通路，以及耦合在输出节点和地电源节点之间的下拉通路。 第二上拉路径耦合在电压供应节点和输出节点之间。 第二上拉路径由反馈信号驱动并被偏置信号偏置。 反相器电路可操作以反转放大器输出节点处的信号以产生反馈信号。 偏置电路被配置为产生偏置信号。 偏置电路被配置为控制到第二上拉路径的下拉路径的相对强度，其中下拉路径以一致地存在于所有PVT角上的方式比第二上拉路径更强 。

公开(公告)号：US09000826B2

公开(公告)日：2015-04-07

申请号：US14280807

申请日：2014-05-19

Applicant: STMicroelectronics International N.V.

Inventor： Adeel Ahmad ,  Chandrajit Debnath

IPC: H03L5/00 ,  H03F3/45 ,  H03K19/0185

CPC classification number: H03L5/00 ,  H03F3/45179 ,  H03K19/018528

Abstract: An amplifier has a first pull-up path coupled between a voltage supply node and an output node, and a pull-down path coupled between the output node and a ground supply node. A second pull-up path is coupled between the voltage supply node and the output node. The second pull-up path is actuated by a feedback signal and biased by a biasing signal. An inverter circuit is operable to invert the signal at the amplifier output node to generate the feedback signal. A biasing circuit is configured to generate the biasing signal. The biasing circuit is configured to control a relative strength of the pull-down path to the second pull-up path, wherein the pull-down path is stronger than the second pull-up path in a manner that is consistently present over all PVT corners.

Abstract translation: 放大器具有耦合在电压供应节点和输出节点之间的第一上拉通路，以及耦合在输出节点和地电源节点之间的下拉通路。 第二上拉路径耦合在电压供应节点和输出节点之间。 第二上拉路径由反馈信号驱动并被偏置信号偏置。 反相器电路可操作以反转放大器输出节点处的信号以产生反馈信号。 偏置电路被配置为产生偏置信号。 偏置电路被配置为控制到第二上拉路径的下拉路径的相对强度，其中下拉路径以一致地存在于所有PVT角上的方式比第二上拉路径更强 。