公开(公告)号：US08963640B2

公开(公告)日：2015-02-24

申请号：US13754267

申请日：2013-01-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyung-Tae Kim ,  Soo-Ik Cha

IPC: H03F3/45 ,  H03F3/30

CPC classification number: H03F3/45179 ,  H03F3/3028 ,  H03F3/45219 ,  H03F2200/456 ,  H03F2203/45166

Abstract: An amplifier for an output buffer includes an operational amplifier including a first input terminal, a second input terminal, and an output terminal, the operational amplifier is configured to generate an input bias current and amplify a voltage difference between signals applied to the first input terminal and the second input terminal, and to output the amplified voltage difference; and a self-bias circuit connected to the first input terminal and the second input terminal, the self-bias circuit is configured to generate first and second current paths when the voltage difference is equal to or greater than a predetermined voltage, to generate a tail current on the first or second current path, and to add the generated tail current to the input bias current of the operational amplifier, wherein the second input terminal is connected to the output terminal.

Abstract translation: 一种用于输出缓冲器的放大器，包括：运算放大器，包括第一输入端，第二输入端和输出端，运算放大器被配置为产生输入偏置电流，并放大施加到第一输入端的信号之间的电压差 和第二输入端，并输出放大的电压差; 以及与所述第一输入端子和所述第二输入端子连接的自偏置电路，所述自偏置电路被配置为当所述电压差等于或大于预定电压时产生第一和第二电流路径，以产生尾部 电流在第一或第二电流路径上，并且将产生的尾电流加到运算放大器的输入偏置电流，其中第二输入端连接到输出端。

公开(公告)号：US20130249635A1

公开(公告)日：2013-09-26

申请号：US13754267

申请日：2013-01-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyung-Tae Kim ,  Soo-Ik Cha

IPC: H03F3/45

CPC classification number: H03F3/45179 ,  H03F3/3028 ,  H03F3/45219 ,  H03F2200/456 ,  H03F2203/45166

Abstract: An amplifier for an output buffer includes an operational amplifier including a first input terminal, a second input terminal, and an output terminal, the operational amplifier is configured to generate an input bias current and amplify a voltage difference between signals applied to the first input terminal and the second input terminal, and to output the amplified voltage difference; and a self-bias circuit connected to the first input terminal and the second input terminal, the self-bias circuit is configured to generate first and second current paths when the voltage difference is equal to or greater than a predetermined voltage, to generate a tail current on the first or second current path, and to add the generated tail current to the input bias current of the operational amplifier, wherein the second input terminal is connected to the output terminal.

Abstract translation: 一种用于输出缓冲器的放大器，包括：运算放大器，包括第一输入端，第二输入端和输出端，运算放大器被配置为产生输入偏置电流，并放大施加到第一输入端的信号之间的电压差 和第二输入端，并输出放大的电压差; 以及与所述第一输入端子和所述第二输入端子连接的自偏置电路，所述自偏置电路被配置为当所述电压差等于或大于预定电压时产生第一和第二电流路径，以产生尾部 电流在第一或第二电流路径上，并且将产生的尾电流加到运算放大器的输入偏置电流，其中第二输入端连接到输出端。