公开(公告)号：US20230396246A1

公开(公告)日：2023-12-07

申请号：US18299852

申请日：2023-04-13

Applicant: MEDIATEK INC.

Inventor： Yueh-Min CHEN ,  Ting-Yang WANG ,  Yu-Hsin LIN ,  Wen-Chieh WANG

IPC: H03K17/16 ,  H03K17/687 ,  H03K17/06

CPC classification number: H03K17/162 ,  H03K17/6872 ,  H03K17/063

Abstract: A fast-transient buffer is shown. The fast-transient buffer has a flipped voltage follower coupled between the input terminal and the output terminal of the fast-transient buffer, and a first MOS transistor coupled to the flipped voltage follower as well as the output terminal of the fast-transient buffer. The first MOS transistor regulates the output voltage of the output terminal of the fast-transient buffer, in the opposite direction in comparison with an output voltage regulation direction due to the flipped voltage follower.

公开(公告)号：US20150028951A1

公开(公告)日：2015-01-29

申请号：US14513387

申请日：2014-10-14

Applicant: MediaTek Inc.

Inventor： Hung-Chieh TSAI ,  Chi-Lun LO ,  Chen-Yen HO ,  Yu-Hsin LIN

IPC: H03F3/45 ,  H03F1/48

CPC classification number: H03F3/45179 ,  H03F1/14 ,  H03F1/3211 ,  H03F1/483 ,  H03F3/193 ,  H03F3/3023 ,  H03F3/45 ,  H03F3/45076 ,  H03F3/45188 ,  H03F2200/36 ,  H03F2203/45222 ,  H03F2203/45521 ,  H03F2203/45526 ,  H03F2203/45626

Abstract: An implementation of an operational amplifier circuit includes a first stage amplifier circuit, a second stage amplifier circuit and a first feedforward circuit. The first stage amplifier circuit is coupled to a first input node for receiving a first input signal and amplifying the first input signal to generate a first amplified signal. The second stage amplifier circuit is coupled to the first stage amplifier circuit for receiving the first amplified signal and amplifying the first amplified signal to generate a first output signal at a first output node. The first feedforward circuit is coupled between the first input node and the second stage amplifier circuit for feeding the first input signal forward to the second stage amplifier circuit.

Abstract translation: 运算放大器电路的实现包括第一级放大器电路，第二级放大器电路和第一前馈电路。 第一级放大器电路耦合到第一输入节点，用于接收第一输入信号并放大第一输入信号以产生第一放大信号。 第二级放大器电路耦合到第一级放大器电路，用于接收第一放大信号并放大第一放大信号以在第一输出节点产生第一输出信号。 第一前馈电路耦合在第一输入节点和第二级放大器电路之间，用于将第一输入信号向前馈送到第二级放大器电路。