公开(公告)号：US20250105810A1

公开(公告)日：2025-03-27

申请号：US18825204

申请日：2024-09-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kibaek Kwon ,  Byoungjoo Yoo ,  Youngho Choi

IPC: H03F3/45 ,  H03F1/02

Abstract: Provided are a differential amplifier forming a first feedback loop and a second feedback loop by including feedback loop circuits, an electronic device, and an operating method thereof. The differential amplifier configured to generate at least one pair of differential output signals by amplifying at least one pair of differential input signals and to generate an output common-mode signal based on the at least one pair of differential output signals. The main amplifier includes a first current mirror that generates first currents. A first feedback loop circuit is connected to an output node of the main amplifier which outputs the output common-mode signal, and forms a first feedback loop that feeds back the output common-mode signal. A second feedback loop circuit generates a control signal that controls the first currents based on the output common-mode signal, and forms a second feedback loop.

公开(公告)号：US12289105B2

公开(公告)日：2025-04-29

申请号：US18514975

申请日：2023-11-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngho Choi ,  Donghyuk Lim ,  Kibaek Kwon

IPC: H03K21/00 ,  H03K5/13 ,  H03K5/24 ,  H03K19/21

Abstract: An electronic device includes a first sample circuit configured to generate a first sampling signal by sampling an input signal in response to edges of a clock signal, a first comparator configured to generate a first logic decision signal by comparing a voltage level of the first sampling signal with a reference voltage level, an analog bang-bang phase detector configured to generate a first detection signal by executing an exclusive OR (XOR) operation on successive samples of the first logic decision signal, and a digitally controlled oscillator configured to vary a frequency of the clock signal according to the first detection signal.