公开(公告)号：US20210119590A1

公开(公告)日：2021-04-22

申请号：US16657863

申请日：2019-10-18

Applicant: Analog Devices, Inc.

Inventor： Xiao Hong Du

IPC: H03F3/24 ,  H04B1/04 ,  H04B1/16

Abstract: Data isolators are described. The data isolators include a differential receiver having cross-coupled single-ended amplifiers. The single-ended amplifiers may be referenced to a time-varying reference potential. The cross-coupling of the single-ended amplifiers may provide high speed, low power consumption operation of the data isolator.

公开(公告)号：US11533027B2

公开(公告)日：2022-12-20

申请号：US16657863

申请日：2019-10-18

Applicant: Analog Devices, Inc.

Inventor： Xiao Hong Du

IPC: H03F3/24 ,  H04B1/04 ,  H04B1/16

Abstract: Data isolators are described. The data isolators include a differential receiver having cross-coupled single-ended amplifiers. The single-ended amplifiers may be referenced to a time-varying reference potential. The cross-coupling of the single-ended amplifiers may provide high speed, low power consumption operation of the data isolator.

公开(公告)号：US09813035B2

公开(公告)日：2017-11-07

申请号：US14930186

申请日：2015-11-02

Applicant: Analog Devices, Inc.

Inventor： Zhichao Tan ,  Khiem Quang Nguyen ,  Xiao Hong Du

IPC: H03F1/02 ,  H03G1/00 ,  H03F3/00 ,  H03F3/45

CPC classification number: H03G1/0094 ,  H03F3/005 ,  H03F3/45475 ,  H03F3/45479 ,  H03F3/70 ,  H03F2200/153 ,  H03F2203/45156 ,  H03F2203/45512 ,  H03F2203/45551 ,  H03F2203/45634

Abstract: Systems and methods disclosed herein provide for enhancing the low frequency (DC) gain of an operational amplifier with multiple correlated level shifting capacitors. In an embodiment, the operational amplifier is level shifted with a first correlated level shifting capacitor in a first phase and, then, is level shifted again with at least a second correlated level shifting capacitor in at least a second, non-overlapping, consecutive phase. In an embodiment, the multiple correlated level capacitors are controlled by a switching circuit network.

公开(公告)号：US20170126189A1

公开(公告)日：2017-05-04

申请号：US14930186

申请日：2015-11-02

Applicant: Analog Devices, Inc.

Inventor： Zhichao Tan ,  Khiem Quang Nguyen ,  Xiao Hong Du

IPC: H03G1/00 ,  H03F3/45 ,  H03F3/00

CPC classification number: H03G1/0094 ,  H03F3/005 ,  H03F3/45475 ,  H03F3/45479 ,  H03F3/70 ,  H03F2200/153 ,  H03F2203/45156 ,  H03F2203/45512 ,  H03F2203/45551 ,  H03F2203/45634

Abstract: Systems and methods disclosed herein provide for enhancing the low frequency (DC) gain of an operational amplifier with multiple correlated level shifting capacitors. In an embodiment, the operational amplifier is level shifted with a first correlated level shifting capacitor in a first phase and, then, is level shifted again with at least a second correlated level shifting capacitor in at least a second, non-overlapping, consecutive phase. In an embodiment, the multiple correlated level capacitors are controlled by a switching circuit network.