公开(公告)号：EP4329194A1

公开(公告)日：2024-02-28

申请号：EP23190335.2

申请日：2023-08-08

申请人： Harman International Industries, Incorporated

发明人： DANYUK, Dimitri ,  SHIMIAEI, Danial

IPC分类号： H03F3/45

摘要： A fully differential amplifier (500) is provided. A first amplifying circuit (502) receives a first input voltage signal and provides a first output voltage signal. A second amplifying circuit (504) to receive a second voltage signal and to provide a second output voltage signal. A summing circuit (509) to provide a common mode component of the first input voltage signal and the second input voltage signal. A compensation circuit (540) to amplify the common mode component of the first input voltage signal and the second input voltage signal and output an injection signal. A common gain setting network (505) including a plurality of resistors to receive the injection signal and to interface with the first amplifying circuit (502), the second amplifying circuit (504), and the compensation circuit (540) to prevent the common mode component from being present in the first output voltage signal and the second output voltage signal.

公开(公告)号：EP3979494A1

公开(公告)日：2022-04-06

申请号：EP21200446.9

申请日：2021-10-01

申请人： Harman International Industries, Incorporated

发明人： DANYUK, Dimitri ,  EICHENBAUM, Todd A.

IPC分类号： H03F3/183 ,  H03F3/45

摘要： In at least one embodiment, a differential amplifier including first and second current transfer systems, a current difference producing system, and a feedback network circuit is provided. The first current transfer system generates a first differential current signal. The second current transfer system generates a second differential current signal. The current difference producing system receives the first differential current signal and the second differential current signal and generates a voltage difference signal that is indicative of a difference between a first current signal and a second current signal. The feedback network circuit converts the voltage difference signal into at least two converted current signals and provides the at least two converted current signals to one of the first and second current transfer systems or the current difference producing system to minimize the difference between the first current signal and the second current signal.