公开(公告)号：US20030137351A1

公开(公告)日：2003-07-24

申请号：US10319425

申请日：2002-12-12

Applicant: STMicroelectronics S.A.

Inventor： Claude Renous ,  Kuno Lenz

IPC: H03F003/45

CPC classification number: H03F3/45475 ,  H03F1/086 ,  H03F2200/372 ,  H03F2203/45008 ,  H03F2203/45082

Abstract: A low noise differential amplifier structure comprising a first amplifier provided with an output stage with a Miller capacitor having a first electrode and a second electrode connected to the input and the output of the output stage, respectively. A second amplifier is provided with an output stage with a Miller capacitor having a first electrode and a second electrode connected to the input and the output of the output stage, respectively. The structure is characterized in that it comprises: at least a first trimming capacitor having a first electrode connected to the first electrode of the first Miller capacitor; at least a second trimming capacitor having a first electrode connected to the first electrode of the second Miller capacitor; and a cascode stage having an input receiving the output common mode voltage and an output connected to the second electrode of the first and second trimming capacitors.

Abstract translation: 一种低噪声差分放大器结构，包括具有输出级的第一放大器，分别具有与输出级的输入端和输出端连接的第一电极和第二电极的米勒电容器。 第二放大器设置有输出级，其具有分别连接到输出级的输入端和输出端的第一电极和第二电极的米勒电容器。 该结构的特征在于它包括：至少第一微调电容器，其具有连接到第一米勒电容器的第一电极的第一电极; 至少第二微调电容器，其具有连接到第二米勒电容器的第一电极的第一电极; 以及级联级，其具有接收输出共模电压的输入端和连接到第一和第二微调电容器的第二电极的输出端。