Invention Grant
US06741132B2 Low noise level differential amplifier 有权
低噪声电平差分放大器

  • Patent Title: Low noise level differential amplifier
  • Patent Title (中): 低噪声电平差分放大器
  • Application No.: US10319425
    Application Date: 2002-12-12
  • Publication No.: US06741132B2
    Publication Date: 2004-05-25
  • Inventor: Claude RenousKuno Lenz
  • Applicant: Claude RenousKuno Lenz
  • Priority: FR0116052 20011212
  • Main IPC: H03F345
  • IPC: H03F345
Low noise level differential amplifier
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.
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