发明授权
US07215199B2 Method and system for simplifying common mode feedback circuitry in multi-stage operational amplifiers 有权
用于简化多级运算放大器中的共模反馈电路的方法和系统

  • 专利标题: Method and system for simplifying common mode feedback circuitry in multi-stage operational amplifiers
  • 专利标题(中): 用于简化多级运算放大器中的共模反馈电路的方法和系统
  • 申请号: US11155157
    申请日: 2005-06-17
  • 公开(公告)号: US07215199B2
    公开(公告)日: 2007-05-08
  • 发明人: Bojko Marholev
  • 申请人: Bojko Marholev
  • 申请人地址: US CA Irvine
  • 专利权人: Broadcom Corporation
  • 当前专利权人: Broadcom Corporation
  • 当前专利权人地址: US CA Irvine
  • 代理机构: McAndrews, Held & Malloy, Ltd
  • 主分类号: H03F3/45
  • IPC分类号: H03F3/45
Method and system for simplifying common mode feedback circuitry in multi-stage operational amplifiers
摘要:
A method for simplifying common mode feedback circuitry utilized in multi-stage operational amplifiers may comprise generating a first differential output signal by a first amplifying circuit in an amplifying stage and communicating the first differential output signal to a first output of the amplifying stage. A second amplifying circuit in the amplifying stage may generate a second differential output signal that may be communicated to a second output of the amplifying stage. The second differential output signal may be fed back to a first feedback circuit in the amplifying stage, and the first differential output signal may be fed back to a second feedback circuit in the amplifying stage. Additionally, the first and the second differential output signals may be fed back to the second feedback circuit and the first feedback circuit, respectively, in a first amplifying stage and/or any one or more of succeeding amplifying stages.
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