发明申请
US20090108898A1 METHODS AND APPARATUS FOR IMPROVED PHASE SWITCHING AND LINEARITY IN AN ANALOG PHASE INTERPOLATOR 有权
改进的相位切换和模拟相位插值器的线性度的方法和装置

  • 专利标题: METHODS AND APPARATUS FOR IMPROVED PHASE SWITCHING AND LINEARITY IN AN ANALOG PHASE INTERPOLATOR
  • 专利标题(中): 改进的相位切换和模拟相位插值器的线性度的方法和装置
  • 申请号: US12344047
    申请日: 2008-12-24
  • 公开(公告)号: US20090108898A1
    公开(公告)日: 2009-04-30
  • 发明人: Ronald L. FreymanCraig B. Ziemer
  • 申请人: Ronald L. FreymanCraig B. Ziemer
  • 申请人地址: US PA Allentown
  • 专利权人: AGERE SYSTEMS INC.
  • 当前专利权人: AGERE SYSTEMS INC.
  • 当前专利权人地址: US PA Allentown
  • 主分类号: H03H11/16
  • IPC分类号: H03H11/16
METHODS AND APPARATUS FOR IMPROVED PHASE SWITCHING AND LINEARITY IN AN ANALOG PHASE INTERPOLATOR
摘要:
Methods and apparatus are provided for improving phase switching and linearity in an analog phase interpolator. A phase interpolator in accordance with the present invention comprises (i) a plurality of tail current sources that are activated for substantially all times when the phase interpolator is operational; (ii) at least two pairs of input transistor devices, wherein one pair of the input transistor devices is associated with a minimum phase of the phase interpolator and another pair of the input transistor devices is associated with a maximum phase of the phase interpolator; and (iii) a plurality of current steering switches that provide currents generated by the plurality of tail current sources to one or more of the at least two pairs of input transistor devices, based on an applied interpolation control signal.
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