发明申请
US20050168291A1 PLL phase/frequency detector with fully differential output charge pump 有权
PLL相位/频率检测器,带全差分输出电荷泵

  • 专利标题: PLL phase/frequency detector with fully differential output charge pump
  • 专利标题(中): PLL相位/频率检测器,带全差分输出电荷泵
  • 申请号: US11038353
    申请日: 2005-01-19
  • 公开(公告)号: US20050168291A1
    公开(公告)日: 2005-08-04
  • 发明人: Magnus Karlsson
  • 申请人: Magnus Karlsson
  • 申请人地址: SE Jarfalla
  • 专利权人: Zarlink Semiconductor AB
  • 当前专利权人: Zarlink Semiconductor AB
  • 当前专利权人地址: SE Jarfalla
  • 优先权: GB0401536.8 20040123
  • 主分类号: H03L7/093
  • IPC分类号: H03L7/093 H03L7/089 H03L7/00
PLL phase/frequency detector with fully differential output charge pump
摘要:
Charge current in a charge pump of a phase locked loop is equalized by controlling one of the direct current sources with a feedback signal derived from the common mode voltage of a fully differential phase locked loop filter.
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