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
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申请号: US11038353申请日: 2005-01-19
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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
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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