发明授权
- 专利标题: Digital charge pump PLL architecture
- 专利标题(中): 数字电荷泵PLL架构
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申请号: US12515562申请日: 2007-12-13
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公开(公告)号: US08004326B2公开(公告)日: 2011-08-23
- 发明人: Tajinder Manku , Christopher Snyder
- 申请人: Tajinder Manku , Christopher Snyder
- 申请人地址: CA Calgary
- 专利权人: Icera Canada ULC
- 当前专利权人: Icera Canada ULC
- 当前专利权人地址: CA Calgary
- 代理机构: Borden Ladner Gervais LLP
- 代理商 Shin Hung
- 国际申请: PCT/CA2007/002247 WO 20071213
- 国际公布: WO2008/074129 WO 20080626
- 主分类号: H03L7/06
- IPC分类号: H03L7/06
摘要:
A digital phase lock loop (PLL) circuit having a digital charge pump circuit for providing digital signals corresponding to a difference in phase between an internal clock corresponding to a voltage controlled oscillator, and a reference clock. These digital signals are processed by a digital processing circuit for providing digital control signals. Some of the digital control signals are converted into an analog control signal to provide fine control of the voltage controlled oscillator, while the remaining digital control signals provide coarse control of the voltage controlled oscillator.
公开/授权文献
- US20100060333A1 DIGITAL CHARGE PUMP PLL ARCHITECTURE 公开/授权日:2010-03-11
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