发明授权
US08044724B2 Low jitter large frequency tuning LC PLL for multi-speed clocking applications
有权
低抖动大频率调谐LC PLL,用于多速时钟应用
- 专利标题: Low jitter large frequency tuning LC PLL for multi-speed clocking applications
- 专利标题(中): 低抖动大频率调谐LC PLL,用于多速时钟应用
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申请号: US12430430申请日: 2009-04-27
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公开(公告)号: US08044724B2公开(公告)日: 2011-10-25
- 发明人: Chethan Rao , Alvin Wang , Shaishav Desai
- 申请人: Chethan Rao , Alvin Wang , Shaishav Desai
- 申请人地址: US CA Santa Clara
- 专利权人: MoSys, Inc.
- 当前专利权人: MoSys, Inc.
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Bever, Hoffman & Harms, LLP
- 代理商 E. Eric Hoffman
- 主分类号: H03L7/00
- IPC分类号: H03L7/00
摘要:
The subject innovation relates to systems and/or methodologies for generating a low jitter large frequency tuning LC-based phase-locked loop circuit for multi-speed clocking applications. In addition to a plurality of noise reduction features, the phase-locked loop includes programmable charge pump and loop filter that enable a wide loop bandwidth, a programmable VCO that enables a wide VCO frequency range and a per lane clock divider that further enables a wide PLL frequency range. Furthermore, an auto-calibration circuit ensures that the VCO included in the PLL receives the optimum current for noise reduction across the VCO frequency range.
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