Invention Grant
US08482327B2 Voltage-controlled delay lines, delay-locked loop circuits including the voltage-controlled delay lines, and multi-phase clock generators using the voltage-controlled delay lines 有权
电压控制延迟线,包括电压控制延迟线的延迟锁定环路电路和使用电压控制延迟线的多相时钟发生器

  • Patent Title: Voltage-controlled delay lines, delay-locked loop circuits including the voltage-controlled delay lines, and multi-phase clock generators using the voltage-controlled delay lines
  • Patent Title (中): 电压控制延迟线,包括电压控制延迟线的延迟锁定环路电路和使用电压控制延迟线的多相时钟发生器
  • Application No.: US13155866
    Application Date: 2011-06-08
  • Publication No.: US08482327B2
    Publication Date: 2013-07-09
  • Inventor: Jung-pil LimJae-youl Lee
  • Applicant: Jung-pil LimJae-youl Lee
  • Applicant Address: KR Gyeonggi-do
  • Assignee: Samsung Electronics Co., Ltd.
  • Current Assignee: Samsung Electronics Co., Ltd.
  • Current Assignee Address: KR Gyeonggi-do
  • Agency: Harness, Dickey & Pierce, P.L.C.
  • Priority: KR10-2010-0054054 20100608
  • Main IPC: H03L7/06
  • IPC: H03L7/06
Voltage-controlled delay lines, delay-locked loop circuits including the voltage-controlled delay lines, and multi-phase clock generators using the voltage-controlled delay lines
Abstract:
A delay-locked loop circuit includes a voltage-controlled delay line configured to generate a plurality of delayed clock signals based on an input clock signal, a lock signal and a voltage control signal, the plurality of delayed clock signals being sequentially delayed from one another to produce an earliest delayed clock signal to a latest delayed clock signal, the voltage-controlled delay line including an anti-jitter delay circuit and a plurality of delay circuits, the anti-jitter delay circuit configured to output the earliest delayed clock signal, and the plurality of delay circuits coupled in series and configured to output a remainder of the plurality of delayed clock signals, a phase frequency detection circuit configured to generate an up signal and a down signal based on the earliest delayed clock signal and the latest delayed clock signal, a filter configured to generate the voltage control signal in response to the up signal and the down signal, and a lock detection circuit configured to generate the lock signal in response to the up signal and the down signal.
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