发明公开
EP3276828A1 PROGRAMMABLE DELAY CIRCUIT WITH INTEGER AND FRACTIONAL TIME RESOLUTION
审中-公开
具有整数和分段时间分辨率的可编程延迟电路
- 专利标题: PROGRAMMABLE DELAY CIRCUIT WITH INTEGER AND FRACTIONAL TIME RESOLUTION
- 专利标题(中): 具有整数和分段时间分辨率的可编程延迟电路
-
申请号: EP17191587.9申请日: 2008-12-18
-
公开(公告)号: EP3276828A1公开(公告)日: 2018-01-31
- 发明人: KESKIN, Mustafa , PEDRALI-NOY, Marzio
- 申请人: QUALCOMM Incorporated
- 申请人地址: 5775 Morehouse Drive San Diego, CA 92121-1714 US
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: 5775 Morehouse Drive San Diego, CA 92121-1714 US
- 代理机构: Schmidbauer, Andreas Konrad
- 优先权: US962045 20071220
- 主分类号: H03K5/131
- IPC分类号: H03K5/131
摘要:
A programmable delay circuit capable of providing a delay with integer and fractional time resolution is described. In one exemplary design, an apparatus includes first and second (500) delay circuits. The first delay circuit provides a first delay of an integer number of time units. The second delay circuit (500) couples to the first delay circuit and provides a second delay of a fraction of one time unit. The first delay circuit may include multiple unit delay cells coupled in series. Each unit delay cell may provide a delay of one time unit when enabled. The second delay circuit (500) may have first and second paths. The first path may provide a shorter delay when selected, and the second path may provide a longer delay when selected. The second path may be coupled to at least one dummy logic gate (518) that provides extra loading to obtain the longer delay for the second path.
公开/授权文献
信息查询
IPC分类: