发明授权
- 专利标题: Temperature sensing circuit and method using DLL
- 专利标题(中): 温度感应电路及其使用方法
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申请号: US12130117申请日: 2008-05-30
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公开(公告)号: US07772915B2公开(公告)日: 2010-08-10
- 发明人: Jin-Gook Kim
- 申请人: Jin-Gook Kim
- 申请人地址: KR Suwon-si
- 专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人地址: KR Suwon-si
- 代理机构: Stanzione & Kim, LLP
- 优先权: KR10-2007-0053673 20070601
- 主分类号: H01L35/00
- IPC分类号: H01L35/00 ; G01K7/00
摘要:
A temperature sensing circuit using a delay locked loop and a temperature sensing method. The temperature sensing circuit includes a locked delay unit for receiving an external clock and generating a locked delay pulse keeping a constant delay amount regardless of temperature. A variable delay unit may have a chain structure of a plurality of delay cells depending upon temperature. The variable delay unit may receive the external clock and generate variable delay pulses having respectively different delay amounts based on temperature. A decision control unit is configured to sense a determination temperature by using a phase difference between one selected from the variable delay pulses and the locked delay pulse. Accordingly, an unnecessary time and cost causable by temperature compensation can be reduced, and an automatic temperature compensation and a precise temperature sensing operation can be obtained.
公开/授权文献
- US20080297228A1 TEMPERATURE SENSING CIRCUIT AND METHOD USING DLL 公开/授权日:2008-12-04