发明授权
- 专利标题: eFuse resistance sensing scheme with improved accuracy
- 专利标题(中): eFuse电阻传感方案具有提高的精度
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申请号: US11717836申请日: 2007-03-13
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公开(公告)号: US07501879B1公开(公告)日: 2009-03-10
- 发明人: Kwansuhk Oh , Raymond C. Pang , Hsung Jai Im , Sunhom Paak
- 申请人: Kwansuhk Oh , Raymond C. Pang , Hsung Jai Im , Sunhom Paak
- 申请人地址: US CA San Jose
- 专利权人: Xilinx, Inc.
- 当前专利权人: Xilinx, Inc.
- 当前专利权人地址: US CA San Jose
- 代理商 Thomas A. Ward; Michael R. Hardaway
- 主分类号: G11C17/18
- IPC分类号: G11C17/18 ; H01H85/00
摘要:
An eFuse sensing circuit replaces the inverters used to provide the “read” output state of a conventional eFuse circuit. The sensing circuit includes a comparator with one input coupled to the eFuse circuitry, and a second input coupled to a reference voltage generator circuit. The reference voltage generator circuit includes an internal resistor. Transistors of the sense circuit are provided to mimic the transistors of the eFuse circuit, so that variations of transistors due to process, voltage and temperature will be substantially the same. The resistor of the sense circuit is then effectively compared with the resistance of the eFuse by the comparator irrespective of temperature and process variations.
公开/授权文献
- US2096489A Rotary cutting tool 公开/授权日:1937-10-19
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