发明申请
US20080002451A1 SYSTEM AND METHOD FOR DIFFERENTIAL EFUSE SENSING WITHOUT REFERENCE FUSES
有权
没有参考熔丝的差分EFUSE感应系统和方法
- 专利标题: SYSTEM AND METHOD FOR DIFFERENTIAL EFUSE SENSING WITHOUT REFERENCE FUSES
- 专利标题(中): 没有参考熔丝的差分EFUSE感应系统和方法
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申请号: US11427849申请日: 2006-06-30
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公开(公告)号: US20080002451A1公开(公告)日: 2008-01-03
- 发明人: Darren L. Anand , John A. Fifield , Michael R. Ouellette
- 申请人: Darren L. Anand , John A. Fifield , Michael R. Ouellette
- 申请人地址: US NY Armonk
- 专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址: US NY Armonk
- 主分类号: G11C17/00
- IPC分类号: G11C17/00
摘要:
A differential fuse sensing system includes a fuse leg configured for introducing a sense current through an electrically programmable fuse (eFUSE) to be sensed, and a differential sense amplifier having a first input node coupled to the fuse leg and a second node coupled to a reference voltage. The fuse leg further includes a current supply device controlled by a variable reference current generator configured to generate an output signal therefrom such that the voltage on the first input node of the sense amplifier is equal to the voltage on the second input node of the sense amplifier whenever the resistance value of the eFUSE is equal to the resistance value of a programmable variable resistance device included within the variable reference current generator.