发明授权
- 专利标题: High speed current limiting sense amplifier
- 专利标题(中): 高速限流读出放大器
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申请号: US206012申请日: 1988-06-13
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公开(公告)号: US4845442A公开(公告)日: 1989-07-04
- 发明人: Jay R. Chapin , Thomas M. Luich
- 申请人: Jay R. Chapin , Thomas M. Luich
- 申请人地址: CA Santa Clara
- 专利权人: National Semiconductor Corp.
- 当前专利权人: National Semiconductor Corp.
- 当前专利权人地址: CA Santa Clara
- 主分类号: H03K17/0412
- IPC分类号: H03K17/0412 ; H03K19/088
摘要:
According to the teachings of this invention, a novel sense amplifier is provided which includes a current steering transistor having its emitter connected to the collector of a current mirror transistor, its collector connected to the base of an output transistor, and its base driven by the input signal. With a low input signal, the emitter of the current steering transistor is pulled low, thereby pulling the base of the output transistor low. Conversely, when the input signal is high, and the current steering transistor ceases to operate in the active saturation mode and begins to operate in the inverse active saturation mode, thereby providing current from its base to its collector in order to turn on the output transistor.
公开/授权文献
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