发明授权
US6137356A Operational amplifier with means for changing a resistance value of an
active feedback element
失效
具有用于改变有源反馈元件的电阻值的装置的运算放大器
- 专利标题： Operational amplifier with means for changing a resistance value of an active feedback element
- 专利标题（中）： 具有用于改变有源反馈元件的电阻值的装置的运算放大器
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申请号： US253782申请日： 1999-02-22
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公开(公告)号： US6137356A公开(公告)日： 2000-10-24
- 发明人: Takamasa Sakuragi
- 申请人： Takamasa Sakuragi
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX10-040175 19980223
- 主分类号： H03F1/08
- IPC分类号： H03F1/08 ; H03G3/20
摘要：
An operational amplifier includes an operational amplification means having a phase compensation capacitor, an active element connected in series to the phase compensation capacitor and having a variable resistance value, and a differential control means for changing the resistance value of the active element on the basis of a difference voltage between inputs to the operational amplification means, whereby stable operation and high-speed operation are realized.
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