发明授权
US4962413A Analog switch with minimized noise ascribable to gate capacitance
失效
具有归因于栅极电容的最小化噪声的模拟开关
- 专利标题： Analog switch with minimized noise ascribable to gate capacitance
- 专利标题（中）： 具有归因于栅极电容的最小化噪声的模拟开关
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申请号： US230234申请日： 1988-08-09
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公开(公告)号： US4962413A公开(公告)日： 1990-10-09
- 发明人: Seiichi Yamazaki , Hiroaki Inoue , Sumihiro Takashima , Hiroshisa Shishikura
- 申请人： Seiichi Yamazaki , Hiroaki Inoue , Sumihiro Takashima , Hiroshisa Shishikura
- 申请人地址： JPX Tokyo
- 专利权人： Oki Electric Industry Co, Ltd.
- 当前专利权人： Oki Electric Industry Co, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX62-202968 19870814
- 主分类号： H01L29/78
- IPC分类号： H01L29/78 ; G02F1/136 ; G02F1/1368 ; G11C27/02 ; H01L21/8234 ; H01L27/088 ; H01L27/092 ; H03K17/14 ; H03K17/16 ; H03K17/687
摘要：
An analog switch includes n-channel and p-channel MOSFETs formed in a surface of a semiconductor substrate. Each of the n-channel and p-channel MOSFETs has first, second and third diffused regions which are formed in the semiconductor surface with the width thereof substantially equal to each other. The first and third diffused regions are spaced from the second diffused region to form first and second channel regions, respectively. Each of the n-channel and p-channel MOSFETs has first and second gate electrodes which are interconnected in common to each other and placed on respective gate insulating layers overlaying the first and second channel regions, respectively. The first gate electrode has an end portion extending over part of the second diffused region by a predetermined length, while the second gate electrode has an end portion extending over another part, opposite to the earlier-mentioned part, of the second diffused region by a predetermined length. A sample and hold circuit including the analog switch is also provided.
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