发明授权
- 专利标题： Voltage comparator and A/D converter
- 专利标题（中）： 电压比较器和A / D转换器
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申请号： US912813申请日： 1997-08-19
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公开(公告)号： US5936434A公开(公告)日： 1999-08-10
- 发明人: Toshio Kumamoto , Masao Ito , Takahiro Miki , Takashi Okuda
- 申请人： Toshio Kumamoto , Masao Ito , Takahiro Miki , Takashi Okuda
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Kabushiki Kaisha
- 当前专利权人： Mitsubishi Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX9-057588 19970312
- 主分类号： H03M1/34
- IPC分类号： H03M1/34 ; H03F3/45 ; H03K5/08 ; H03K5/24 ; H03K5/153
摘要：
An object is to obtain a voltage comparator capable of high-accuracy voltage comparison. An input voltage (VIN) and a reference voltage (VREF) are connected to one electrode of a capacitor (C1) through switches (S1) and (S2), respectively. The other electrode of the capacitor (C1) is connected to the input portion of an inverter (INV1). The output portion of the inverter (INV1) is connected to the input portion of an inverter (INV3) and is also fed back to the input through a switch (S3). An inverter (INV11) is further connected in parallel with the inverter (INV1), wherein the input/output characteristics of the inverters (INV1, INV3 and INV11) are set equal.
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