- 专利标题: Amplifier circuit, driving circuit of display apparatus, portable telephone and portable electronic apparatus
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申请号: US10358245申请日: 2003-02-05
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公开(公告)号: US07005916B2公开(公告)日: 2006-02-28
- 发明人: Yoshihiko Nakahira , Hiroshi Tsuchi
- 申请人: Yoshihiko Nakahira , Hiroshi Tsuchi
- 申请人地址: JP Tokyo
- 专利权人: NEC Corporation
- 当前专利权人: NEC Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Young & Thompson
- 优先权: JP2002-028895 20020206; JP2002-067769 20020313
- 主分类号: H03F1/02
- IPC分类号: H03F1/02
摘要:
To obtain an amplifier circuit capable of realizing low power consumption and high-precision output. A controlling unit controls each switch of an offset correction circuit to select one capacitor associated with a voltage level of an input signal selected by an input signal selection unit, have an offset voltage of an operational amplifier generated according to the voltage level of the input signal stored by the selected capacitor, and correct an output of the operational amplifier by using the offset voltage held by the selected capacitor.
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