发明授权
- 专利标题: Analog-digital converter with advanced scheduling
- 专利标题(中): 具有高级调度的模数转换器
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申请号: US11052093申请日: 2005-02-08
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公开(公告)号: US07154426B2公开(公告)日: 2006-12-26
- 发明人: Kuniyuki Tani , Atsushi Wada , Shigeto Kobayashi
- 申请人: Kuniyuki Tani , Atsushi Wada , Shigeto Kobayashi
- 申请人地址: JP Osaka
- 专利权人: Sanyo Electric Co., Ltd.
- 当前专利权人: Sanyo Electric Co., Ltd.
- 当前专利权人地址: JP Osaka
- 代理机构: McDermott Will & Emery LLP
- 优先权: JP2004-034285 20040210; JP2004-048150 20040224; JP2004-084486 20040323
- 主分类号: H03M1/12
- IPC分类号: H03M1/12
摘要:
A first amplifier circuit samples and holds an input analog signal and outputs the same to a subtracting circuit. An AD converter circuit converts the input analog signal into a digital value so as to retrieve a predetermined number of bits. A DA converter circuit converts the digital value derived from conversion by the AD converter circuit into an analog value. A subtracter circuit subtracts an output analog signal from the DA converter circuit from the analog signal input via a first switch or the first amplifier circuit. A second amplifier circuit amplifies an output analog signal from the subtracter circuit by a gain of 2 and outputs the amplified signal. An input switching circuit controls the order of inputs, i.e. the input analog signal and a reference voltage, to voltage comparison elements constituting the Ad converter circuit.
公开/授权文献
- US20050174277A1 Analog-digital converter with advanced scheduling 公开/授权日:2005-08-11