发明授权
- 专利标题： Integrator and oversampling A/D converter having the same
- 专利标题（中）： 具有相同的积分器和过采样A / D转换器
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申请号： US13410964申请日： 2012-03-02
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公开(公告)号： US08674864B2公开(公告)日： 2014-03-18
- 发明人: Shiro Dosho
- 申请人： Shiro Dosho
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： McDermott Will & Emery LLP
- 优先权： JP2009-225143 20090929
- 主分类号： H03M3/00
- IPC分类号： H03M3/00
摘要：
A high order integrator is configured using an operational amplifier, a first filter connected between an input terminal of the integrator and an inverted input terminal of the operational amplifier, and a second filter connected between the inverted input terminal and output terminal of the operational amplifier. The first filter includes n serially-connected first resistance elements, n−1 first capacitance elements each connected between each interconnecting node of the first resistance elements and the ground, and n−1 second resistance elements each connected between each interconnecting node of the first resistance elements and the ground. The second filter includes n serially-connected second capacitance elements, n−1 third resistance elements each connected between each interconnecting node of the second capacitance elements and the ground, and n−1 third capacitance elements each connected between each interconnecting node of the second capacitance elements and the ground.