发明授权
- 专利标题： Modulator providing only quantization error component to delta sigma modulator
- 专利标题（中）： 调制器只提供量化误差分量到ΔΣ调制器
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申请号： US10715456申请日： 2003-11-19
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公开(公告)号： US07009539B2公开(公告)日： 2006-03-07
- 发明人: Takashi Okuda , Toshio Kumamoto , Yasuo Morimoto
- 申请人： Takashi Okuda , Toshio Kumamoto , Yasuo Morimoto
- 申请人地址： JP Tokyo
- 专利权人： Renesas Technology Corp.
- 当前专利权人： Renesas Technology Corp.
- 当前专利权人地址： JP Tokyo
- 代理机构： Buchanan Ingersoll PC
- 优先权： JP2003-065444 20030311
- 主分类号： H03M3/00
- IPC分类号： H03M3/00
摘要：
A ΔΣ modulator modulates only an error component separated by a component separating portion. Therefore, even if the number of order of the ΔΣ modulator increases, an amplitude of an output of an integrator in the final stage does not excessively increase, and the stability of the modulator can be achieved. Since the signal component separated by the component separating portion does not pass through the ΔΣ modulator, an intensity of an input signal can be maintained as it is, and the modulator can have high precision.
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