发明授权
US07298307B2 ΣΔ-analog-to-digital modulator and digital filter for improved noise immunity
失效
SigmaDelta模数转换器和数字滤波器，提高抗噪声能力
- 专利标题： ΣΔ-analog-to-digital modulator and digital filter for improved noise immunity
- 专利标题（中）： SigmaDelta模数转换器和数字滤波器，提高抗噪声能力
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申请号： US11389426申请日： 2006-03-23
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公开(公告)号： US07298307B2公开(公告)日： 2007-11-20
- 发明人: Makoto Takeuchi , Naoki Maeda
- 申请人： Makoto Takeuchi , Naoki Maeda
- 申请人地址： JP Tokyo
- 专利权人： Yokogawa Electric Corporation
- 当前专利权人： Yokogawa Electric Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Edwards Angell Palmer & Dodge LLP
- 代理商 John J. Penny, Jr.
- 优先权： JP2005-087454 20050325
- 主分类号： H03M3/00
- IPC分类号： H03M3/00
摘要：
A ΣΔ analog-to-digital converter has a ΣΔ modulation section which executes ΣΔ modulation, and a digital filter which filters a digital signal output from the ΣΔ modulation section. The digital filter has gain properties that one of dips of a gain of the digital filter corresponds to a noise frequency which is, for example, the commercial frequency 60 Hz. Especially, the lowest frequency of the dips corresponds to the noise frequency.
公开/授权文献
- US20060214829A1 Sigma delta analog-to-digital converter 公开/授权日：2006-09-28
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