发明授权
US07830289B2 Sigma-delta modulator for PWM applications with minimum dynamical control and dithering
有权
用于PWM应用的Σ-Δ调制器，具有最小的动态控制和抖动
- 专利标题： Sigma-delta modulator for PWM applications with minimum dynamical control and dithering
- 专利标题（中）： 用于PWM应用的Σ-Δ调制器，具有最小的动态控制和抖动
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申请号： US12247330申请日： 2008-10-08
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公开(公告)号： US07830289B2公开(公告)日： 2010-11-09
- 发明人: Simone Ferri
- 申请人： Simone Ferri
- 申请人地址： IT Agrate Brianza (MI)
- 专利权人： STMicroelectronics S.R.L.
- 当前专利权人： STMicroelectronics S.R.L.
- 当前专利权人地址： IT Agrate Brianza (MI)
- 代理机构： Allen, Dyer, Doppelt, Milbrath & Gilchrist, P. A.
- 代理商 Lisa K. Jorgenson
- 优先权： ITVA2007A0076 20071010
- 主分类号： H03M3/00
- IPC分类号： H03M3/00
摘要：
The circuit includes, upstream from a PWM quantizer, that is between the output of the sigma-delta modulator and the input of the PWM or PWM-like quantizer, a second or ancillary sigma-delta stage of any order and architecture, with the function of controlling the minimum dynamic of the sigma-delta modulator. This second sigma-delta stage is input with the output signal of the sigma-delta modulator summed to a signal corresponding to the difference between the input signal and the output signal of the second sigma-delta stage, delayed by a delay block.
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