Invention Grant
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
- Patent Title: Sigma-delta modulator for PWM applications with minimum dynamical control and dithering
- Patent Title (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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Application No.: US12247330Application Date: 2008-10-08
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Publication No.: US07830289B2Publication Date: 2010-11-09
- Inventor: Simone Ferri
- Applicant: Simone Ferri
- Applicant Address: IT Agrate Brianza (MI)
- Assignee: STMicroelectronics S.R.L.
- Current Assignee: STMicroelectronics S.R.L.
- Current Assignee Address: IT Agrate Brianza (MI)
- Agency: Allen, Dyer, Doppelt, Milbrath & Gilchrist, P. A.
- Agent Lisa K. Jorgenson
- Priority: ITVA2007A0076 20071010
- Main IPC: H03M3/00
- IPC: H03M3/00
Abstract:
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.
Public/Granted literature
- US20090096649A1 SIGMA-DELTA MODULATOR FOR PWM APPLICATIONS WITH MINIMUM DYNAMICAL CONTROL AND DITHERING Public/Granted day:2009-04-16
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