Hitt Chwang & Gaines
Stabilizing mechanism for sigma-delta modulator
The invention relates to a technique called "Internal Linear Feedback (ILF)" for the stabilization of high-order sigma-delta modulators. The ILF technique involves an overload detector and a selector. Once "overloaded" is detected by the overload detector, the selector is activated to make the modulator entering the ILF mode, in which additional internal linear feedback paths are employed to stabilize the modulator. Otherwise, the modulator operates in normal mode as a general high-order modulator.
National Science Council
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Kuan-Dar Wen-Chyi Jhy-Rong Tai-Haur Jhy-Woei
Chen Wang Chen Kuo Yeh