| US 7,463,098 B2 | ||
| Feedback system incorporating slow digital switching for glitch-free state changes | ||
| Rex T. Baird, Nashua, N.H. (US); Yunteng Huang, Irvine, Calif. (US); and Michael H. Perrott, Cambridge, Mass. (US) | ||
| Assigned to Silicon Laboratories Inc., Austin, Tex. (US) | ||
| Filed on Nov. 06, 2006, as Appl. No. 11/557,091. | ||
| Application 11/557091 is a continuation of application No. 10/180833, filed on Jun. 25, 2002, granted, now 7,133,485. | ||
| Claims priority of provisional application 60/300699, filed on Jun. 25, 2001. | ||
| Prior Publication US 2007/0057736 A1, Mar. 15, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H03L 7/00 (2006.01) | ||
| U.S. Cl. 331—16 [331/17; 327/156; 375/376] | 21 Claims |
| 1. An electronic feedback system comprising:
a first feedback loop for controlling a first operating parameter of the feedback system; and
a second feedback loop including a plurality of digital control signals to influence the feedback system in a manner which,
absent the first feedback loop, would result in a change to the controlled first operating parameter when one or more of the
digital control signals change value;
wherein the second feedback loop is configured to affect a larger controlled range of the controlled first operating parameter
than the first feedback loop is configured to affect; and
wherein the second feedback loop is arranged to influence the feedback system slowly enough, relative to the first feedback
loop, to allow the first feedback loop to maintain the controlled first operating parameter without significant perturbation.
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