The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 06, 2007

Filed:

Jun. 28, 2004
Applicants:

Lizhong Sun, Nashua, NH (US);

Douglas F. Pastorello, Hudson, NH (US);

Richard J. Juhn, Nashua, NH (US);

Axel Thomsen, Austin, TX (US);

Inventors:

Lizhong Sun, Nashua, NH (US);

Douglas F. Pastorello, Hudson, NH (US);

Richard J. Juhn, Nashua, NH (US);

Axel Thomsen, Austin, TX (US);

Assignee:

Silicon Laboratories Inc., Austin, TX (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A phase selectable divider circuit includes a select circuit receiving a plurality of signals having a common frequency and a different phase. One of the plurality of signals, having a first phase, is selected as a selector circuit output signal. A first value corresponding to the first phase is summed with a second value corresponding to a phase offset from the first phase to generate a sum indicative thereof. That sum is used to select a second one of the signals having a second phase as the next selector circuit output signal. As successive sums are generated, a pulse train is supplied by selector circuit having a desired frequency.


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