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.
Patent No.:
Date of Patent:
Dec. 05, 2000
Filed:
Sep. 30, 1998
Arun Jayaraman, San Diego, CA (US);
Conexant Systems, Inc., Newport Beach, CA (US);
Abstract
A prescaler circuit for a frequency synthesizer includes two circuit blocks, each having an OR gate coupled with a master-slave flip-flop. An input clock signal having a frequency FN is supplied to the flip-flop of each circuit block, and an output clock signal having a frequency FN/2 or FN/3 is generated in response. A control signal supplied to the OR gate of the second circuit block determines whether the frequency will be divided by 2 or by 3. The circuit blocks generate differential output signals, and common-mode signals are generated for supply to the OR gate inputs by summing and dividing the differential output signals with high value resistors.