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:
Jul. 08, 1997
Filed:
Nov. 17, 1995
Janos Kovacs, Andover, MA (US);
Ronald Kroesen, Harvard, MA (US);
Kevin McCall, Leominster, MA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A dynamic phase selector phase locked loop circuit includes: an A/D converter for receiving an input to be sampled; a phase detection circuit for determining the phase error between the input signal and a clock signal; a clock circuit, responsive to the phase detection circuit, for providing the clock signal to the A/D converter for timing the sampling of the input signal; the clock circuit including a delay circuit having a number of delay taps; and a phase selector circuit, responsive to the phase detection circuit, for initially gating the clock signals to the A/D converter from the clock circuit, and enabling one of the delay taps to dynamically adjust the phase of the clock signal and reduce the initial phase error.