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:
May. 07, 2002
Filed:
Nov. 27, 2000
Christopher Michalski, High Point, NC (US);
David Graham Nairn, Greensboro, NC (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
High-speed sampler methods and structures are provided to enhance the correlation between an input signal S and a corresponding sampler output voltage V . An input buffer is enabled during sampling time periods and disabled during holding time periods. In the sampling time periods, a sampling capacitor C is directly charged through the input buffer and the capacitor's bottom plate to a charge that corresponds to the input signal S . In the holding time periods, the disabled input buffer is isolated from the sampling capacitor C and a common-mode signal S is directly coupled to the capacitor's bottom plate to provide the output voltage V at the capacitor's top plate. Preferably, an output capacitor C is coupled to the sampling capacitor C and charge from the sampling capacitor C is transferred to the output capacitor C .