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:
Sep. 09, 2008
Filed:
Mar. 08, 2006
Saeed Aghtar, Hillsborough, NJ (US);
Saeed Aghtar, Hillsborough, NJ (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A sample and hold circuit architecture samples using two capacitors that are cyclically switched between charge and discharge modes. The sample and hold circuit includes a buffer to receive an input signal to be sampled, a first sampling capacitor, a second sampling capacitor, and an amplifier. The first sampling capacitor is connected to the output of the buffer during the positive phase of a clock and across the feedback path of the amplifier during the zero phase of the clock. The second sampling capacitor is connected to the output of the buffer during the zero phase of the clock and across the feedback path of the amplifier during the positive phase of the clock. Neither the first sampling capacitor nor the second sampling capacitor is simultaneously connected to the buffer, the amplifier, or to each other.